What Happens during adop cutover Phase?

Cutover Phase Requires a brief downtime.

Following activities occur during Cutover:

+Users are logged off the system
+Finalize is run as part of cutover -if not run earlier in adop cycle
+Cutover phase cancels ADZPPATCH Concurrent Program
+Stops all Services on RUN and PATCH editions , switches filesystem and starts services on new RUN FS
+Flipping snapshots in run and patch editions.
+Users are brought back online on the patched system 

Environment is changed after cutover. Need to Re-source the env, for performing any actions after cutover.

Syntax:

$ adop phase=cutover

Multi-node Considerations
========================
By default cutover is invoked automatically on remote nodes.
If you want cutover individually:      
1. First node the cutover should be:           
$ adop phase=cutover allnodes=no       
2. For all other nodes you should do:        
$ adop phase=cutover allnodes=no action=nodb           
 * nodb because db work is already done


Cutover Parameters:
===================

mtrestart :Specifies whether or not to start Mid-Tier services at end of cutover, it allows you to perform some additional maintenance operations in the system before bringing it up.        - Takes values "yes" or "no".        - Default: yes
allnodes : Specifies whether or not to run on all the nodes.        - Takes values "yes" or "no".        - Default: yes
action: Specifies whether or not to take database action        - Takes values "db" or "nodb"        - Default: db

What is the difference between dbtechstack,dbtier and dbconfig modes in Cloning?

While Cloning Oracle Applications, adcgclone can be executed in 3 Modes on Database node.


1)perl adcfgclone.pl dbTier

 It configures the ORACLE_HOME on the target database node and  recreate the controlfiles.
 This is used in case of standby database/hot backups.   


2)perl adcfgclone.pl dbTechStack 

It configures the ORACLE_HOME on the target database tier node only. Relink the oracle home.

The below steps has to be performed manually
1. Create the Target Database control files.
2. Start the Target System Database in open mode
3. Run the library update script against the Database
cd $RDBMS_ORACLE_HOME/appsutil/install/[CONTEXT NAME]
sqlplus "/ as sysdba" @adupdlib.sql [libext]
 Where [libext] should be set to 'sl' for HP-UX, 'so' for any other UNIX platform, 
or 'dll' for Windows.

3)perl adcfgclone.pl dbconfig

It configures the database with context file. Database must be open while running adcfgclone in dbconfig mode.
e.g 
cd $RDBMS_ORACLE_HOME/appsutil/clone/bin
perl adcfgclone.pl dbconfig <Context_file>

Where Target Context File is:
$RDBMS_ORACLE_HOME/appsutil/<SID_HOSTNAME>.xml

What are the daily activities of Oracle Applications DBA?

1. Maintaining Oracle Application File System and Database using AD Utilities.
2. Starting, stopping and troubleshooting issues related to Application server components.
3. Using adadmin to relink executables, generate forms/reports,generate jar files, compile/validate APPS schema.
4. Analyzing patch pre-requisites and Applying the Patches using AD Patch Utility on Application file System and Technology Stack.
5. Applying Mini Packs, Family Packs, Maintenance Pack and Rollup patches.
6. Applying database patches using opatch utility and troubleshooting issues related to OPatch.
7. System administration activities like creating users, assigning Responsibilities, defining custom managers.
8. Changing configuration files as per the requirement.
9. Changing APPS password and Application database users’ password for security.
10. Performing Healthchecks.
11. Splicing off-cycle products using adsplice utility.
12. Cloning of Oracle Applications 11i from Production to Test Instance.
13. Taking backups- physical, logical, RMAN and performing Restore, Recovery.
14. Troubleshooting issues related to concurrent managers.
15. Managing System Configuration using Autoconfig.
16. Modifying initialization parameters as per the requirement-PFILE AND SPFILE.
17. Reorganization of tables that are fragmented.
18. Creating users and assigning appropriate roles, privileges.
19. Managing tablespaces and data files.
20. Monitoring alert log file.
21. Troubleshooting ORA- errors.
22. Analyzing AWR reports.