migrating critical business applications to apex ... · pdf filemigrating critical business...
TRANSCRIPT
![Page 1: Migrating Critical Business Applications to APEX ... · PDF fileMigrating Critical Business Applications to APEX Successfully . ... Agile Oracle Application Express APress, ... Form/Report](https://reader034.vdocument.in/reader034/viewer/2022051523/5a791ce87f8b9a00168d5cef/html5/thumbnails/1.jpg)
TH Technology
Karen Cannell [email protected]
http://www.thtechnology.com
Migrating Critical Business
Applications to APEX …
Successfully
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TH Technology
Migrate Critical Apps to APEX … Successfully
About Me …
Karen Cannell ~ Consultant, TH Technology
Mechanical/SW Engineer - Analyzed, designed,
developed, converted, upgraded, enhanced legacy &
database applications for 25+ years
Building APEX applications for government, medical,
engineering industries since HTMLDB
Leveraging the Oracle 10g,11g, 12c suite of tools
Editor, Technical Journal
Send Me ODTUG Technical Journal Content!
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TH Technology
Migrate Critical Apps to APEX … Successfully
Beginning Application Express
4.2, APress, 2013
Agile Oracle Application Express
APress, 2012
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TH Technology
Migrate Critical Apps to APEX … Successfully
About You …
New to APEX?
MS Access Applications?
Oracle Forms?
APEX Experience ?
Migration Plans?
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TH Technology
Migrate Critical Apps to APEX … Successfully
Agenda
Planning
Migration Process
The APEX Migration Workshop
Lessons Learned
Plan for your Migration Processes
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TH Technology
Migrate Critical Apps to APEX … Successfully
We’ll Learn
What to Expect When Undertaking a Migration
Project
Overview of SQL Developer Migration
Workbench
Overview of the APEX Migration Process
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TH Technology
Migrate Critical Apps to APEX … Successfully
Why Migrate?
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TH Technology
Migrate Critical Apps to APEX … Successfully
Why Migrate?
Consolidate - Platform, Management, DB
Reliability
Scalability
Performance
Critical Business Function onto Enterprise DB
Support
Security
Accessibility
The Decision Process - a Project in Itself
“You Have To” “Forms is Going Away”
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TH Technology
Migrate Critical Apps to APEX … Successfully
Migration != Conversion
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TH Technology
Migrate Critical Apps to APEX … Successfully
Migration Is Not Easy
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TH Technology
Migrate Critical Apps to APEX … Successfully
Migration === Change
User Interface Will Change
Forms to Web
Ms Access to Web
User Experience Will Change
Form/Report Flow Will Change
Web Pages are Different Than ….
Sound Database Design Essential
APEX Will Magnify Poor Query Performance
Re-Engineer and Re-Design Will Be Needed
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TH Technology
Migrate Critical Apps to APEX … Successfully
Essentials
Experienced Resources – Both Sides
Commitment
Re-Evaluation, Re-Engineering
Communication
Manage Expectations
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TH Technology
Migrate Critical Apps to APEX … Successfully
Migration
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TH Technology
Migrate Critical Apps to APEX … Successfully
Migration
One Way
Forward
Better
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TH Technology
Migrate Critical Apps to APEX … Successfully
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TH Technology
Migrate Critical Apps to APEX … Successfully
Successful Migration Project
> = Functionality
> = Value
< = Cost to Operate
End Users
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TH Technology
Migrate Critical Apps to APEX … Successfully
Planning – Consider These … at least!
Scope
Business Process
Database Design
Form Design
Input / Output
Security
User Interface
Standards
Overall Process
Framework?
Themes?
Resources
Documentation
Training
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TH Technology
Migrate Critical Apps to APEX … Successfully
Requirements
Decision
Commitment
Business Experts
Technical Experts
APEX Experts
Hardware, Software
Database/Server
Support
User Support
Acceptance Criteria
Training
Communication
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TH Technology
Migrate Critical Apps to APEX … Successfully
Decision
Solid Management Decision
Committed Funding
All Stakeholders On Board
For The Duration
Be Prepared to Play Cheerleader
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TH Technology
Migrate Critical Apps to APEX … Successfully
Commitment
Resources
Bandwidth
HW and SW
Support
Schedules
Funding
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TH Technology
Migrate Critical Apps to APEX … Successfully
Experts
Business Expert
Legacy App Technical Expert
APEX Expert
All on Speaking Terms
Able to Share Knowledge
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TH Technology
Migrate Critical Apps to APEX … Successfully
Hardware and Software
Database and Application Server
File Servers
Disk Space
Backup
Bandwidth for Estimated Load
Licenses
Dev – Test – Production Environments
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TH Technology
Migrate Critical Apps to APEX … Successfully
DB and System Support
Dev – Test – QA – Production
Downtime?
Service Periods?
Plan Ahead to Get Approvals, Resources
Expectations
Response Time
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TH Technology
Migrate Critical Apps to APEX … Successfully
Post-Implementation Support
End User Help Desk
Developers?
End User Documentation
Technical Documentation
Who Writes it?
Costs
Timing – Ready for Test Phase?
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TH Technology
Migrate Critical Apps to APEX … Successfully
Acceptance Criteria
Have A Test Plan
Define Key Functionality
Execute the Test Plan
Make Sure Its There
W/O a Test Plan, Can Never Succeed
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TH Technology
Migrate Critical Apps to APEX … Successfully
Training
End Users
Developers
Support Resources
Do Not Assume they Know APEX
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TH Technology
Migrate Critical Apps to APEX … Successfully
Communication
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TH Technology
Migrate Critical Apps to APEX … Successfully
Communication
All Stakeholders
Continual
Honest
Manage Expectations
Play Cheerleader When You Have To
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TH Technology
Migrate Critical Apps to APEX … Successfully
The APEX Migration Process
Migrate to APEX - Successfully
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TH Technology
Migrate Critical Apps to APEX … Successfully
Overview- MS Access
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TH Technology
Migrate Critical Apps to APEX … Successfully
Overview – Oracle Forms
Forms picture
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TH Technology
Migrate Critical Apps to APEX … Successfully
Overview – Other Platforms
Customization
Generate App
Analyze
Upload/Build
Objects
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TH Technology
Migrate Critical Apps to APEX … Successfully
Overview – Work Balance
Customization
Generate App
Analyze
Upload/Build
Objects
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TH Technology
Migrate Critical Apps to APEX … Successfully
APEX Migration Process
Export Legacy DB Objects
Tables, Views, Triggers, Data
Migrate DB Objects to Oracle
Relational DB Design
Migrate Application Components
Code Modules, Forms, Reports
Organize into APEX Application
Web Pages
Web Application
Customize / FIX IT
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TH Technology
Migrate Critical Apps to APEX … Successfully
Tools to Help
Oracle Exporter – MS Access
Forms2XML – Forms/Reports File Convertors
SQL Developer Migration Workbench
APEX Migration Workshop
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TH Technology
Migrate Critical Apps to APEX … Successfully
Oracle Exporter
MS Access Only
97, 2000, 2002, 2003, 2007
No Plans for 2010
Download from APEX Migration Workshop
SQL Developer 3.2 – Integrated
SQL Developer 4.0 ? Not Integrated
32bit MS Access …
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TH Technology
Migrate Critical Apps to APEX … Successfully
MS Access 32bit vs 64bit
Beware 32bit vs 64bit
Cannot Mix MS Access 32bit vs 64bit
Oracle Exporter == 32bit
Does Not Run in 64bit MS Access
SQL Developer
32bit SQL Dev Cannot Connect to 64bit MS Access
64bit SQL Dev Cannot Connect to 32bit MS Access
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TH Technology
Migrate Critical Apps to APEX … Successfully
Exporter Supported Versions
97, 2000, 2002, 2003, 2007
2010 NOT Supported
Options:
Save As Earlier Version
Export Objects as XML (one at a time)
Use Ms Access Export to ODBC Database Option
(External Data Export—More—ODBC Database)
Table at a time
Make sure 32bit MS Access gets 32bit ODBC driver, 64bit
Access get 64bit ODBC driver
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TH Technology
Migrate Critical Apps to APEX … Successfully
Exporter - Demo
.. Cannot demo …
I have 64bit MS Access now!
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TH Technology
Migrate Critical Apps to APEX … Successfully
Start Oracle Exporter (32bit .mde!)
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TH Technology
Migrate Critical Apps to APEX … Successfully
Select MS Access .mdb file
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TH Technology
Migrate Critical Apps to APEX … Successfully
Full Schema and Table Data Export Completed…
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TH Technology
Migrate Critical Apps to APEX … Successfully
Output Files
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TH Technology
Migrate Critical Apps to APEX … Successfully
Exporter - Results
.SQL – Migration Repository file for APEX
.XML – SQL Developer file
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TH Technology
Migrate Critical Apps to APEX … Successfully
In General, These Steps:
Oracle Exporter
Review Output Files
Import Files into SQL Dev Migration Repos
Generate Output … schema.sql
View Resulting schema.sql … Run?
Use Scratch Editor .. Fix Invalids
Eventually Good New Schema
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TH Technology
Migrate Critical Apps to APEX … Successfully
Data Migration
Schema First, Then Data
Export/Import
SQL Loader
SQL Dev Migration
“Copy to Oracle”
My Best Bet on 64b MS Access
Tedious for Many Tables
Load then ETL to Final Structures
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TH Technology
Migrate Critical Apps to APEX … Successfully
Exporter/ DB Migration Results
Tables Tables
Queries Views
Program Units Empty Modules
Must Manually Rewrite
Check These Things:
FK Constraints
Triggers
The Script Itself
OK for a Few
Modules,
BIG WORK for
Complex Apps
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TH Technology
Migrate Critical Apps to APEX … Successfully
SQL Developer Migration
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TH Technology
Migrate Critical Apps to APEX … Successfully
SQL Dev Migration Workbench
Database to Oracle
SQL Server – MySQL – Sybase – DB2 –
Informix – MS Access – Teradata
Earlier Version – More MS Access
Later Version – More Major DB
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TH Technology
Migrate Critical Apps to APEX … Successfully
Migration Wizard
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TH Technology
Migrate Critical Apps to APEX … Successfully
SQL Developer Tasks
Relational Tables
PKs, FKs, Constraints
Triggers, Sequences
Views
Adjustments to Your Schema
Data Migration
Time Spent Here Is Worth It!
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TH Technology
Migrate Critical Apps to APEX … Successfully
APEX Performance
Poor Performance is MAGNIFIED in APEX
Fix SQL Performance Issues Early
Fix SQL Performance Issues Outside of APEX
Good Relational Design Pays Off
Don’t Skimp Here!
Good Relational Design Is Important
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TH Technology
Migrate Critical Apps to APEX … Successfully
If Migrating Oracle Forms…
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TH Technology
Migrate Critical Apps to APEX … Successfully
Oracle Forms Conversion
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TH Technology
Migrate Critical Apps to APEX … Successfully
Convert Parts to XML
Forms2XML for Forms, Menus, Libraries
Forms (.FMB), Menus (.mmb), Object libraries
(.OLB)
Utility or Command Line
Forms Builder File Conversion Utility
PL/SQL Library (.PLL)
Report Builder File Conversion Utility
Binary (.RDF), ASCII (.REX), JSP (.JSP)
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Migrate Critical Apps to APEX … Successfully
Forms Conversion, cont’d
Create APEX Workspaces and Users
APEX Administrator
Upload Database Objects into Workspace
Schema
SQL Scripts
SQL Developer ( or your favorite SQL-PL/SQL IDE)
Sample Files:
forms_conversion_ddl.sql
forms_conversion_data_insert.sql
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Migrate Critical Apps to APEX … Successfully
SQL Developer – Execute DDL script(s)
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TH Technology
Migrate Critical Apps to APEX … Successfully
Create Conversion Project
Application Builder Migrations
Lower right on the page
Create Project
Load Forms Module XML File First
(myForm_fmb.xml)
Load Additional XML Files
Reports, Menus, OLBs, PLLs
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TH Technology
Migrate Critical Apps to APEX … Successfully
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Migrate Critical Apps to APEX … Successfully
Enter Project Details
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Migrate Critical Apps to APEX … Successfully
Upload Main Form First
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Migrate Critical Apps to APEX … Successfully
Upload Other Forms, Reports, Menus,
OLBs, PLLs
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Migrate Critical Apps to APEX … Successfully
Project Created.
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Migrate Critical Apps to APEX … Successfully
Migration Project Page
Example with Forms, Reports, Menus,
OLBs, PLLs
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TH Technology
Migrate Critical Apps to APEX … Successfully
Now What?
Am I Really 81.22% Done?
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Migrate Critical Apps to APEX … Successfully
Review and Edit Modules
Project Details
Forms
Reports
Menus
Object Libraries
PL/SQL Libraries
Use Annotations to Track Progress
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Migrate Critical Apps to APEX … Successfully
Project Details - Components
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Migrate Critical Apps to APEX … Successfully
Project Details – Forms Triggers
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TH Technology
Migrate Critical Apps to APEX … Successfully
Review Form Components
Alerts
Blocks
List of Values
Program Units
Record Groups
Triggers
Canvas
Coordinates
Editor
Property Class
Visual Attributes
Windows
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Migrate Critical Apps to APEX … Successfully
Component Mapping – Generally…
Alerts Messages
Blocks Regions
List of Values LOV
Program Units Manually Rewrite
Record GroupsNamed LOV
Triggers Rewrite many of these as Computation, Validation or Process
Canvas Template
Coordinates
EditorHTML Editor
Property Class
Visual Attributes
Window Page
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Migrate Critical Apps to APEX … Successfully
Forms
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TH Technology
Migrate Critical Apps to APEX … Successfully
Lots of Manual Work To Do
Just Keep Pluggin’ …
Component by Component
Use Annotations to Assign Components to
Developers
Track Overall Progress on Project Details Page
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TH Technology
Migrate Critical Apps to APEX … Successfully
Annotations
Use to Assign Developers
Notes
Tags
Most Every
Component
Change
when done
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TH Technology
Migrate Critical Apps to APEX … Successfully
Annotations
Migration Utility Will Decide Some For You
Notes
Tags
Note as to
why not
included by
Migration
Utility
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Migrate Critical Apps to APEX … Successfully
Program Units
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TH Technology
Migrate Critical Apps to APEX … Successfully
Code That Does Not Translate
IF NOT ( Form_Success) …
Get_Relation_Property()
QUERY_MASTER_DETAILS
Go_Block
Check_Package_Failure
Set_Block_Property
Etc., Etc., Etc. …
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TH Technology
Migrate Critical Apps to APEX … Successfully
Set Application Defaults
Tabs
Authentication
Application Theme
Globalization
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TH Technology
Migrate Critical Apps to APEX … Successfully
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TH Technology
Migrate Critical Apps to APEX … Successfully
Generate
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TH Technology
Migrate Critical Apps to APEX … Successfully
Lets One Override The Default Settings
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Migrate Critical Apps to APEX … Successfully
Done! … well, … sort of.
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TH Technology
Migrate Critical Apps to APEX … Successfully
Check it out at http://localhost:7777/apex42/f?p=114
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TH Technology
Migrate Critical Apps to APEX … Successfully
Things Not Generated
Forms Based on Views
Non-Database Blocks
PL/SQL Libraries
Menus
Object Libraries
Alerts
Property Classes, Visual Styles and Formats
You Need to Figure Out IF and Where These Go
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TH Technology
Migrate Critical Apps to APEX … Successfully
Things Generated
Forms Block Region, one per Page
Master-Detail Block Master Detail Page
Tabular Form Tabular Form
Need PK, INSERT or UPDATE
LOV, RG, CB Date Pickers, Editors When Possible
POST-QUERY Triggers* (when moved into Enhanced Query)
Reports
Program Units IFF PL/SQL
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TH Technology
Migrate Critical Apps to APEX … Successfully
Migration Advice
Move Business Logic Into Packages
Use/Develop Standard Theme CSS
Templates
Navigation Menus vs Tab, Button Placement, Page Hierarchy
Page Flow
Communicate
IT WILL LOOK and PERFORM DIFFERENT than Users Are Used To
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TH Technology
Migrate Critical Apps to APEX … Successfully
The APEX Migration Workshop
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TH Technology
Migrate Critical Apps to APEX … Successfully
Oracle 12c Migration Enhancements
Enhanced SQL Developer
Enhanced SQL Developer Migration Workbench
IDENTITY Columns – defined in the table, no need for
sequence and trigger
Implicit Result Sets
32K VARCHARs - up from 4000, MAX_SQL_STRING_SIZE
DB parameter
FETCH FIRST ROWS - SELECT * FROM T1 FETCH FIRST
10 PERCENT ROWS ONLY
SQL Translation Framework
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TH Technology
Migrate Critical Apps to APEX … Successfully
SQL Translation Framework
Does Not Convert to SQL or PL/SQL
For Apps w ODBC, JDBC, OLE DB or .NET
Enables Client-Side Code to Run Unchanged
Neat Stuff But Not Usually a Help for APEX
Migrations
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TH Technology
Migrate Critical Apps to APEX … Successfully
“..that’s an awful lot of work …”
Build From Scratch is
Always an Option …
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TH Technology
Migrate Critical Apps to APEX … Successfully
Get Help – Experience Counts
Consultants
Frameworks
Consult / Training
Co-Developing
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TH Technology
Migrate Critical Apps to APEX … Successfully
Lessons Learned
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TH Technology
Migrate Critical Apps to APEX … Successfully
What Works
Re-Evaluate, Re-Engineer
for Oracle DB
for Web Pages
for Web Flow / Interface
Good Relational DB Design
Have Standards – Apply Standards
Communicate
Evaluate – Reassess – Repeat
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TH Technology
Migrate Critical Apps to APEX … Successfully
What Does Not Work
Straight Conversion
Migrating as Isolated Project
Migration as APEX Training
Skimp on DB Design
No or Skimpy Training
No or Poor Communication
“Aw, This is Easy…”
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TH Technology
Migrate Critical Apps to APEX … Successfully
Lessons Learned
Plan
Know Your Team
Re-Think, Re-Engineer the Business
Process
Take Time for Good DB Design
Migration Utilities May Help
Maintain Communications
Keep Showing, Validating Progress
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TH Technology
Migrate Critical Apps to APEX … Successfully
Honesty
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TH Technology
Migrate Critical Apps to APEX … Successfully
Summary
Migration is a Process
Re-Evaluate – Re-Engineer
These HELP
SQL Developer Migration Workbench
APEX Migration Workshop
Lots of Manual Work to Do
Communication - Expectations
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TH Technology
Migrate Critical Apps to APEX … Successfully
Migration
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Migrate Critical Apps to APEX … Successfully
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Migrating Critical
Apps to APEX …
Successfully
www.thtechnology.com
Questions ?
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Migrate Critical Apps to APEX … Successfully
Share Your Knowledge !
Call for Articles/Reviewers
ODTUG Technical Journal ALWAYS Looking for Content!
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Successfully
www.thtechnology.com
Thank You
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TH Technology
Migrate Critical Apps to APEX … Successfully
References/Recommended Reading
APPLICATION EXPRESS MIGRATION WORKSHOP http://www.oracle.com/technetwork/developer-tools/apex/application-express/mig-index-
095631.html
ORACLE APPLICATION EXPRESS 4.2 APPLICATION MIGRATION GUIDE http://docs.oracle.com/cd/E37097_01/doc/doc.42/e35126/appmgr_start.htm
MIGRATING APPLICATIONS AND DATABASES WITH ORACLE DATABASE 12C
https://docs.google.com/viewer?url=http%3A%2F%2Fwww.oracle.com%2Ftechnetwork%2Fd
atabase%2Fmigration%2Fmigrating-to-oracle-database-wp-12c-1896125.pdf
SQL DEVELOPER SUPPLEMENTARY INFORMATION FOR MS ACCESS
MIGRATIONS http://docs.oracle.com/cd/E39885_01/doc.40/e18459/toc.htm
APEX ACCESS MIGRATION TUTORIAL
http://www.oracle.com/technetwork/developer-tools/apex/application-
express/tutorial-090294.html
ORACLE DATABASE AND APPLICATIONS MIGRATIONS FORUM For help, there is a separate Oracle forum for Application Migrations, including MS Access:
http://forums.oracle.com/forums/category.jspa?categoryID=27
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TH Technology
Migrate Critical Apps to APEX … Successfully
References/Recommended Reading
SQL DEVELOPER MIGRATION WORKBENCH http://www.oracle.com/technetwork/database/migration/index-084442.html
MIGRATING APPLICATIONS AND DATABASES WITH ORACLE DATABASE 12C https://docs.google.com/viewer?url=http%3A%2F%2Fwww.oracle.com%2Ftechnetwork%2Fd
atabase%2Fmigration%2Fmigrating-to-oracle-database-wp-12c-1896125.pdf
USING SQL TRANSLATION FRAMEWORK IN ORACLE DATABASE 12C
TUTORIAL (FYI)
https://apex.oracle.com/pls/apex/f?p=44785:24:0::NO:24:P24_CONTENT_ID,P24_PREV_PA
GE:7500,16