upgrading oracle db 11.2.0.1 to 11.2.0.3

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Upgrading Oracle DB 11.2.0.1 to 11.2.0.3

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There are various ways to upgrade to Oracle 11.2.0.3 and I will be performing an out-of-

place upgrade (best practice) using the Database Configuration Assistant (DBUA).

Select values from v$version (Pre-install) -

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One of the first steps before upgrading is to check any issues that you may encounter

during the upgrade process. There is an Pre-Upgrade Information Tool that can be

downloaded from the Oracle Support site. This is basically a pre-upgrade script that can be

executed on the database and it gathers information about the database configuration and

settings that might need to be modified/updated before the actual upgrade. There are

various scripts depending upon from which version you are upgrading to Oracle 11.2.0.3, I

will be using the utlu112i_5.sql.

Log in to the system as the owner of the Oracle Home and connect to the database as

SYSDBA and execute the above script and spool it to a file

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Resolving errors and warnings

1.Emptying recycle bin

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Gathering dictionary statistics

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Download the Oracle Database Patch set (1040530) from the Oracle Support site.

Go to the new installation downloads and run installation

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When finished, set the environment variable for new home -

$export ORACLE_HOME=/oracle/app/oracle/product/11.2.0/dbhome_2

$export PATH=$ORACLE_HOME/bin:$PATH

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Copy the init/spfile and password files from the 11.2.0.1 to 11.2.0.3.

Copy the listener.ora, sqlnet.ora and tnsnames.ora files from 11.2.0.1 to 11.2.0.3.

Start the services and

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Check the latest version with select * from v$version;