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http://www.club-oracle.com/forums/migrating-to-oracle-apps-r12-from-11-

5-10-2-a-t1124/

Key points to note in Oracle Apps R12 upgrade from 11i

-- R 12 upgrade process involve replacing 11i Tech stack (9iAS & 806) to Fusion

Middleware (10g Application Server)

-- Basic upgrade process involves Rapid Install & Autopatch

-- Rapid Install involves installing new R12 tech stack as mentioned in first point

-- Auto patch process involves upgrading E-Business Suite database compatible to

R12 (Data Model)

-- Final upgrade process is of updating data model using enhanced version of

AutoPatch

-- Minimum version from which you can upgrade to R12 is 11.5.7 and higher

-- Minimum database version from which you can upgrade to R12 is 9iso if your database is still 8i or

-- Database must be 10.2.0.2 before or during upgrade process & prior to running

AutoPatch which will upgrade datamodel to R12

As per Oracle R12 Upgrade Documentation, Apps 11i Instance is classified in Two

Categories based on Apps & DB Version

Category 1 - 11.5.7, 11.5.8, 11.5.9 (CU1), 11.5.10 (CU1)

Category 2 - 11.5.9 (CU2), 11.5.10 (CU2) or 11.5.10.2

For Category 1 , database should be upgraded during R12 upgrade process

(Downtime for R12 upgrade process will be more as this involve database upgrade

as well) but for Category 2 Database can be upgraded before R12 upgrade .

Why can't I upgrade database to 10.2.0.2 before for category 1 ?

This is because there is no Interoperability patch for above release & 10.2.0.2 was

supported for 11.5.9 (CU2) & 11.5.10(CU2) only . (Wish I could be on 11.5.10.2 ;-) )

What are advantages of Upgrading database to 10.2.0.2 before R12 upgrade ?

Downtime can be broken down to two small downtimes (one for Database upgrade

another one for R12 upgrade) and can be achieved during weekends or long

weekends (depending on your system & resources)

Various upgrade paths (mainly 3) revolves around application version & database

version (mainly on database version).

Path A for apps R12 Upgrade :

These are for instances where database is not 10.2 & DB is upgraded during R12


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Upgrade

Install the R12 Technology Stack and 10.2.0.2 Oracle home

Upgrade the Database to 10.2.0.2

Perform Database Steps

Complete the R12 upgrade

Path B for apps R12 Upgrade :

These are for instances 11.5.9.2 & 11.5.10.2 and database is 10.2

Install the R12 Technology Stack and 10.2.0.2 Oracle home



Path C for apps R12 Upgrade :

These are for instances 11.5.9.2 & 11.5.10.2 and database is NOT 10.2, Here

upgrade database first to 10.2.

Upgrade database to 10.2.0.2

Use 11i with 10.2.0.2 DB & then in next downtime window



Related :

For full Steps follow metalink Note # 403339.1 Oracle 10gR2 Database Preparation

Guidelines for an E-Business Suite Release 12 Upgrade

http://avdeo.com/2008/03/04/upgrading-oracle-application-11i-to-e-business-suite-r12/

Upgrading Oracle Application 11i to E-Business Suite R12

March 4, 2008 advaitLeave a commentGo to comments

Overview of upgrade to R12

Upgrading an application from 11i to R12 involves, upgrading the database side, upgrading themiddleware techstack and upgrading the application side.

Supported upgrade path for application side upgrade is as given below.
http://avdeo.com/2008/03/04/upgrading-oracle-application-11i-to-e-business-suite-r12/http://avdeo.com/2008/03/04/upgrading-oracle-application-11i-to-e-business-suite-r12/http://avdeo.com/author/advait/http://avdeo.com/2008/03/04/upgrading-oracle-application-11i-to-e-business-suite-r12/#respondhttp://avdeo.com/2008/03/04/upgrading-oracle-application-11i-to-e-business-suite-r12/#commentshttp://avdeo.com/2008/03/04/upgrading-oracle-application-11i-to-e-business-suite-r12/http://avdeo.com/2008/03/04/upgrading-oracle-application-11i-to-e-business-suite-r12/http://avdeo.com/author/advait/http://avdeo.com/2008/03/04/upgrading-oracle-application-11i-to-e-business-suite-r12/#respondhttp://avdeo.com/2008/03/04/upgrading-oracle-application-11i-to-e-business-suite-r12/#comments


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In case of database upgrade, you have to upgrade the database to 10gR2 (10.2.0). Becauseapplication R12 can be used only with 10g database.

Upgrade Process

All upgrade functionality has been consolidated into a single unified upgrade driver thatperforms the upgrade without reliance on the information formerly captured on the AutoUpgradescreens.

Rapid Install provides the most up-to-date, certified version of Oracle Applications products,along with the certified technology stack components. In an upgrade, it creates the new filesystem for the application (middle) tier components and the new file system for the database.After the upgrade, you run Rapid Install again to configure servers and start services.

An upgrade also includes various manual steps, including those that direct you to run scripts or

apply patches. You rely on AutoPatch to apply all patches, including the unified driver thatperforms the upgrade to Release 12.

Upgrade Steps in brief

Here are the 4 simple steps, briefly presented below for upgrade. These steps are at very highlevel of abstraction. We will detailed each steps as we move on further.

1) Understand installed components, system sizing information, NLS considerations2) Prepare for upgrade using Upgrade Manual Script(TUMS).3) Upgrading to R12. This includes upgrading the database and applying the required patches

through AutoPatch.4) Post-Upgrade process. Complete the upgrade process by applying the latest RUP patches tokeep the system most current.

We wont be considering the functional upgrade task here.

Upgrade steps in detail
http://advait.wordpress.com/2008/03/04/upgrading-oracle-application-11i-to-e-business-suite-r12/231/


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1) Understanding installed components

Technology Stack Components

Rapid Install automatically installs and configures the required technology stack components for

both the database tier and the application tier.The database tier technology stack for both a new installation and for a system upgrade is basedon Oracle10g Release 2.The technology stack installed on the application tier includes, among other components:- Oracle 10g Application Server (AS) 10.1.2- Oracle 10g Application Server (AS) 10.1.3- Oracle Developer 10g (includes Oracle Forms)- Java (J2SE) native plug-in 1.5.0_08- Java Developer Kit (JDK) 5.0

Memory Requirements

To calculate the memory requirements for an upgrade, consider the following:- Number of concurrent users- Infrastructure requirements for multi-tiered architectureFor example:A test upgrade of the largest Oracle production system (oraprod) used the following:- Database tier machine 48 GB of memory- Application tier machine 12 GB of memoryA test upgrade of the Vision database and application tier machine used 6 GB of memory.

Database Size

To estimate the increase in required disk space for upgrading, consider the products, the numberof languages being installed, and changes in the data model.

For example:In a test upgrade of the largest Oracle production system (oraprod), the database increased 10-20percent. In a test upgrade, the Vision database increased 5 percent. For guidelines based on anupgrade of the Oracle production system (oraprod), see E-Business Suite Release 12 UpgradeSizing and Best Practices (Doc ID: 399362.1).

Database Backup

*** We strongly recommend that you back up your entire system before you begin the upgrade.***

Database Initialization Parameters

Initialization parameters required at each stage of the upgrade may vary depending on when youupgrade your database. Review the requirements for these parameters before you begin. Refer to


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metalink note ID 396009.1 for initialization parameters.Change the following initialization parameters as specified below for upgrade process. Once theupgrade process completes, reset the parameters back.

db_file_multiblock_read_count Remove this parameter. (this is not required).

_db_file_optimizer_read_count = 8 (default setting is 8. Keep default setting). job_queue_processes (set the value of this parameters equal to number ofCPUs).

parallel_max_servers (set the value of this parameters equal to twice thenumber of CPUs).

pga_aggregate_target (refer to metalink note ID 396009.1 for recommendedvalue).

Make sure that the temporary tablespace you have is locally managed and not dictionarymanaged. You can check this information using below query.

select CONTENTS,EXTENT_MANAGEMENT,ALLOCATION_TYPE from

dba_tablespaces where tablespace_name=TEMP;

CONTENTS EXTENT_MANAGEMENT ALLOCATION_TYPE TEMPORARY LOCAL UNIFORM

Else if the extent management is not local, you can drop and recreate temp tablespace using thebelow command.

NLS Upgrade Considerations

For NLS considerations, please refer toApplications upgrade docs.

Character Sets

You have to be careful while selecting the character set for APPL_TOP. Depending on whetheryour Applications system connects to the database during the upgrade process, you may be ableto select a new character set for the Release 12 APPL_TOP on the Rapid Install wizard upgradescreens. However, if you do, the new set must be either identical to, or compatible with, theexisting database character set. If you change the character set in the APPL_TOP to one that isnot compatible with the current database character set, the upgraded system will be corrupted.

SQL> create TEMPORARY tablespace TEMP tempfile ts_p_temp1.dbf size 2048MEXTENT MANAGEMENT LOCAL UNIFORM SIZE 1M;

2) Prepare for upgrade using Upgrade Manual Script(TUMS) and upgrading database

R12 upgrade process involve replacing 11i Tech stack (9iAS & 806) to FusionMiddleware (10g Application Server)

Basic upgrade process involves Rapid Install & Autopatch
http://download.oracle.com/docs/cd/B40089_08/current/acrobat/r12upg11i.pdfhttp://download.oracle.com/docs/cd/B40089_08/current/acrobat/r12upg11i.pdfhttp://download.oracle.com/docs/cd/B40089_08/current/acrobat/r12upg11i.pdf


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Rapid Install involves installing new R12 tech stack as mentioned in first point Auto patch process involves upgrading E-Business Suite database compatible

to R12 (Data Model) Final upgrade process is of updating data model using enhanced version of

AutoPatch Minimum version from which you can upgrade to R12 is 11.5.7 and higher Minimum database version from which you can upgrade to R12 is 9i

As per Oracle R12 Upgrade Documentation, Apps 11i Instance is classified in Two Categoriesbased on Apps & DB Version

Category 1 11.5.7, 11.5.8, 11.5.9 (CU1), 11.5.10 (CU1)Category 2 11.5.9 (CU2), 11.5.10 (CU2) or 11.5.10.2

Why we cannot upgrade database to 10.2.0.2 before for category 1 ?This is because there is no Interoperability patch for above release & 10.2.0.2 was supported for11.5.9 (CU2) & 11.5.10(CU2) only.

What are advantages of Upgrading database to 10.2.0.2 before R12 upgrade ?Downtime can be broken down to two small downtimes (one for Database upgrade another onefor R12 upgrade) and can be achieved during weekends or long weekends (depending on yoursystem & resources)

The following table lists the paths available for each of the E-Business Suite 11i releasessupported for an upgrade to R12

PATH A:

Plan Upgrade to R12o Follow the standard R12 upgrade path as documented in the Oracle

Applications Upgrade Guide: Release 11i to Release 12. Perform allrequirements documented in Chapter 1 and all applicable steps inChapter 2.


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Install the R12 Technology Stack and 10.2.0.2 Oracle home Upgrade the Database to 10.2.0.3 Apply Database Patches Apply the database patches as per the metalink note ID 403339.1. (6319846

for Linux) Apply Oracle Service patch 5880762 (conditional) Complete the R12 upgrade Perform the remaining steps in Chapter 3 and all applicable steps in Chapter

4 to complete the upgrade to R12.

PATH B:

Plan Upgrade to R12 Apply Database Patches Apply the database patches as per the metalink note ID 403339.1. (6319846

for Linux) Apply Oracle Service patch 5880762 (conditional)


PATH C:

Plan Upgrade to R12 Upgrade Database to 10.2.0 Continue with the R12 Upgrade or Use the 11i/10.2.0 System Apply Database Patches Apply the database patches as per the metalink note ID 403339.1. (6319846

for Linux) Apply Oracle Service patch 5880762 (conditional) Complete the R12 upgrade

In our case, we are following path C. We were having 11.5.10 + CU2 application with 9idatabase. We will upgraded the database to 10GR2.

Then we will apply the database patches as per metalink note ID 403339.1 followed by servicepack and then will upgrade the application to R12.

Now preparing the application system is till main step # 2 which includes upgrading the databaseas well. From main step 3, upgrade process for R12 starts. You may wish to stop after carring outthe upgrade for database, run your business for some time (may be few months) and then go forR12 upgrade. This gives a comparatively less downtime for your existing application as you dont

have to do all at the same time and can be done in steps.

The Upgrade Manual Script (TUMS) examines your current configuration and creates a reportthat lists upgrade tasks that do not apply to your system. This report contains information that isunique to your system configuration, so its output is relevant to your individual upgrade.Omitting the steps listed in the TUMS report can significantly reduce upgrade downtime.Youcreate the TUMS report by applying a Release 11i patch, which loads objects into your APPS


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schema that TUMS uses to examine your Applications configuration. Your current Applicationsenvironment is not affected.

Below are the list of steps I am mentioning, which are the required steps. I am skipping theconditional steps here, just to make it brief. You can as well check the oracle documentation for

the complete steps.

Step 1) Apply latest AD patch level. The latest AD patch is 11i.AD.I.6 and checkin number is6502082.SQL> select patch_level from fnd_product_installations2 where patch_level like %AD%;

PATCH_LEVEL11i.AD.I.6

Step 2) Run TUMS utility- Download and apply TUMS patch (5120936). This will supply you one script adtums.sql,which you can run to generate the report.- To generate the reportcd $AD_TOP/patch/115/sqlsqlplus / @adtums.sql is where the report file will get generated. You need to create directory indatabase using create directory command. Also the directory path you are mentioning hereshould exists in UTL_FILE_DIR.

SQL> create directory APPS_DIR as /usr/tmp;

Directory created.

[applmgr@ocvmrh2081 sql]$ sqlplus apps/apps @adtums.sql APPS_DIR

step 3) Convert to Multiple Organizations architecture

Step 4) Review sizes of old and new tablespaces

Step 5) Run AD preparation scriptsDownload patch 5726010. This will provide 3 scripts adgncons.sql, adgrants_nt.sql, adgrants.sql.

Script adgrants_nt.sql is not for Linux and so can be ignored.- First run the script adgncons.sql. This will create script adcrtbsp.sql. This script (adcrtbsp.sql)creates the new tablespaces, allocates unlimited tablespace to all APPS users, updatesfnd_product_installation table with correct data and index tablespace information, assigns defaulttablespace to all APPS users, and sets the new_ts_mode flag in fnd_product_groups to Y.

[applmgr@ocvmrh2081 5726010]$ sqlplus apps/apps @adgncons.sql apps apps


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Run adcrtbsp.sql with system user ID and password from database side

[applmgr@ocvmrh2081 5726010]$ sqlplus system/manager @adcrtbsp.sql

- adgrants.sql will grants SYS privileges needed by Applications, and creates required views in

SYS.

You need to run this command as sysdba. This will prompt you for FND_ORACLE_USERIDowner. You need to enter applsys when it prompts.

Step 6) Gather schema statistics for CBOYou can do this by Submitting Gather Schema Statistics concurrent request for ALLschemas.

Step 7) Backup DatabaseTake the backup of database before we go further with upgrade process

Step 8 ) Upgrading the database from 9i to 10g. You can refer to upgrade database in Oracleapplications 11i post to have detailed steps. The database version should be 10.2.0.2

Step 9) Prepare the application for upgrade. You need to run the rapid wizard in upgrade mode.This will create the required file system, install the required techstack components. Below are thescreen flow for the same.
http://advait.wordpress.com/2007/10/15/upgrading-database-to-10g-for-oracle-applications-11i/http://advait.wordpress.com/2007/10/15/upgrading-database-to-10g-for-oracle-applications-11i/http://advait.wordpress.com/2008/03/04/upgrading-oracle-application-11i-to-e-business-suite-r12/213/http://advait.wordpress.com/2007/10/15/upgrading-database-to-10g-for-oracle-applications-11i/


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http://advait.wordpress.com/2008/03/04/upgrading-oracle-application-11i-to-e-business-suite-r12/215/http://advait.wordpress.com/2008/03/04/upgrading-oracle-application-11i-to-e-business-suite-r12/214/


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After running this wizard, you will find that your existing application is intact and also a new filesystem has been created for you.

All your services should be up and running. Your 11i application should be intact. You mightface an issue, that services (specially Apache) wont come up and your URL wont open. In this

case you can check if the services get started from inst directory that got created after you runthe wizard.

You can go to location /u01/app/applmgr/inst/apps//admin/scripts and runadstpall.sh script from that location. If the services were started from this location, then it will bestopped. Then you can start the services back from$COMMON_TOP/admin/script/ location.

Also during running of the wizard configuration information will be written to following files.you can check at your prompt and it will list the configuration files.

Configuration file written to: /u01/app/oracle/db/tech_st/10.2.0/appsutil/conf_PROD.txtConfiguration file written to:/u01/app/applmgr/apps/apps_st/appl/admin/ocvmrh2081/conf_PROD.txtConfiguration file written to: /u01/app/applmgr/inst/apps/PROD_ocvmrh2081/conf_PROD.txt

3) Upgrade Process


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Below are the steps for upgrade process from 11.5.10.CU2 to 12.0.0. Till now we have justprepared the application for upgrade. Creating the neccessary filesystem layout and databaseupgrade was part of preparing for upgrade.

Step 1) Shut down application tier listeners and concurrent managers

Step 2) Back up the database Once again take a backup. I am not crazy asking backup so manytimes, but in case we face any issue and if we dont have latest stable backup, we will be helpless.

Step 3) Ensure that Maintenance Mode is enabled Put your application in maintenance mode

Step 4) Apply Release 12 AD minipack (4502962)For applying this patch, you need to go in R12 APPL_TOP directory and source the env filepresent in that APPL_TOP. This is becasue you will be applying this patch to your newAPPL_TOP and not 11i APPL_TOP. So make sure to source env file present in newAPPL_TOP.

Step 5) Run the American English upgrade patch driver (u4440000.drv)For applying this patch also, you need to go in R12 APPL_TOP directory and source the env filepresent in that APPL_TOP.

Step 6) Run the NLS upgrade patch driver (conditional)

For other product related steps and NLS synchronization, please check the Oracle Upgrade docsfor 11i to R12.

Step 7) Disable Maintenance Mode

Once these step are carried out last step is finishing the upgrade process. Follow the below steps.

1) generate appsutil.zip on appmgr side and copy the same to new ORACLE_HOME. The newORACLE_HOME directory structure will be created as /u01/app/oracle/db/tech_st/10.2.02) unzip appsutil.zip in new ORACLE_HOME3) run autoconfig in new ORACLE_HOME

Once these steps are done, run rapid install again by provding the config file which wasgenerated before. The file location as we noted down before is/u01/app/applmgr/apps/apps_st/appl/admin/ocvmrh2081/conf_PROD.txt

After these steps are performed, the application system will be configured and ready for use.This completes the upgrade activity from 11i to R12.

References:

Metalink Note ID : 394692.1Metalink Note ID : 403339.1


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Metalink Note ID : 396009.1Metalink Note ID : 329476.1Metalink Note ID : 215527.1

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