EBS 12.2 cloning adcfgclone.pl appsTier fails on Linux 8 when the precloned tar backup is sourced from a Linux 7 environment.

ISSUE: EBS 12.2 adcfgclone.pl appsTier fails on Linux 8 when the precloned tar backup is sourced from a Linux 7 environment.

CAUSE: The Fusion Middleware (FMW) prerequisite check fails because the OS version (oracle-8.10) is not listed as certified. The log at /u01/8045_Iteration/ebiz/fs1/EBSapps/comn/clone/FMW/logs/prereqcheck.log shows that /etc/inittab is missing and the expected OS list includes only older versions like oracle-7, redhat-7, etc.

WORKAROUND TO SOLVE DIRECTLY AT TARGET CLONE SERVER:

1. Update prereq folder which basically resides under /u01/8045_Iteration/ebiz/fs1/EBSapps which is extracted from Tar Backup.
2. Below is the target directory
   /u01/8045_Iteration/ebiz/fs1/EBSapps/comn/clone/prereq/webtier/Scripts/prereq
3. cd /u01/8045_Iteration/ebiz/fs1/EBSapps/comn/clone/prereq/webtier/Scripts
4. mv prereq OFF_TILL_LINUX_7_prereq
5. cp -r /u01/8045_Iteration/prereq .
   
   This updated prereq includes Linux 8 compatibility by adding <OPERATING_SYSTEM> blocks for Oracle and Red Hat Linux 8 with required packages, glibc (≥ 2.17), and kernel parameters.
   
   PERMANENT SOLUTION:
   Apply the patch to Production EBS App Tier .
   
   Unzip the patch zip file into the PATCH_TOP. unzip -d PATCH_TOP p33471111_111190_Generic.zip
   
   Copy the “prereq” directory from the patch and replace /webtier/inventory/Scripts on both the Run and Patch filesystems of the 12.2 environment.
   
   Unzip the patch zip file into the PATCH_TOP
   cd /u01/8045_Iteration
   unzip p33471111_111190_Generic.zip
   This will deliver prereq folder with updated linux 8 supported piece of code
   
   cd /u01/8045_Iteration/ebiz/FMW_Home/webtier/inventory/Scripts
   mv prereq OFF_TILL_LINUX_7_prereq
   cp -r /u01/8045_Iteration/prereq .
   
   cd $ADMIN_SCRIPTS_HOME
   perl adpreclone.pl appsTier
   
   Create new Precloned Tar Backup of /u01/Prod/ebiz/fs1/EBSapps ( From Linux 7 Production ). transfer and extract to your target linux 8 Server.