oca questions

8/7/2019 OCA Questions

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#1 (1z0001q338)What can occur when multiple users try to access the same schema object (fill in the

blank):

Please type in your answer in the form :

Your answer is:

Correct answer is: deadlock

Explanation : According to the documentation available at the Oracle web

site:

A deadlock can occur when two or more users try to accessthe same schema object. For example, two users updating the

same table might wait if each tries to update a row currentlylocked by the other. Because each user is waiting for

resources held by another user, neither can continue until

Oracle breaks the deadlock by signaling an error to the last

participating transaction.

#2 (1z0001q205)To ensure proper data conversion between databases with different character sets, you

must ensure that:

A) ASCII characters are capitalized.

B) INT data consists of non-negative numbers.

C) CHAR data consists of well-formed strings.

D) CHAR data consists of at least a nil string.

E) None of the choices.

Your answer is:Correct answer is: C


site:

To ensure proper data conversion between databases withdifferent character sets, you must ensure that CHAR data

consists of well-formed strings.
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#3 (1z0001q292)

What statement can you use to configure an account through which you can log in to the

database and establish the means by which Oracle permits access by the user (fill in theblank):


Your answer is:

Correct answer is: ACERSTU


site:

Use the CREATE USER statement to create and configure adatabase user, or an account through which you can log in to

the database and establish the means by which Oracle

permits access by the user.

#4 (1z0001q291)What statement can you use to create tablespaces that contain schema objects only for the

duration of a session (fill in the blank):


Your answer is:

Correct answer is: ABCELMOPRSTY

Explanation : According to the documentation available at the Oracle website:You can use the CREATE TEMPORARY TABLESPACE

statement to create tablespaces that contain schema objects

only for the duration of a session.

#5 (1z0001q213)For each DATE value in an Oracle database, which of the following information is stored

(choose all that apply):

A) second

B) century

C) hour

D) year

E) date


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F) month

G) minute

Your answer is:

Correct answer is: ABCDEFGExplanation : According to the documentation available at the Oracle web

site:

The DATE datatype stores date and time information.

Although date and time information can be represented inboth character and number datatypes, the DATE datatype has

special associated properties. For each DATE value, Oracle

stores the following information: century, year, month, date,hour, minute, and second.

#6 (1z0001q287)To enable a UNIQUE constraint ______

A) you must have the privileges necessary to create a rollback segment on the table.

B) you must have the privileges necessary to create a schema on the table.

C) you must have the privileges necessary to create an index on the table.

D) This is hard to determine.

Your answer is:Correct answer is: C


site:

To enable a UNIQUE or PRIMARY KEY constraint, you

must have the privileges necessary to create an index on thetable. You need these privileges because Oracle creates an

index on the columns of the unique or primary key in the

schema containing the table.

#7 (1z0001q209)Which of the following correctly describe the LONG columns (choose all that apply):

A) You can use them to store long text strings.

B) They have many of the characteristics of VARCHAR2 columns.

C) They store variable-length character strings containing up to 2 gigabytes


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D) None of the choices.

Your answer is:

Correct answer is: ABC

Explanation : According to the documentation available at the Oracle website:

LONG columns store variable-length character strings

containing up to 2 gigabytes, or 231-1 bytes. LONG columnshave many of the characteristics of VARCHAR2 columns.

You can use LONG columns to store long text strings. The

length of LONG values may be limited by the memory

available on your computer.

#8 (1z0001q212)

Which of the following are the valid datetime datatypes in Oracle (choose all that apply):

A) TIMESTAMP WITH LOCAL TIME ZONE

B) TIMESTAMP

C) TIMESTAMP WITH TIME ZONE

D) DATE

Your answer is:

Correct answer is: ABCD


The datetime datatypes are DATE, TIMESTAMP,

TIMESTAMP WITH TIME ZONE and TIMESTAMPWITH LOCAL TIME ZONE. Values of datetime datatypes

are sometimes called "datetimes". The interval datatypes are

INTERVAL YEAR TO MONTH and INTERVAL DAY TO

SECOND. Values of interval datatypes are sometimes called"intervals".

#9 (1z0001q277)Which of the following are the restrictions of creating bitmap indexes (choose all that

apply):

A) You cannot specify BITMAP for a domain index.

B) You cannot specify both UNIQUE and BITMAP.


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C) You cannot specify BITMAP when creating a local index.

D) You cannot specify BITMAP when creating a global partitioned index.

Your answer is:

Correct answer is: ABDExplanation : According to the documentation available at the

Oracle web site:

You cannot specify BITMAP when creating a global

partitioned index.

You cannot create a bitmapped secondary index on an

index-organized table unless the index-organized

table has a mapping table associated with it.

You cannot specify both UNIQUE and BITMAP.

You cannot specify BITMAP for a domain index.

#10 (1z0001q330)

In PL/SQL, the EXIT-WHEN statement lets you:

A) this statement is not valid

B) complete a loop if further processing is desirable.

C) This is hard to determine.

D) complete a loop if further processing is impossible.

Your answer is: D

Correct answer is: D


site:

The EXIT-WHEN statement lets you complete a loop iffurther processing is impossible or undesirable. When the

EXIT statement is encountered, the condition in the WHEN

clause is evaluated. If the condition is true, the loop

completes and control passes to the next statement.

#11 (1z0001q201)nvarchar2 has an upper limit of how many bytes (fill in the blank):


Your answer is:


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Correct answer is: 4000


Variable-length character string having maximum length size

characters or bytes, depending on the choice of national

character set. Maximum size is determined by the number ofbytes required to store each character, with an upper limit of

4000 bytes. You must specify size for NVARCHAR2.

#12 (1z0001q337)What is used by Oracle to control concurrent access to data?

A) memory holes

B) Net 8

C) transaction manager

D) locks

E) Session Manager

Your answer is: D



Oracle uses locks to control concurrent access to data. A lock

gives you temporary ownership of a database resource suchas a table or row of data. Thus, data cannot be changed by

other users until you finish with it. You need never explicitly

lock a resource because default locking mechanisms protectOracle data and structures. However, you can request data

locks on tables or rows when it is to your advantage to

override default locking. You can choose from several modes

of locking such as row share and exclusive.

#13 (1z0001q203)The CHAR datatype specifies a variable-length character string.

A) This is hard to determine.

B) True

C) False


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Your answer is:

Correct answer is: C


The CHAR datatype specifies a fixed-length character string.

Oracle subsequently ensures that all values stored in thatcolumn have the length specified by size. If you insert a

value that is shorter than the column length, Oracle blank-

pads the value to column length. If you try to insert a value

that is too long for the column, Oracle returns an error.

#14 (1z0001q206)

You cannot insert a CHAR value into an NCHAR column, but you can insert an NCHARvalue into a CHAR column.

A) True

B) False



Your answer is:

Correct answer is: BExplanation : According to the documentation available at the Oracle web

site:

If you insert a value that is shorter than the column length,Oracle blank-pads the value to column length. You cannot

insert a CHAR value into an NCHAR column, nor can you

insert an NCHAR value into a CHAR column.

#15 (1z0001q339)What PL/SQL statements ensure that all database changes brought about by SQL

operations are either made permanent or undone at the same time (choose all that apply):

A) COMMIT

B) CONFIRM

C) ROLLBACK

D) CANCEL


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Your answer is:

Correct answer is: AC


The COMMIT and ROLLBACK statements ensure that all

database changes brought about by SQL operations are eithermade permanent or undone at the same time. All the SQL

statements executed since the last commit or rollback make

up the current transaction. The SAVEPOINT statement

names and marks the current point in the processing of atransaction.

#16 (1z0001q214)The default date format for an Oracle date literal is specified by what initialization

parameter (fill in the blank):


Your answer is:

Correct answer is: ADEFLMNORST_


The default date format for an Oracle date literal is specifiedby the initialization parameter NLS_DATE_FORMAT. Thisexample date format includes a two-digit number for the day

of the month, an abbreviation of the month name, the last two

digits of the year, and a 24-hour time designation.

#17 (1z0001q331)PL/SQL has which types of subprograms (choose all that apply):

A) procedures

B) links

C) packages

D) pointers

E) functions

F) This is hard to determine.


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Your answer is:

Correct answer is: AE


PL/SQL has two types of subprograms called procedures andfunctions, which can take parameters and be invoked

(called).

#18 (1z0001q211)You cannot reference LONG columns in which of the following SQL statements (choose

all that apply):

A) SELECT lists

B) SET clauses of UPDATE statementsC) VALUES clauses of INSERT statements



Your answer is:

Correct answer is: E


site:

You can reference LONG columns in SQL statements inthese places:

SELECT lists

SET clauses of UPDATE statements

VALUES clauses of INSERT statements

#19 (1z0001q290)What statement do you use to define a logical table based on one or more tables (fill in

the blank):


Your answer is:

Correct answer is: ACEIRTVW


site:


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Use the CREATE VIEW statement to define a view, which is

a logical table based on one or more tables or views. A view

contains no data itself. The tables upon which a view is basedare called base tables.

#20 (1z0001q210)

Which of the following correctly describe the restrictions on the use of LONG columns(choose all that apply):

A) You cannot create an object type with a LONG attribute.

B) A table can contain only one LONG column.

C) LONG columns cannot be indexed.

D) LONG columns cannot appear in WHERE clauses.

Your answer is: B



The use of LONG values is subject to some restrictions:

A table can contain only one LONG column.

You cannot create an object type with a LONG

attribute.

LONG columns cannot appear in WHERE clauses or

in integrity constraints (except that they can appear inNULL and NOT NULL constraints).

LONG columns cannot be indexed.

A stored function cannot return a LONG value.

You can declare a variable or argument of a PL/SQL

program unit using the LONG datatype. However,

you cannot then call the program unit from SQL.

Within a single SQL statement, all LONG columns,

updated tables, and locked tables must be located on

the same database.

LONG and LONG RAW columns cannot be used indistributed SQL statements and cannot be replicated.

If a table has both LONG and LOB columns, you

cannot bind more than 4000 bytes of data to both theLONG and LOB columns in the same SQL statement.

However, you can bind more than 4000 bytes of data

to either the LONG or the LOB column.


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A table with LONG columns cannot be stored in a

tablespace with automatic segment-space

management.

#1 (1z0001q218)In addition to the LONG RAW datatype, what datatype stores data that is not to be

interpreted (fill in the blank):


Your answer is:

Correct answer is: ARW


site:

The RAW and LONG RAW datatypes store data that is notto be interpreted (not explicitly converted when moving databetween different systems) by Oracle. These datatypes are

intended for binary data or byte strings. For example, you

can use LONG RAW to store graphics, sound, documents, orarrays of binary data, for which the interpretation is

dependent on the use.

#2 (1z0001q225)

Text literals have properties of which of the following datatypes (choose all that apply):

A) CHAR

B) CLOB

C) VARCHAR2

D) Float

Your answer is:



site:Text literals have properties of both the CHAR and

VARCHAR2 datatypes:

Within expressions and conditions, Oracle treats textliterals as though they have the datatype CHAR by

comparing them using blank-padded comparison


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semantics.

A text literal can have a maximum length of 4000

bytes.

#3 (1z0001q222)

Each row in the database has an address. Such address is represented by what datatype(fill in the blank):


Your answer is:

Correct answer is: DIORW


Each row in the database has an address. You can examine arow's address by querying the pseudocolumn ROWID.

Values of this pseudocolumn are hexadecimal strings

representing the address of each row. These strings have thedatatype ROWID.

#4 (1z0001q228)The total length of a date format model cannot exceed how many characters (fill in the

blank):


Your answer is:



site:You can use date format models:

In the TO_DATE function to translate a charactervalue that is in a format other than the default dateformat into a DATE value

In the TO_CHAR function to translate a DATE value

that is in a format other than the default date format

into a string (for example, to print the date from anapplication)

The total length of a date format model cannot exceed 22


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characters.

#5 (1z0001q231)

A sequence generates values that are often used for (choose all that apply):

A) primary keys

B) sales figures

C) foreign keys

D) unique keys

Your answer is:

Correct answer is: AD


site:A sequence is a schema object that can generate uniquesequential values. These values are often used for primary

and unique keys.

#6 (1z0001q221)In Oracle, BLOBs have full transactional support.

A) True

B) False



Your answer is:

Correct answer is: A


BLOBs have full transactional support. Changes made

through SQL, the DBMS_LOB package, or the OCIparticipate fully in the transaction. BLOB valuemanipulations can be committed and rolled back. However,

you cannot save a BLOB locator in a PL/SQL or OCI

variable in one transaction and then use it in anothertransaction or session.


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#7 (1z0001q227)

What is known as a character literal that describes the format of DATE or NUMBER data

stored in a character string?

A) representation model

B) descriptive header

C) numeric tagger

D) format model

Your answer is:



site:A format model is a character literal that describes the format

of DATE or NUMBER data stored in a character string.When you convert a character string into a date or number, aformat model tells Oracle how to interpret the string. In SQL

statements, you can use a format model as an argument of the

TO_CHAR and TO_DATE functions:

To specify the format for Oracle to use to return avalue from the database

To specify the format for a value you have specified

for Oracle to store in the database

#8 (1z0001q232)You cannot use CURRVAL in which of the following SQL statements (choose all that

apply):

A) The SELECT list of a subquery in an INSERT statement

B) This is hard to determine.

C) The SELECT list of a SELECT statement that is not contained in a subquery

D) The SET clause of an UPDATE statement

E) The VALUES clause of an INSERT statement

F) None of the choices.

Your answer is:

Correct answer is: F



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site:

You can use CURRVAL and NEXTVAL in:

The SELECT list of a SELECT statement that is notcontained in a subquery, materialized view, or view

The SELECT list of a subquery in an INSERTstatement

The VALUES clause of an INSERT statement

The SET clause of an UPDATE statement

#9 (1z0001q220)What datatype enables access to binary file LOBs that are stored in file systems outside

the Oracle database (fill in the blank):


Your answer is:

Correct answer is: BEFIL


The BFILE datatype enables access to binary file LOBs that

are stored in file systems outside the Oracle database. A

BFILE column or attribute stores a BFILE locator, whichserves as a pointer to a binary file on the server's file system.

The locator maintains the directory alias and the filename.

#10 (1z0001q234)

It is a good practice to use ROWID as a table's primary key.

A) False


C) True

Your answer is:



site:

You should not use ROWID as a table's primary key. If youdelete and reinsert a row with the Import and Export utilities,

for example, its rowid may change. If you delete a row,

Oracle may reassign its rowid to a new row inserted later.


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#11 (1z0001q223)

Oracle uses what datatype to store the addresses of index-organized and foreign tables

(fill in the blank):


Your answer is:

Correct answer is: DIORUW


Oracle uses "universal rowids" (urowids) to store the

addresses of index-organized and foreign tables. Index-organized tables have logical urowids and foreign tables have

foreign urowids. Both types of urowid are stored in theROWID pseudocolumn (as are the physical rowids of heap-organized tables).

#12 (1z0001q229)ALL scalar functions in Oracle return null when given a null argument.

A) False


C) True

Your answer is:



All scalar functions (except REPLACE, NVL, and

CONCAT) return null when given a null argument. You can

use the NVL function to return a value when a null occurs.For example, the expression NVL(COMM,0) returns 0 if

COMM is null or the value of COMM if it is not null.

#13 (1z0001q224)A text literal must be enclosed in:

A) semi-colons.


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B) colons.

C) single quotation marks.

D) double quotation marks.

Your answer is:



site:

A text literal must be enclosed in single quotation marks.This reference uses the terms text literal and character literal

interchangeably.

#14 (1z0001q230)

What is known as a schema object that can generate unique sequential values (fill in theblank):


Your answer is:

Correct answer is: sequence


site:

A sequence is a schema object that can generate unique

sequential values. These values are often used for primaryand unique keys.

#15 (1z0001q233)

Within a single SQL statement, Oracle will increment the sequence only twice for eachrow.

A) False


C) True

Your answer is:



site:Within a single SQL statement, Oracle will increment the

sequence only once for each row. If a statement contains


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more than one reference to NEXTVAL for a sequence,

Oracle increments the sequence once and returns the same

value for all occurrences of NEXTVAL. If a statementcontains references to both CURRVAL and NEXTVAL,

Oracle increments the sequence and returns the same value

for both CURRVAL and NEXTVAL regardless of theirorder within the statement.

#16 (1z0001q215)Oracle DATE columns always contain the date but not the time fields.

A) False


C) True


Your answer is:



Oracle DATE columns always contain both the date and time

fields. If your queries use a date format without a timeportion, you must ensure that the time fields in the DATE

column are set to zero (that is, midnight). Otherwise, Oracle

may not return the query results you expect.

#17 (1z0001q226)An interval literal specifies:

A) a period of time.

B) a numerical difference.

C) a descriptive number.

D) a floating point number.

Your answer is:



An interval literal specifies a period of time. You can specify

these differences in terms of years and months, or in terms of

days, hours, minutes, and seconds. Oracle supports two types


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of interval literals, YEAR TO MONTH and DAY TO

SECOND. Each type contains a leading field and may

contain a trailing field. The leading field defines the basicunit of date or time being measured. The trailing field defines

the smallest increment of the basic unit being considered.

#18 (1z0001q219)

What datatype is an ideal substitute to LONG RAW (fill in the blank):


Your answer is:

Correct answer is: BLO


site:Oracle Corporation strongly recommends that you convertLONG RAW columns to binary LOB (BLOB) columns.

LOB columns are subject to far fewer restrictions than

LONG columns.

#19 (1z0001q217)

What datatype stores the year, month, and day of the DATE datatype (fill in the blank):


Your answer is:

Correct answer is: AEIMPST


The TIMESTAMP datatype is an extension of the DATE

datatype. It stores the year, month, and day of the DATEdatatype, plus hour, minute, and second values.

#20 (1z0001q216)What function returns the current system date and time (fill in the blank):


Your answer is:

Correct answer is: ADESTY


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site:

The date function SYSDATE returns the current system dateand time. The function CURRENT_DATE returns the

current session date.

#1 (1z0001q242)You may use two consecutive minus signs in arithmetic expressions to indicate the

subtraction of a negative value.


B) True

C) False

Your answer is:



site:

Do not use two consecutive minus signs (--) in arithmeticexpressions to indicate double negation or the subtraction of

a negative value. The characters -- are used to begin

comments within SQL statements. You should separate

consecutive minus signs with a space or a parenthesis.

#2 (1z0001q247)In Oracle, the result of comparison conditions can be (choose all that apply):

A) TRUE

B) UNKNOWN

C) ERROR

D) NULL

E) FALSE

Your answer is:

Correct answer is: ABE


site:

Comparison conditions compare one expression with

another. The result of such a comparison can be TRUE,


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FALSE, or UNKNOWN.

#3 (1z0001q239)

You create a database link in Oracle with what statement (fill in the blank):


Your answer is:

Correct answer is: create database link


site:

You create a database link with the statement CREATE

DATABASE LINK. The statement lets you specify thisinformation about the database link:

The name of the database link

The database connect string to access the remote

database

The username and password to connect to the remote

database

#4 (1z0001q245)

In general, Oracle accepts all forms of expressions in all parts of all SQL statements.

A) True

B) False


Your answer is:

Correct answer is: B


site:

Oracle does not accept all forms of expressions in all parts ofall SQL statements. You must use appropriate expression

notation whenever expr appears in conditions, SQL

functions, or SQL statements in other parts of this reference.


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#5 (1z0001q253)

Analytic functions compute an aggregate value based on a group of rows and return a

single row for each group.

A) False


C) True

Your answer is:



site:Analytic functions compute an aggregate value based on a

group of rows. They differ from aggregate functions in that

they return multiple rows for each group. The group of rowsis called a window and is defined by the analytic clause. Foreach row, a "sliding" window of rows is defined. The

window determines the range of rows used to perform the

calculations for the "current row". Window sizes can bebased on either a physical number of rows or a logical

interval such as time.

#6 (1z0001q249)

You can include the actual characters "%" or "_" in a LIKE pattern by using what clause



Your answer is:

Correct answer is: ACEPS


site:

You can include the actual characters "%" or "_" in thepattern by using the ESCAPE clause, which identifies the

escape character. If the escape character appears in thepattern before the character "%" or "_" then Oracle interpretsthis character literally in the pattern, rather than as a special

pattern matching character.

#7 (1z0001q246)

You can use a condition in the WHERE clause of which of the following statements



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A) DELETE

B) SELECT

C) UPDATE


Your answer is:



site:You can use a condition in the WHERE clause of these

statements:

DELETE

SELECT

UPDATE

#8 (1z0001q243)

The result of concatenating two character strings is always a VARCHAR2 character

string.

A) True


C) False

Your answer is:



site:The result of concatenating two character strings is another

character string. If both character strings are of datatype

CHAR, the result has datatype CHAR and is limited to 2000

characters. If either string is of datatype VARCHAR2, theresult has datatype VARCHAR2 and is limited to 4000

characters. If either argument is a CLOB, the result is a

temporary CLOB. Trailing blanks in character strings arepreserved by concatenation, regardless of the datatypes of the

string or CLOB.


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#9 (1z0001q248)

What type of conditions specify a test involving pattern matching (fill in the blank):


Your answer is:

Correct answer is: EIKL


The LIKE conditions specify a test involving pattern

matching. Whereas the equality operator (=) exactly matches

one character value to another, the LIKE conditions match aportion of one character value to another by searching the

first value for the pattern specified by the second. LIKE

calculates strings using characters as defined by the input

character set. LIKEC uses unicode complete characters.LIKE2 uses UCS2 codepoints. LIKE4 uses USC4

codepoints.

#10 (1z0001q237)You use comments in a SQL statement to pass hints to the Oracle optimizer.

A) False


C) True


Your answer is:



You can use comments in a SQL statement to pass

instructions, or hints, to the Oracle optimizer. The optimizeruses these hints as suggestions for choosing an execution

plan for the statement.

#11 (1z0001q251)

Single-row functions can appear in which of the following (choose all that apply):

A) WHERE clauses


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B) START WITH and CONNECT BY clauses

C) select lists

D) HAVING clauses

Your answer is:



site:

Single-row functions return a single result row for every rowof a queried table or view. These functions can appear in

select lists, WHERE clauses, START WITH and CONNECT

BY clauses, and HAVING clauses.

#12 (1z0001q236)A comment can appear between which of the following in a SQL statement (choose allthat apply):

A) punctuation marks


C) parameters

D) keywords

Your answer is:Correct answer is: ACD


A comment can appear between any keywords, parameters,

or punctuation marks in a statement. You can include acomment in a statement using either of these means:

Begin the comment with a slash and an asterisk (/*).

Proceed with the text of the comment. This text can

span multiple lines. End the comment with an asterisk

and a slash (*/). The opening and terminatingcharacters need not be separated from the text by a

space or a line break.

Begin the comment with -- (two hyphens). Proceedwith the text of the comment. This text cannot extend

to a new line. End the comment with a line break.


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#13 (1z0001q254)

In Oracle, a query nested within another SQL statement is called a (fill in the blank):


Your answer is:

Correct answer is: subquery


site:

A query is an operation that retrieves data from one or more

tables or views. In this reference, a top-level SELECTstatement is called a query, and a query nested within another

SQL statement is called a subquery.

#14 (1z0001q244)

Oracle treats zero-length character strings as nulls.

A) False

B) True


Your answer is:


site:

Although Oracle treats zero-length character strings as nulls,concatenating a zero-length character string with another

operand always results in the other operand, so null can result

only from the concatenation of two null strings. However,this may not continue to be true in future versions of Oracle.

To concatenate an expression that might be null, use the

NVL function to explicitly convert the expression to a zero-

length string.

#15 (1z0001q241)

You can use ____________ in a SQL expression to override operator precedence.

A) colons

B) parentheses


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C) commas

D) semi-colons

Your answer is:


site:

You can use parentheses in an expression to override

operator precedence. Oracle evaluates expressions insideparentheses before evaluating those outside.

#16 (1z0001q252)

In Oracle, all aggregate functions except which of the following ignore nulls (choose all

that apply):

A) COUNT(*)

B) SUM

C) GROUPING

D) AVERAGE

Your answer is:


Explanation : According to the documentation available at the Oracle website:All aggregate functions except COUNT(*) and GROUPING

ignore nulls. You can use the NVL function in the argument

to an aggregate function to substitute a value for a null.

COUNT never returns null, but returns either a number orzero. For all the remaining aggregate functions, if the data set

contains no rows, or contains only rows with nulls as

arguments to the aggregate function, then the function returnsnull.

#17 (1z0001q235)

Comments within SQL statements:

A) make your application less secure

B) do not affect the statement execution


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C) make your application faster to run


Your answer is:


site:

Comments within SQL statements do not affect the statement

execution, but they may make your application easier for youto read and maintain. You may want to include a comment in

a statement that describes the statement's purpose within your

application.

#18 (1z0001q240)

Database link names (choose all that apply):

A) can contain the "at" sign

B) can contain periods

C) can be as long as 128 bytes


Your answer is:

Correct answer is: ABCExplanation : According to the documentation available at the Oracle web

site:

When you create a database link, you must specify its name.

Database link names are different from names of other types

of objects. They can be as long as 128 bytes and can containperiods (.) and the "at" sign (@).

#19 (1z0001q250)

If you call a SQL function with an argument of a datatype other than the datatype

expected by that SQL function, Oracle consults with you before converting the argumentto the expected datatype.

A) False

B) True



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Your answer is:



site:

If you call a SQL function with an argument of a datatype

other than the datatype expected by the SQL function, Oracleimplicitly converts the argument to the expected datatype

before performing the SQL function. If you call a SQLfunction with a null argument, the SQL function

automatically returns null. The only SQL functions that do

not necessarily follow this behavior are CONCAT, NVL, and

REPLACE.

#20 (1z0001q238)

Which of the following can be partitioned (choose all that apply):

A) Indexes

B) Hints

C) Tables

D) Bitmaps

Your answer is:



site:

Tables and indexes can be partitioned. When partitioned,these schema objects consist of a number of parts called

partitions, all of which have the same logical attributes. For

example, all partitions in a table share the same column and

constraint definitions, and all partitions in an index share thesame index columns.

#1 (1z0001q257)

During a hierarchical query, Oracle always processes the WHERE clause before the

CONNECT BY clause.

A) True


C) False


30/65

Your answer is:



site:

Oracle processes the WHERE clause either before or after

the CONNECT BY clause depending on whether theWHERE clause contains any join predicates (as described in

the preceding bullet list).

#2 (1z0001q269)What type of joins extends the result of a simple join?

A) left join

B) right join

C) outer join

D) equil join

E) simple join

Your answer is:



site:

An outer join extends the result of a simple join. An outer

join returns all rows that satisfy the join condition and alsoreturns some or all of those rows from one table for which no

rows from the other satisfy the join condition.

#3 (1z0001q270)

To write a query that performs an outer join of tables A and B and returns all rows fromB, you need a:

A) left outer join

B) inner join

C) equil join

D) right outer join

Your answer is:




31/65

site:

To write a query that performs an outer join of tables A and

B and returns all rows from B (a right outer join), use theANSI RIGHT [OUTER] syntax, or apply the outer join

operator (+) to all columns of A in the join condition. For all

rows in B that have no matching rows in A, Oracle returnsnull for any select list expressions containing columns of A.

#4 (1z0001q263)

Oracle performs a join whenever multiple tables appear in the query's _________ clause



Your answer is:Correct answer is: FMOR


site:

A join is a query that combines rows from two or more

tables, views, or materialized views. Oracle performs a joinwhenever multiple tables appear in the query's FROM clause.

The query's select list can select any columns from any of

these tables. If any two of these tables have a column namein common, you must qualify all references to these columns

throughout the query with table names to avoid ambiguity.

#5 (1z0001q261)

The mechanism by which Oracle sorts values for the ORDER BY clause is specified

explicitly by what initialization parameter (fill in the blank):


Your answer is:

Correct answer is: NLS_SORT


The mechanism by which Oracle sorts values for the ORDER

BY clause is specified either explicitly by the NLS_SORTinitialization parameter or implicitly by the

NLS_LANGUAGE initialization parameter. You can change

the sort mechanism dynamically from one linguistic sortsequence to another using the ALTER SESSION statement.

You can also specify a specific sort sequence for a single


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query by using the NLSSORT function with the NLS_SORT

parameter in the ORDER BY clause.

#7 (1z0001q265)

What is known as a join with a join condition containing an equality operator (fill in theblank):


Your answer is:

Correct answer is: equijoin


site:

An equijoin is a join with a join condition containing an

equality operator. An equijoin combines rows that haveequivalent values for the specified columns. Depending on

the internal algorithm the optimizer chooses to execute thejoin, the total size of the columns in the equijoin condition in

a single table may be limited to the size of a data block minus

some overhead. The size of a data block is specified by the

initialization parameter DB_BLOCK_SIZE.

#8 (1z0001q273)

What command do you use to rebuild an existing index (fill in the blank):


Your answer is:

Correct answer is: ADEILNRTX


site:Use the ALTER INDEX statement to change or rebuild an

existing index.

#9 (1z0001q271)

What SQL command do you use to change the increment, minimum and maximum

values, cached numbers, and behavior of an existing sequence (fill in the blank):


Your answer is:


33/65

Correct answer is: ACELNQRSTU


Use the ALTER SEQUENCE statement to change the

increment, minimum and maximum values, cached numbers,

and behavior of an existing sequence. This statement affectsonly future sequence numbers.

#10 (1z0001q274)

You may use the CREATE INDEX statement to create an index on (choose all thatapply):


B) One or more scalar typed object attributes of a cluster

C) One or more columns of a table

D) A nested table storage table

Your answer is:

Correct answer is: BCD


Use the CREATE INDEX statement to create an index on

One or more columns of a table, a partitioned table,

an index-organized table, or a cluster

One or more scalar typed object attributes of a table

or a cluster

A nested table storage table for indexing a nested

table column

#11 (1z0001q264)Oracle never executes a join of three or more tables orderly.

A) True


C) False

Your answer is:



34/65


site:

To execute a join of three or more tables, Oracle first joinstwo of the tables based on the join conditions comparing

their columns and then joins the result to another table based

on join conditions containing columns of the joined tablesand the new table. Oracle continues this process until all

tables are joined into the result. The optimizer determines the

order in which Oracle joins tables based on the joinconditions, indexes on the tables, and, in the case of the cost-

based optimization approach, statistics for the tables.

#12 (1z0001q268)

An inner join is always a:

A) outer join

B) equil join

C) simple join

D) right join

E) left join

Your answer is:


Explanation : According to the documentation available at the Oracle website:An inner join (sometimes called a "simple join") is a join of

two or more tables that returns only those rows that satisfy

the join condition.

#13 (1z0001q267)When will a Cartesian product be returned?

A) when two tables in a join query have only a single join condition

B) when two tables in a join query have too many join conditions


D) when two tables in a join query have no join condition

Your answer is:



35/65


site:

If two tables in a join query have no join condition, Oraclereturns their Cartesian product. Oracle combines each row of

one table with each row of the other. A Cartesian product

always generates many rows and is rarely useful. Forexample, the Cartesian product of two tables, each with 100

rows, has 10,000 rows. Always include a join condition

unless you specifically need a Cartesian product. If a queryjoins three or more tables and you do not specify a join

condition for a specific pair, the optimizer may choose a join

order that avoids producing an intermediate Cartesian

product.

#14 (1z0001q259)

In Oracle SQL, all set operators have equal precedence.

A) True


C) False

Your answer is:



site:You can combine multiple queries using the set operators

UNION, UNION ALL, INTERSECT, and MINUS. All setoperators have equal precedence. If a SQL statement contains

multiple set operators, Oracle evaluates them from the left to

right if no parentheses explicitly specify another order.

#15 (1z0001q255)

In Oracle, the select list appears after the SELECT keyword and before the FROMclause.

A) True


C) False

Your answer is:



36/65


site:

The list of expressions that appears after the SELECTkeyword and before the FROM clause is called the select list.

Within the select list, you specify one or more columns in the

set of rows you want Oracle to return from one or moretables, views, or materialized views. The number of columns,

as well as their datatype and length, are determined by the

elements of the select list.

#16 (1z0001q260)The UNION ALL operator does not eliminate duplicate selected rows from the result set.

A) True

B) FalseC) This is hard to determine.

Your answer is:



The UNION operator returns only distinct rows that appear

in either result, while the UNION ALL operator returns all

rows. The UNION ALL operator does not eliminate

duplicate selected rows.

#17 (1z0001q266)

When performing an equijoin, the size of a data block involved is specified by what

initialization parameter (fill in the blank):


Your answer is:

Correct answer is: BCDEIKLOSZ_Explanation : According to the documentation available at the Oracle web

site:

According to the documentation available at the Oracle web

site:An equijoin is a join with a join condition containing an

equality operator. An equijoin combines rows that have

equivalent values for the specified columns. Depending on

the internal algorithm the optimizer chooses to execute the


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join, the total size of the columns in the equijoin condition in

a single table may be limited to the size of a data block minus

some overhead. The size of a data block is specified by theinitialization parameter DB_BLOCK_SIZE.

#18 (1z0001q258)

Which of the following are the valid set operators in Oracle SQL (choose all that apply):

A) UNION ALL

B) UNION

C) MINUS

D) INTERSECT

Your answer is:Correct answer is: ABCD


site:

You can combine multiple queries using the set operatorsUNION, UNION ALL, INTERSECT, and MINUS. All set

operators have equal precedence. If a SQL statement contains

multiple set operators, Oracle evaluates them from the left toright if no parentheses explicitly specify another order.

#19 (1z0001q256)

The optimizer uses what to choose an execution plan for your select statement (fill in the

blank):


Your answer is:

Correct answer is: hints


You can use comments in a SELECT statement to pass

instructions, or hints, to the Oracle optimizer. The optimizeruses hints to choose an execution plan for the statement.

#20 (1z0001q272)The ALTER SEQUENCE statement can affect only the future sequence numbers.


38/65

A) False

B) True


Your answer is:



site:

Use the ALTER SEQUENCE statement to change theincrement, minimum and maximum values, cached numbers,

and behavior of an existing sequence. This statement affects

only future sequence numbers.

#20 (1z0001q272)The ALTER SEQUENCE statement can affect only the future sequence numbers.

A) False

B) True


Your answer is:


Explanation : According to the documentation available at the Oracle website:Use the ALTER SEQUENCE statement to change the

increment, minimum and maximum values, cached numbers,

and behavior of an existing sequence. This statement affects

only future sequence numbers.

#1 (1z0001q279)

What statement do you use to dynamically alter your Oracle instance (fill in the blank):


Your answer is:

Correct answer is: AELMRSTY


site:Use the ALTER SYSTEM statement to dynamically alter


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your Oracle instance. The settings stay in effect as long as

the database is mounted.

#2 (1z0001q295)

When you create a database user, what clause can you use to make the user global (fill inthe blank):


Your answer is:

Correct answer is: ABGLOY


site:The GLOBALLY clause lets you create a global user. Such a

user must be authenticated by the enterprise directoryservice.

#3 (1z0001q284)

When the REMOTE_LOGIN_PASSWORDFILE initialization parameter is setto_________, Oracle returns an error when you attempt to re-create a database.


Your answer is:Correct answer is: CEILSUVX


site:

To create a database, you must have the SYSDBA systemprivilege.

If the REMOTE_LOGIN_PASSWORDFILE initialization

parameter is set to EXCLUSIVE, Oracle returns an errorwhen you attempt to re-create the database. To avoid this

message, either set the parameter to SHARED, or re-create

your password file before re-creating the database.

#4 (1z0001q299)To drop a role, you must have been granted the role with what option (fill in the blank):



40/65

Your answer is:

Correct answer is: ADIMNOPT


site:

You must have been granted the role with the ADMIN

OPTION or you must have the DROP ANY ROLE systemprivilege.

#5 (1z0001q283)

To create a database, you must have what system privilege (fill in the blank):


Your answer is:

Correct answer is: ABDSYExplanation : According to the documentation available at the Oracle web

site:

To create a database, you must have the SYSDBA system

privilege.If the REMOTE_LOGIN_PASSWORDFILE initialization

parameter is set to EXCLUSIVE, Oracle returns an error

when you attempt to re-create the database. To avoid thismessage, either set the parameter to SHARED, or re-create

your password file before re-creating the database.

#6 (1z0001q296)

When creating a user, what clause can you use to allow the user to allocate up to certain

bytes of space in the tablespace (fill in the blank):


Your answer is:

Correct answer is: AOQTU


site:Use the QUOTA clause to allow the user to allocate up tointeger bytes of space in the tablespace. Use K or M to

specify the quota in kilobytes or megabytes. This quota is the

maximum space in the tablespace the user can allocate.


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#7 (1z0001q286)

To create a relational table in another user's schema, you must have what system

privilege (fill in the blank):


Your answer is:

Correct answer is: ABCELNRTY


site:

To create a relational table in your own schema, you must

have the CREATE TABLE system privilege. To create atable in another user's schema, you must have CREATE

ANY TABLE system privilege. Also, the owner of the

schema to contain the table must have either space quota on

the tablespace to contain the table or UNLIMITEDTABLESPACE system privilege.

#8 (1z0001q275)

Oracle supports which of the following types of index (choose all that apply):

A) B-tree indexes

B) Function-based indexes

C) Domain indexes

D) Partitioned indexes

E) Bitmap indexes

Your answer is:

Correct answer is: ABCDE


Oracle supports several types of index:

Normal indexes (by default, Oracle creates B-treeindexes)

Bitmap indexes, which store rowids associated with

a key value as a bitmap

Partitioned indexes, which consist of partitionscontaining an entry for each value that appears in the

indexed column(s) of the table

Function-based indexes, which are based on

expressions. They enable you to construct queries that


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evaluate the value returned by an expression, which

in turn may include functions (built-in or user-

defined).

Domain indexes, which are instances of an

application-specific index of type indextype

#9 (1z0001q288)

In Oracle, the absolute maximum number of columns in a table is (fill in the blank):


Your answer is:



The absolute maximum number of columns in a table is

1000. However, when you create an object table (or arelational table with columns of object, nested table, varray,

or REF type), Oracle maps the columns of the user-defined

types to relational columns, creating in effect "hiddencolumns" that count toward the 1000-column limit.

#10 (1z0001q294)

When you create a database user, what clause can you use to create an external user (fillin the blank):


Your answer is:

Correct answer is: AELNRTXY


Specify EXTERNALLY to create an external user. Such a

user must be authenticated by an external service (such as anoperating system or a third-party service). In this case, Oracleto relies on the login authentication of the operating system

to ensure that a specific operating system user has access to a

specific database user.


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#11 (1z0001q281)

What statement can you use to compile a database trigger (fill in the blank):


Your answer is:

Correct answer is: AEGILRT


Use the ALTER TRIGGER statement to enable, disable, or

compile a database trigger.

#12 (1z0001q282)

If you use the CREATE DATABASE statement on an existing database, all data in the

datafiles will be lost.

A) False

B) True


Your answer is:



site:Use the CREATE DATABASE statement to create a

database, making it available for general use.

This statement erases all data in any specified datafiles thatalready exist in order to prepare them for initial database use.

If you use the statement on an existing database, all data in

the datafiles is lost.

#13 (1z0001q297)When creating a user, what clause can you use to specify that you want the user's

password to expire (fill in the blank):


Your answer is:

Correct answer is: ADEIOPRSWX


site:


44/65

Specify PASSWORD EXPIRE if you want the user's

password to expire. This setting forces the user (or the DBA)

to change the password before the user can log in to thedatabase.

#14 (1z0001q298)

You may use the __________ statement to remove a role from the database (fill in the

blank):


Your answer is:

Correct answer is: DELOPR


site:Use the DROP ROLE statement to remove a role from thedatabase. When you drop a role, Oracle revokes it from all

users and roles to whom it has been granted and removes it

from the database. User sessions in which the role is already

enabled are not affected. However, no new user session canenable the role after it is dropped.

#15 (1z0001q289)

When you create a table, what clause lets you specify a value to be assigned to the

column if a subsequent INSERT statement omits a value for the column (fill in theblank):


Your answer is:

Correct answer is: ADEFLTU


site:

The DEFAULT clause lets you specify a value to be assigned

to the column if a subsequent INSERT statement omits avalue for the column. The datatype of the expression must

match the datatype of the column. The column must also be

long enough to hold this expression.


45/65

#16 (1z0001q293)

After creating a user in your database, you should grant the user at least what privilege so

that he can connect (fill in the blank):


Your answer is:

Correct answer is: ACEINORST


site:

You must have CREATE USER system privilege. When you

create a user with the CREATE USER statement, the user'sprivilege domain is empty. To log on to Oracle, a user must

have CREATE SESSION system privilege. Therefore, after

creating a user, you should grant the user at least the

CREATE SESSION privilege.

#17 (1z0001q280)

The ALTER TRIGGER command can be used to change the definition of an existing

trigger.

A) True


C) False

Your answer is:



site:This statement does not change the declaration or definition

of an existing trigger. To redeclare or redefine a trigger, use

the CREATE TRIGGER statement with the OR REPLACE

keywords.

#18 (1z0001q276)To create an index in another schema, you must have what system privilege (fill in the

blank):


Your answer is:


46/65

Correct answer is: ACDEINRTXY


To create an index in another schema, you must have

CREATE ANY INDEX system privilege. Also, the owner of

the schema to contain the index must have either theUNLIMITED TABLESPACE system privilege or space

quota on the tablespaces to contain the index or index

partitions.

#19 (1z0001q285)

Tables are created with no data even when a query is specified.

A) False


C) True

Your answer is:



site:

Tables are created with no data unless a query is specified.You can add rows to a table with the INSERT statement.

After creating a table, you can define additional columns,partitions, and integrity constraints with the ADD clause of

the ALTER TABLE statement. You can change thedefinition of an existing column or partition with the

MODIFY clause of the ALTER TABLE statement.

#20 (1z0001q278)

What statement do you use to specify any of the conditions that affect your connection tothe database (fill in the blank):


Your answer is:

Correct answer is: AEILNORST


site:

Use the ALTER SESSION statement to specify or modify


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any of the conditions or parameters that affect your

connection to the database. The statement stays in effect until

you disconnect from the database.

#1 (1z0001q318)

What is the PL/SQL construct that lets you name a work area and access its stored

information (fill in the blank):


Your answer is:

Correct answer is: cursor


site:Oracle uses work areas to execute SQL statements and storeprocessing information. A PL/SQL construct called a cursor

lets you name a work area and access its stored information.

There are two kinds of cursors: implicit and explicit. PL/SQL

implicitly declares a cursor for all SQL data manipulationstatements, including queries that return only one row. For

queries that return more than one row, you can explicitly

declare a cursor to process the rows individually.

#2 (1z0001q306)You can specify RESETLOGS and NORESETLOGS with ALTER DATABASE only

after:

A) performing incomplete media recovery

B) performing complete media recovery with a backup control file


Your answer is:

Correct answer is: ABExplanation : According to the documentation available at the Oracle web

site:

Specify NORESETLOGS to retain the current state of the log

sequence number and redo log files. Restriction: You canspecify RESETLOGS and NORESETLOGS only after

performing incomplete media recovery or complete media

recovery with a backup control file. In any other case, Oracle

uses the NORESETLOGS automatically.


48/65

#3 (1z0001q315)

Which of the following are PL/SQL datatypes (choose all that apply):

A) BOOLEAN

B) BINARY_INTEGER

C) NUMBER

D) DATE

E) CHAR

Your answer is:

Correct answer is: AB


Variables can have any SQL datatype, such as CHAR,DATE, or NUMBER, or any PL/SQL datatype, such as

BOOLEAN or BINARY_INTEGER. For example, assume

that you want to declare a variable named part_no to hold 4-digit numbers and a variable named in_stock to hold the

Boolean value TRUE or FALSE.

#4 (1z0001q317)

Declaring a constant in PL/SQL requires that you add the keyword __________ andimmediately assign a value to the constant (fill in the blank):


Your answer is:

Correct answer is: ACNOST


site:

Declaring a constant is like declaring a variable except that

you must add the keyword CONSTANT and immediatelyassign a value to the constant. Thereafter, no more

assignments to the constant are allowed.

#5 (1z0001q314)In PL/SQL, you can call local subprograms ONLY from the block in which they are

defined.


49/65

A) False


C) True

Your answer is:



site:You can nest sub-blocks in the executable and exception-

handling parts of a PL/SQL block or subprogram but not in

the declarative part. Also, you can define local subprogramsin the declarative part of any block. However, you can call

local subprograms only from the block in which they are

defined.

#6 (1z0001q319)PL/SQL implicitly declares a cursor for all SQL data manipulation statements, excluding

queries that return only one row.


B) False

C) True

Your answer is:



Oracle uses work areas to execute SQL statements and store

processing information. A PL/SQL construct called a cursorlets you name a work area and access its stored information.

There are two kinds of cursors: implicit and explicit. PL/SQL

implicitly declares a cursor for all SQL data manipulation

statements, including queries that return only one row. Forqueries that return more than one row, you can explicitly


#7 (1z0001q311)

Which of the following correctly describe PL/SQL (choose all that apply):


50/65


B) It avoids nested sub-blocks

C) It is a block-structured language

D) It uses physical blocks

Your answer is:



site:

PL/SQL is a block-structured language. That is, the basicunits (procedures, functions, and anonymous blocks) that

make up a PL/SQL program are logical blocks, which can

contain any number of nested sub-blocks. Typically, eachlogical block corresponds to a problem or subproblem to be

solved. Thus, PL/SQL supports the divide-and-conquerapproach to problem solving called stepwise refinement.

#8 (1z0001q309)When you specify the STANDBY DATABASE clause with ALTER DATABASE, the

standby database must be mounted but not open.

A) False

B) True


Your answer is:



Specify the STANDBY DATABASE clause to recover the

standby database using the control file and archived redo logfiles copied from the primary database. The standby database

must be mounted but not open.

#9 (1z0001q303)

Oracle implicitly commits the current transaction before but not after every DDLstatement.

A) True


51/65

B) False


Your answer is:


site:

Oracle implicitly commits the current transaction before and

after every DDL statement.

#10 (1z0001q312)You can nest sub-blocks in what part of a PL/SQL block (choose all that apply):

A) This is hard to determine.B) declarative

C) executable

D) exception-handling

Your answer is:

Correct answer is: CD


You can nest sub-blocks in the executable and exception-handling parts of a PL/SQL block or subprogram but not inthe declarative part. Also, you can define local subprograms

in the declarative part of any block. However, you can call

local subprograms only from the block in which they are

defined.

#11 (1z0001q301)

Which of the following SQL commands require exclusive access to the specified object


A) SELECT

B) CREATE

C) ALTER

D) DROP


52/65

Your answer is:

Correct answer is: BCD


site:

The CREATE, ALTER, and DROP commands require

exclusive access to the specified object. For example, anALTER TABLE statement fails if another user has an open

transaction on the specified table.

#12 (1z0001q310)When you want to perform tablespace recovery, what clause do you specify to recover

only the specified tablespace (fill in the blank):


Your answer is:

Correct answer is: ABCELPST


site:Specify the TABLESPACE clause to recover only the

specified tablespaces. You can use this clause if the database

is open or closed, provided the tablespaces to be recoveredare offline.

#13 (1z0001q307)You cannot open a database READ ONLY when (choose all that apply):

A) it requires recovery.

B) it is currently opened READ WRITE by another instance.

C) while the database is open READ ONLY

Your answer is:


Explanation : According to the documentation available at theOracle web site:

You cannot open a database READ ONLY if it is

currently opened READ WRITE by another instance.

You cannot open a database READ ONLY if it

requires recovery.

You cannot take tablespaces offline while the


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database is open READ ONLY. However, you can

take datafiles offline and online, and you can recover

offline datafiles and tablespaces while the database isopen READ ONLY.

#14 (1z0001q302)Which of the following SQL commands do NOT require exclusive access to the specified

object (choose all that apply):

A) AUDIT

B) REVOKE

C) COMMENT

D) GRANT

E) ANALYZE

Your answer is:



site:The GRANT, REVOKE, ANALYZE, AUDIT, and

COMMENT commands do not require exclusive access to

the specified object. For example, you can analyze a table

while other users are updating the table.

#15 (1z0001q316)

What is the assignment operator in PL/SQL (fill in the blank):


Your answer is:

Correct answer is: :=Explanation : According to the documentation available at the Oracle web

site:

You can assign values to a variable in three ways. The first

way uses the assignment operator (:=), a colon followed byan equal sign. You place the variable to the left of the

operator and an expression (which can include function calls)

to the right.


54/65

#16 (1z0001q313)

In PL/SQL, you can define local subprograms in the declarative part of any block.

A) True


C) False

Your answer is:



site:You can nest sub-blocks in the executable and exception-

handling parts of a PL/SQL block or subprogram but not in

the declarative part. Also, you can define local subprogramsin the declarative part of any block. However, you can calllocal subprograms only from the block in which they are

defined.

#17 (1z0001q308)

What option do you use with the ALTER DATABASE command to have Oracleautomatically generate the name of the next archived redo log file needed to continue the

recovery operation (fill in the blank):


Your answer is:

Correct answer is: ACIMOTU


site:Specify AUTOMATIC if you want Oracle to automatically

generate the name of the next archived redo log file needed

to continue the recovery operation. If the

LOG_ARCHIVE_DEST_n parameters are defined, Oracle

scans those that are valid and enabled for the first localdestination. It uses that destination in conjunction with

LOG_ARCHIVE_FORMAT to generate the target redo logfilename. If the LOG_ARCHIVE_DEST_n parameters are

not defined, Oracle uses the value of the

LOG_ARCHIVE_DEST parameter instead.


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#18 (1z0001q304)

What option do you use with the ALTER DATABASE command to reset the current log

sequence number to 1 and discards any redo information that was not applied (fill in theblank):


Your answer is:

Correct answer is: EGLORST


site:

Specify RESETLOGS to reset the current log sequencenumber to 1 and discards any redo information that was not

applied during recovery, ensuring that it will never be

applied. This effectively discards all changes that are in the

redo log, but not in the database.

#19 (1z0001q305)

What option do you use with the ALTER DATABASE command to open the database

after performing media recovery with an incomplete recovery using the RECOVER

clause or with a backup control file (fill in the blank):


Your answer is:Correct answer is: EGLORST


site:

You must specify RESETLOGS to open the database after

performing media recovery with an incomplete recoveryusing the RECOVER clause or with a backup control file.

After opening the database with this clause, you should

perform a complete database backup.

#20 (1z0001q300)In Oracle, a set of privileges that can be granted to users is known as a (fill in the blank):


Your answer is:

Correct answer is: role



56/65

site:

Use the CREATE ROLE statement to create a role, which is

a set of privileges that can be granted to users or to otherroles. You can use roles to administer database privileges.

You can add privileges to a role and then grant the role to a

user. The user can then enable the role and exercise theprivileges granted by the role.

#1 (1z0001q329)

In a WHILE-LOOP statement, a condition is evaluated _________ each iteration of the

loop.

A) After

B) During

C) Before


Your answer is:



site:

The WHILE-LOOP statement associates a condition with asequence of statements. Before each iteration of the loop, the

condition is evaluated. If the condition is true, the sequence

of statements is executed, then control resumes at the top ofthe loop. If the condition is false or null, the loop is bypassed

and control passes to the next statement.

#2 (1z0001q340)

What statement can you use to explicitly lock the entire table (fill in the blank):


Your answer is:Correct answer is: ABCEKLOT


With the LOCK TABLE statement, you can explicitly lock

entire tables. With the SELECT FOR UPDATE statement,you can explicitly lock specific rows of a table to make sure

they do not change before an update or delete is executed.


57/65

However, Oracle automatically obtains row-level locks at

update or delete time. So, use the FOR UPDATE clause only

if you want to lock the rows before the update or delete.

#3 (1z0001q321)Which of the following statements can you use to control a cursor (choose all that apply):

A) OPEN

B) APPEND

C) CLOSE

D) FETCH

Your answer is:

Correct answer is: ACDExplanation : According to the documentation available at the Oracle web

site:

You use the OPEN, FETCH, and CLOSE statements to

control a cursor. The OPEN statement executes the queryassociated with the cursor, identifies the result set, and

positions the cursor before the first row. The FETCH

statement retrieves the current row and advances the cursor

to the next row. When the last row has been processed, theCLOSE statement disables the cursor.

#4 (1z0001q204)

What is the default length for a CHAR column in byte (fill in the blank):

Your answer is:



The default length for a CHAR column is 1 byte and themaximum allowed is 2000 bytes. A 1-byte string can beinserted into a CHAR(10) column, but the string is blank-

padded to 10 bytes before it is stored.

#5 (1z0001q326)

To choose among several values or courses of action, which of the following control

structure is more appropriate?


58/65

A) FOR-LOOP

B) CASE

C) IF-THEN-ELSE

D) WHILE-LOOP

E) EXIT-WHEN

Your answer is:



To choose among several values or courses of action, you

can use CASE constructs. The CASE expression evaluates a

condition and returns a value for each case. The casestatement evaluates a condition and performs an action

(which might be an entire PL/SQL block) for each case.

#6 (1z0001q327)

What PL/SQL statements let you execute a sequence of statements multiple times (fill inthe blank):


Your answer is:

Correct answer is: loop


site:

LOOP statements let you execute a sequence of statementsmultiple times. You place the keyword LOOP before the first

statement in the sequence and the keywords END LOOP

after the last statement in the sequence.

#7 (1z0001q325)Which of the following are the valid Pl/SQL control structures (choose all that apply):

A) EXIT-WHEN

B) CASE

C) FOR-LOOP

D) IF-THEN-ELSE


59/65

E) WHILE-LOOP

Your answer is:



Control structures are the most important PL/SQL extension

to SQL. Not only does PL/SQL let you manipulate Oracledata, it lets you process the data using conditional, iterative,

and sequential flow-of-control statements such as IF-THEN-

ELSE, CASE, FOR-LOOP, WHILE-LOOP, EXIT-WHEN,

and GOTO. Collectively, these statements can handle anysituation.

#8 (1z0001q328)In PL-SQL, the FOR-LOOP statement lets you specify a range of integers, then execute a

sequence of statements once for each of those integers.

A) True

B) False


Your answer is:

Correct answer is: AExplanation : According to the documentation available at the Oracle web

site:

The FOR-LOOP statement lets you specify a range ofintegers, then execute a sequence of statements once for each

integer in the range.

#9 (1z0001q320)

PL/SQL cursor is either ___________ or ______________.

A) internal, external

B) defined, blank

C) implicit, explicit

D) secured, regular

Your answer is:


60/65



Oracle uses work areas to execute SQL statements and store

processing information. A PL/SQL construct called a cursor

lets you name a work area and access its stored information.There are two kinds of cursors: implicit and explicit. PL/SQL

implicitly declares a cursor for all SQL data manipulation

statements, including queries that return only one row. Forqueries that return more than one row, you can explicitly


#10 (1z0001q322)

Cursor variables are true PL/SQL variables to which you can assign new values and

which you can pass to subprograms.

A) True


C) False

Your answer is:



site:

Like a cursor, a cursor variable points to the current row inthe result set of a multi-row query. But, unlike a cursor, a

cursor variable can be opened for any type-compatible query.It is not tied to a specific query. Cursor variables are true

PL/SQL variables, to which you can assign new values and

which you can pass to subprograms stored in an Oracle

database. This gives you more flexibility and a convenientway to centralize data retrieval.

#11 (1z0001q334)

You can use what attribute to declare a record t

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