Stop TFA before applying the patches...

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During the apply of RU patch on Oracle 12.2 opatchauto apply was failing with below errors.
Environment was single instance ASM standby database.
 Execution of [OPatchAutoBinaryAction] patch action failed, check log for more details. Failures:  
 Patch Target : racadrdb1->/u01/app/oracle/product/12.2.0/dbhome_1 Type[sidb]  
 Details: [  
 ---------------------------Patching Failed---------------------------------  
 Command execution failed during patching in home: /u01/app/oracle/product/12.2.0/dbhome_1, host: racadrdb1.  
 Command failed: /u01/app/oracle/product/12.2.0/dbhome_1/OPatch/opatchauto apply /tmp/JAN2019/28828733 -oh /u01/app/oracle/product/12.2.0/dbhome_1 -target_type oracle_database -binary -invPtrLoc /u01/app/12.2.0.1/grid12c/grid/oraInst.loc -jre /u01/app/12.2.0.1/grid12c/grid/OPatch/jre -persistresult /u01/app/oracle/product/12.2.0/dbhome_1/OPatch/auto/dbsessioninfo/sessionresult_racadrdb1_sidb.ser -analyzedresult /u01/app/oracle/product/12.2.0/dbhome_1/OPatch/auto/dbsessioninfo/sessionresult_analyze_racadrdb1_sidb.ser  
 Command failure output:  
 ==Following patches FAILED in apply:  
 Patch: /tmp/JAN2019/28828733/28822515  
 Log: /u01/app/oracle/product/12.2.0/dbhome_1/cfgtoollogs/opatchauto/core/opatch/opatch2019-07-29_15-07-52PM_1.log  
 Reason: Failed during Patching: oracle.opatch.opatchsdk.OPatchException: Prerequisite check "CheckActiveFilesAndExecutables" failed.  
 After fixing the cause of failure Run opatchauto resume  
 ]  
 OPATCHAUTO-68061: The orchestration engine failed.  
 OPATCHAUTO-68061: The orchestration engine failed with return code 1  
 OPATCHAUTO-68061: Check the log for more details.  
 OPatchAuto failed.  
 OPatchauto session completed at Mon Jul 29 15:08:07 2019  
 Time taken to complete the session 1 minute, 33 seconds  
  opatchauto failed with error code 42  
 root@racadrdb1 #
After going through the logs the culprit was external process which was using the Oracle homes.
Finding the processes which are using the homes,
 root@racadrdb1 # fuser -c /u01  
 /u01:   7423ctom  2070tom  
 root@racadrdb1 #
TFA was the process which was operating from Oracle Home
 root@racadrdb1 # ps -ef | grep -i 2070  
   root 11390 11162  0 15:18:49 pts/3    0:00 grep -i 2070  
   root 2070   1  0  Nov 14 ?    2633:02 /u01/app/oracle/tfa/racadrdb1/tfa_home/jre/bin/java -Xms128m -Xmx512m oracle.rat.tfa.TFAMain /u01/app/oracle/tfa/racadrdb1/tfa_                              home  
 root@racadrdb1 #  
 root@racadrdb1 # /u01/app/oracle/tfa/racadrdb1/tfa_home/bin/tfactl status  
 .--------------------------------------------------------------------------------------------------.  
 | Host   | Status of TFA | PID  | Port | Version  | Build ID       | Inventory Status |  
 +-----------+---------------+-------+-------+------------+----------------------+------------------+  
 | racadrdb1 | RUNNING    | 11444 | 51235 | 12.2.1.0.0 | 12210020161122170355 | COMPLETE     |  
 '-----------+---------------+-------+-------+------------+----------------------+------------------'  
 root@racadrdb1 # /u01/app/oracle/tfa/racadrdb1/tfa_home/bin/tfactl stop  
 Stopping TFA from the Command Line  
 TFA is running - Will wait 5 seconds (up to 3 times)  
 TFA is running - Will wait 5 seconds (up to 3 times)  
 TFA is running - Will wait 5 seconds (up to 3 times)  
 TFAmain Force Stopped Successfully  
 TFA Stopped Successfully  
 . . .  
 Successfully stopped TFA..  
 root@racadrdb1 #
Once TFA was stopped, resuming opath successfully applied all patches on both database and grid homes.


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