What Happens during adop prepare Phase?

The online patching cycle in R12.2  which uses ADOP  utility applies patch in 5 Phases
The phases are

PREPARE
APPLY
FINALIZE
CUTOVER
CLEANUP

PREPARE PHASE:

1)Prepares the Filesystem

During Prepare phase,RUN and PATCH filesystems are synchronized.By Default, Synchronization is done in incremental mode.
Full Synchronization is also available, if needed.

Changing APPS Password in R12.2

APPS Password in R12.2 can be changed either using AFPASSWD or FNDCPASSS utility. AFPASSWD is an enhancement to FNDCPASS.
To change APPS password , follow the below steps

1. Shut down MT Services

2.Use the syntax below to change password.

$AFPASSWD -c apps -s APPLSYS

Sample Output: Enter the ORACLE password of Application Object Library ‘APPSUSER’:
Connected successfully to APPS.
Enter the password for your ‘SYSTEM’ ORACLE schema:
Connected successfully to SYSTEM.  Working…
Enter new password for user:
Verify new password for user:
Working…
AFPASSWD completed successfully.

Note that, to change APPS password we need to give APPLSYS username in AFPASSWD syntax.
APPLSYS and APPS share the same password. Changing APPLSYS password using AFPASSWD utility changes APPS Password also.

3. After the password is changed, start only adminserver on RUN filesystem  using the script adadminsrvctl.sh.

Update the “apps” password in WLS Datasource as follows:
Log in to WLS Administration 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.
Click Activate Changes in Change Center.

4. Start all the application services using adstrtal.sh

How to Check Patch Applied Status in Oracle Applications?

R11i,12.0.x,12.1.x
=============

From Oracle Applications Release 11i to 12.1.x, Patch application Status can be queried from ad_bugs or ad_applied_patches tables

Query to check whether patch is applied on a instance.

SQL>select bug_number,creation_date,last_update_date from apps.ad_bugs where bug_number='&patchnum';

SQL> select PATCH_NAME,CREATION_DATE from apps.ad_applied_patches where PATCH_NAME='&patchnum';

What is difference between above two Queries?


Suppose, we applied a patch which has multiple bugfixes.The details of all bugs fixed by the patch are listed in ad_bugs table.
In Contrast,ad_applied_patches table give info only about the patches which are applied through adpatch utility.


R12.2
=====

From Release 12.2, Online Patching utility(adop) is used for Patching application Filesystem.

Querying the data from ad_bugs or ad_applied_patches tables may not give correct information.Because, online patching can be aborted anytime prior to Cutover Phase.
ad_bugs or ad_applied_patches tables may contain entries for patches which are started through adop and later aborted.

The below query gives accurate Information about Patch Applied Status in R12.2

select AD_PATCH.IS_PATCH_APPLIED(\'$release\',\'$appltop_id\',\'$patch_no\',\'$language\') from dual;

example sql:
SELECT adb.bug_number,ad_patch.is_patch_applied('11i', 1045, adb.bug_number)
FROM ad_bugs adb
WHERE adb.bug_number in (22498647);

or for single app tier installations:
select ad_patch.is_patch_applied('R12',-1,22498647) from dual;

Sample Output:

EXPLICIT = applied
NOT APPLIED = not applied / aborted


Database
=========

Login to Database node as the database os user

Set environment using commands below

$export ORACLE_HOME=/u01/app/oracle/product/112

$export PATH=$PATH:$ORACLE_HOME/Opatch

$which opatch
==>It should give output like /u01/app/oracle/product/112/Opatch

$opatch lsinventory -invPtrLoc $ORACLE_HOME/oraInst.loc

== This gives list of all patches applied to the ORACLE_HOME


$opatch lsinventory -invPtrLoc $ORACLE_HOME/oraInst.loc|grep 988765


==> To check if a particular patch is applied to the ORACLE_HOME

R12.2 Filesystem Layout

• File System 1 (FS1)--Stores a complete copy of all  Applications and Middle Tier code
• File System 2 (FS2)--Stores a complete copy of all Applications and Middle Tier code 
• File System Non-Editioned (FS_ NE)--Stores data that is written or read from the file system,Report Outputs,Log Files etc.

FS1 and FS2 Rotate Run and Patch Designation

How to Put Concurrent Requests in Hold Status?

During some scheduled maintenance activities, oracle apps database administrator would require to keep the Pending Jobs on Hold before bounce and release them after the scheduled activity.
This process help to bring down Concurrent Manager quickly and the pending jobs are preserved for running after the maintenance is complete.


1) Create table apps.conc_req_on_hold as select * from fnd_Concurrent_requests where PHASE_CODE='P' and hold_flag='N';
2) select count(*) from apps.conc_req_on_hold
3) update fnd_Concurrent_requests set hold_flag='Y' where PHASE_CODE='P' and hold_flag='N' and request_id in (select request_id from apps.conc_req_on_hold);

NOTE: You have to commit if select & update are same number of records. Otherwise rollback and try again till the numbers are same

4) Commit;

To Release hold on Concurrent Requests patching, run the below sql :

5) update fnd_Concurrent_requests set hold_flag='N' where request_id in (select request_id from apps.conc_req_on_hold);

6)Commit the changes

 commit;