Oracle Apps R12.2 Online patching

For 12.2 patching have to use 'ADOP' utility instead of 'ADADMIN'.
'ADOP' is the new ad utility given by Oracle for patching the Oracle Apps R12.2 environments.

Application tier technology patches are applied to the patch file system and the changes are propagated to the run file system as part of an Online Patching cycle

Steps for Online patching

1. Download any required technology patches and unzip them into the $NE_BASE/EBSapps/patch directory.

2. Prepare for patching

$ . <EBS_ROOT>/EBSapps.env
$ adop phase=prepare

3. Apply Technology patches

$ adop phase=apply patches=<patch number>

4. Finalize patch application

$ adop phase=finalize

5. Perform cutover

$ adop phase=cutover

6. Cleanup obsolete objects

$ . <EBS_ROOT>/EBSapps.env run
$ adop phase=cleanup

7. Synchronize the technology level between patch and run file systems

$ adop phase=fs_clone

Online Patching Cycle

Reference : Oracle E-Business Suite 12.2 Patching Technology Components Guide (Doc ID 1355068.1)

Step by Step Cloning - R12.2

DB Tier Cloning

1. Prepare source node for cloning

cd /u01/PROD/fs1/inst/apps/PROD_oracle/admin/scripts
perl adpreclone.pl appsTier

cd /u01/PROD/db/11.2.0/appsutil/scripts/PROD_oracle
perl adpreclone.pl dbTier

2. Shutdown Application and DB

cd /u01/PROD/fs1/inst/apps/PROD_oracle/admin/scripts
./adstpall.sh 

sqlplus / as sysdba
shutdown immediate; 

3. Copy db directory from source to target

scp -r /u01/PROD/db <targetIP>:/u01/DEV/

4. Set permission for db filesystem

chmod -R 775 /u01/DEV/db
chown -R oracle:dba u01/DEV/db

5. Switch user who own the db binary file system

su - oracle

6. Configure target DB Tier

cd /u01/DEV/db/11.2.0/appsutil/clone/bin
perl adcfgclone.pl dbTier

Apps Tier Cloning

1. Create following directories on target host

mkdir /u01/DEV/fs1 -p
mkdir /u01/DEV/fs2 -p
mkdir /u01/DEV/fs_ne -p

2. Copy EBSapps directory from source to target (no need to copy FMW_Home and inst Directories)

scp -r /u01/PROD/fs1/EBSapps <targetIP>:/u01/DEV/fs1

3. Set permission for Apps file system

chmod -R 775 /u01/DEV/fs1
chown -R oracle:dba u01/DEV/fs1

4. Switch user who own the db binary file system

su - oracle

5. Configure target run file system

cd /u01/DEV/fs1/EBSapps/comn/clone/bin
perl adcfgclone.pl appsTier

6. After startup target application server, prepare system for patch file system

cd /u01/DEV/fs1/inst/apps/PROD_oracle/admin/scripts
perl adpreclone.pl appsTier

7. Shutdown application Server

cd /u01/DEV/fs1/inst/apps/PROD_oracle/admin/scripts
./adstpall.sh

8. Copy EBSapps directory from run file system to patch file system on target host

cp -r /u01/DEV/fs1/EBSapps /u01/DEV/fs2

9. Configure target patch file system

cd /u01/DEV/fs2/EBSapps/comn/clone/bin
perl adcfgclone.pl appsTier

10. If all goes well, then start application Server

cd /u01/DEV/fs1/inst/apps/PROD_oracle/admin/scripts
./adstrtal.sh

'Host key verification failed' Error when scp from one host to another in linux

Problem

When Try to copy file from one host to another below error occur

[root@backup u01]# scp -r RPM_oel6/ 192.168.22.4:/u01
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that the RSA host key has just been changed.
The fingerprint for the RSA key sent by the remote host is
ea:d6:b9:ac:45:e5:4a:46:ff:71:0b:84:a6:24:de:b2.
Please contact your system administrator.
Add correct host key in /root/.ssh/known_hosts to get rid of this message.
Offending key in /root/.ssh/known_hosts:2
RSA host key for 192.168.22.4 has changed and you have requested strict checking.
Host key verification failed.
lost connection

Solution

Please execute below command and copy again to overcome the issue

sed -i '2d' /root/.ssh/known_hosts 

Where '2d' is line number. If the line number is different then use the same