Difference between 12.1.3 and 12.2.4.

There are lot of difference between 12.1.3 and 12.2.4.Below are the main differences between 12.1.3 and 12.2.4.


1)In R12.2 we have two filesystems fs1(run filesystem) and fs2(patch filesystem), where as In R12.1.3 we only one application filesystem.


2)In R12.2 we have the Application servers replaced by Weblogic server to manage the technology statck.

The 10.1.3 Application server is replaced by FMW_HOME.
The major change in R12.2 is involvement of Weblogic server to manager all the forms,oacore servers.



3)In 12.1.3 we have adpatch utility for patching, In R12.2.4 we have adop(online patching) utility patching.

adop utility involves 5 phases to apply a standard patch in Oracle EBS R12.2.4.

Phase 1:
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Prepare :- prepare phase involves synchronization of the filesystems fs1 (run ,filesystem) and fs2(patch filesystem), filesystems are inter changeable.

Phase 2:
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Apply :- In this phase we can apply all the patches related to application. (Note: These patches need to be copied in fs_ne (non editioned filesystems))

Phase 3:
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Finalize :- In this phase we are getting ready for cutover phase

Phase 4:
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Cutover :- In cutover phase the filesystem switchover takes place. Previously the filesystem which was patch filesystem will now become run filesystem.

Phase 5:
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Cleanup :- In cleanup phase all the obsolute objects gets compiled .

adop online patching utility doesn't require downtime. It involves minimal downtime during cutover phase where switching of filesystems happens.
We can apply lot of patches and do cutover any time to minimize downtime.

where as in  adpatch we just apply patch most of the times by bringing down applications or in hot patch mode.



4)How to change apps user password in R12.2.4


Important Note: These steps must be carried out on the run file system.

1. Shut down the application tier services using the

$INST_TOP/admin/scripts/adstpall.sh

2. Change the APPLSYS password.

FNDCPASS apps/<existing apps passwd>  0 Y system/<system password> SYSTEM APPLSYS <new apps passwd>

FNDCPASS apps/apps 0 Y system/manager SYSTEM APPLSYS newpasswd

3. Start AdminServer using the $INST_TOP/admin/scripts/adadminsrvctl.sh
Note:Don't start any other application tier services.

4. Change the "apps" password in WLS Datasource as follows:
Log in to WLS Administration Console. (http:/krishna.appsdba.com:7002/console)

Click Lock & Edit in Change Center.
In the Domain Structure tree, expand Services, then select Data Sources.
On the “Summary of JDBC Data Sources” page, select EBSDataSource
On the “Settings for EBSDataSource” page, select the Connection Pool tab.
Enter the new password in the “Password” field.
Enter the new password in the “Confirm Password” field.
Click Save.

Check whether you are able to connect to db using apps
sqlplus apps/<newpassword> from application tier.

Before Starting all the services. Run Autoconfig.
cd $ADMIN_SCRIPTS_HOME
sh adautocfg.sh

Now start the services.
Start all the application tier services using the
$INST_TOP/admin/scripts/adstrtal.sh script.

 

Thanks

srini