best practices for oracle ebs r12 upgrade

Oracle EBS R12 Upgrade Best Practices

Copyright 2012. Apps Associates LLC. 1

Value Delivery - Core to Our Mission

E-Business Suite

Implementation &

Managed Services

OBIEE, Pre-Built BI

Analytics

Hyperion EPM

Subject Matter

Experts

Best Practice

Methodology

High Value ROI

Local/Global


Middleware,

Integration

Infrastructure

Services

Service Delivery

Boston New York Chicago Atlanta Germany Netherlands India Middle East

Agenda

Focus EBS R12

Upgrade Best Practices

Upgrade Issues

Lessons from Previous Upgrades


Focus EBS R12


Focus EBS R12

Roadmap

Oracle EBS Roadmap

11.5.10 12.0 12.1

12.1.2 12.1.3

Planned 12.2..Major

Release

Minor

ReleaseRup 1..Rup 2..


Nov 2004 Jan 2007Dec 2009

May 2009Aug 2010

Support Timeline

Exception for first 13 months of

sustaining support

Extended support period ends by Jan

2015


Image Ref. Steven Chan Blog

Extended support period extended

by nineteen months till Jan 2018

New fixes for Severity 1 production issues

United States Form 1099 updates for the 2013 tax year

Payroll regulatory updates for the US, Can, UK, and Aus for each

countrys fiscal year ending in 2014

R12 Technology Stack

Logical Architecture


Supported Upgrade Paths

Upgrade Path information on below MOS note:

Database Preparation Guidelines for an E-Business Suite Release 12.1.1 Upgrade [ID 761570.1]

E-Business Suite Releases Available Paths

11.5.9 (base or CU1) with 9.2.0.x or 10.1.0.x database Path A

11.5.9 CU2 with 9.2.0.x or 10.1.0.x database Path A

11.5.9 CU2 with 10.2.0.2 database Path A

11.5.9 CU2 with 10.2.0.3 database Path D




11.5.10 (base or CU1) with 9.2.0.x or 10.1.0.x database Path A

11.5.10.2 with 9.2.0.x or 10.1.0.x database Path A, Path B, or Path C

11.5.10.2 with 10.2.0.2 database Path B or Path C

11.5.10.2 with 10.2.0.3 database Path B, Path C, or Path D

11.5.10.2 with 10.2.0.4 database Path B, Path C, or Path D

11.5.10.2 with 10.2.0.5 database Path C or Path D

11.5.10.2 with 11.1.0.6 or 11.1.0.7 database Path C or Path E

11.5.10.2 with 11.2.0.1, 11.2.0.2, or 11.2.0.3 database Path E

Recommended Upgrade Paths


Plan Your Upgrades

Single upgrade projects vs. Multiple upgrade projects

Database Upgrade, Platform Migration, OATM Migration


Test Cycles


Allocate Hardware for Upgrade

CPU

Size of the database

Number of workers

Amount of data processed

Memory

Infrastructure / Number of nodes

Review the Hardware


Infrastructure / Number of nodes

Disk

IOPS

High IOPS value (1100-4500) is seen during UPG phases

Increased Java processing

50% increase in memory consumption

Batch processing jobs are multi-threaded Minimal CPU Processing speed increased

R12 Facts


3% growth observed for 3 years worth upgraded data

Read/Write disk access time around 10-20 ms for better

performance Direct IO/Concurrent IO [ID 418714.1]

Upgrade Resources

Review Data model comparison reports

Database object definition differences for each supported database object type

MOS note: 1290886.1

Review EBS File system comparison report

Provides a comprehensive comparison of file system artifacts between different Oracle E-Business Suite releases for important file types


file types

MOS note: 1446430.1

Review Preinstall patches report

Any patch that fixes upgrade itself (critical upgrade failures, upgrade performance issues)

MOS note: 1448102.1

Identify the Tasks

Run the Upgrade Manual Script to identify specific tasks


Best Practices

Prepare/Upgrade the Database

INIT.ORA

SGA

PGA

R12 Specific Parameters (396009.1)

No Archive log mode


No Archive log mode

Bigger Redo logs

Purge recycle bin objects

purge dba recyclebin;

Size Tablespaces

Auto extend ON

Best Practices [continued]

Prepare/Upgrade the Applications

Gather stats with GATHER_AUTO

Run purge programs to flush obsolete data

Move to shared APPL_TOP

Disable custom indexes, triggers


Disable custom indexes, triggers

Disable AOL audit trial

Complete Pre-Downtime Tasks

Staging area

Download all patches

Drop event alert triggers in custom schema

Operating System pre-requisites



Install 12.1 Techstack

Upgrade Java to latest certified version

Compile the invalid objects and capture their information

Product specific tasks identified from Tums report

Tune Java

Default Java version with R12.1 is 1.6.0_10

Excessive memory consumption

Upgrade Java version to 1.6.0_32 or latest 1.6.0_35

Error occurred during initialization of VM. Could not reserve enough

space for object heap.



space for object heap.

Edit ADJRIOPTS entry in your $APPL_TOP/admin/adovars.env file

change "-mx512m" to "-mx1024m" (minimum)

Edit ADJREOPTS entry in the APPS XML file and increase the -mx size

to the same value

Number of AD Workers

1 or 1.5x #Cores

Parallel AD Improves Patching Performance

Distribute workers across application nodes

Batch Size



Batch Size

1K Default

Test between 1k and 10k

Merge NLS Patches

Preinstall performance patches

Apply Help and NLS patches online

Apply HRGlobal driver online



Merge and apply Product specific Post upgrade Patches

62 Patches merged to 10 Patches

20 hours patching reduced to 8 hours



Immediate backups required after 12.1

Upgrading to 12.1.3 is a multi-step process

Intermediate upgrade to 12.1

Allocate parallel channels for backup

Prepare your net backup to run backups from new R12



Prepare your net backup to run backups from new R12

file system

Wherever possible automate backups using scripts

Other Tools Can Be Considered

Oracle Application Testing Suite

OATS for scalability, performance and load testing

Test kit also available for R12.1.3

User Productivity Kit

UPK for self-service training through interactive user interface


UPK for self-service training through interactive user interface

simulations

Issues


Issues

RapidWiz pre-install checks fail

Workers failed due to hardcoded APPS / APPLSYS

username in scripts

Socket Read Timeout Errors with Database

Several scripts failing with a ORA-29855 executing

Upgrade Issues


Several scripts failing with a ORA-29855 executing

ODCIINDEXCREATE

Error adsstats.sql

Post Upgrade Issues

R12 Look and Feel

Patch 14103263 and complete post steps

IBY tables encrypted

Upgrade Issues and Solutions for Oracle Payments [ID 1466998.1]

Customizations

Re-Create Custom Database Directory locations


Other Product Specific Issues

Unable To Complete Sub Ledger Journals Using xla_journal_entries_pub_pkg.complete_journal_entry [ID 1344561.1]

Patch 10388305: In Oracle Purchasing, the fix to display tax name, tax code in the XML used for PDF generation - 8842297 was causing regression issues

Patch 11883614: Derive intercompany accounts from specific rules for many to many intercompany journals with intercompany mode is (1,2,3)

Lessons Learnt


Lessons Learnt

Lessons Learnt

Mock upgrades before actual upgrade

Minimize issues during upgrade

Allocate enough hardware resources

Proper time estimates


Upgrade by Request

Extent of Integrations with upgrade

References

Oracle Applications Release 12 Upgrade Sizing and Best Practices [ID

399362.1]

Planning Your Oracle E-Business Suite (EBS) Upgrade from Release 11i to

Release 12 [ID 1406960.1]

http://docs.oracle.com/cd/B53825_01/current/acrobat/121upgrade.pdf

COLLABORATE 2010: EBS R12.1 Presentation and Helpful R12 Upgrade

Notes [ID 1080606.1]


Notes [ID 1080606.1]

http://www.oracle.com/us/solutions/benchmark/apps-

benchmark/description-166952.html#R12

http://www.oracle.com/us/support/library/lifetime-support-applications-

069216.pdf

http://www.oracle.com/technetwork/oem/app-test/oats930-test-starter-

kit-ebs1213-1524432.pdf

Thank You

best practices for oracle ebs r12 upgrade

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