adcfgclone.pl dbTechStack error

In setting up a new Oracle home for a clone, I recently encountered the error:

RC-00110: Fatal: Error occurred while relinking of ApplyDBTechStack

Going into the logfile, $ORACLE_HOME/appsutil/log/$CONTEXT/ApplyDBTechStack_Timestamp.log, ouicli.pl failed during the INSTE8_APPLY phase. Going up higher in the log and looking at the script output, the error message was:

NON-COMPLIANT: /u01/app/oracle/product/19.0.0/dbhome1/oraInst.loc does not point to an inventory inside the current ORACLE_HOME

Unfortunately, this is not the issue (nor is it even related to the actual issue). To find the actual issue, you need to look in your central Oracle inventory (the location can be found in /etc/oraInst.loc in Linux) logs directory. Go into InstallActions-Timestamp and look at the file installActionsTimestamp.log. Looking for ERRORMSG, you will find the actual problem:

INFO: [Oct 23, 2025 8:01:07 AM] ERROR: [Result.addErrorDescription:800] PRVF-7573 : Sufficient swap size is not available on node "host" [Required = 16GB (1.6777216E7KB) ; Found = 7.5GB (7864316.0KB)]
INFO: [Oct 23, 2025 8:01:07 AM] INFO: [Task.perform:994]
TaskSwapSize:Swap Size[CHECK_SWAP_SIZE]:TASK_SUMMARY:FAILED:IGNORABLE:VERIFICATION_FAILED:Total time taken [66 Milliseconds]
ERRORMSG(ebsnewdb): PRVF-7573 : Sufficient swap size is not available on node "host" [Required = 16GB (1.6777216E7KB) ; Found = 7.5GB (7864316.0KB)]

Increasing swap to at least 16GB will resolve the error. This is not the only time that I have encountered misleading error messages around ignorable swap size messages from oui when the installer was embedded in scripts from Oracle. If you see a strange error message, dig into all the associated logs.