I am trying to update patch 28810696 and facing some issue and getting exit code 73 . following are some logs for issue.
02/12/2020 8:01:32 PM : Installing Server CPU...28810696
02/12/2020 8:01:32 PM : OracleInstaller.InstallerStatusChangeEventArgs
02/12/2020 8:01:32 PM : Stopping service Process Administration Service.
02/12/2020 8:01:32 PM : Waiting for service Process Administration Service to stop.
02/12/2020 8:01:32 PM : Waiting for service OracleServiceADVA to stop.
02/12/2020 8:01:32 PM : Waiting for service OracleOraDb12c_ADVA64TNSListener to stop.
02/12/2020 8:01:32 PM : Waiting for service OracleServiceADVA to stop.
02/12/2020 8:01:32 PM : Waiting for service OracleVssWriterADVA to stop.
02/12/2020 8:01:32 PM : Stopping Additional Services while upgrading Oracle client with the new patch
02/12/2020 8:01:32 PM : Stopping service MSDTC.
02/12/2020 8:01:32 PM : Stopping service W3SVC.
02/12/2020 8:01:32 PM : Waiting for service MSDTC to stop.
02/12/2020 8:01:32 PM : Waiting for service W3SVC to stop.
02/12/2020 8:01:32 PM : Check InstallableCPUs.ClientCPU_x64
02/12/2020 8:01:36 PM : QueryInventory_x64.bat installation ended with Exit code : 0
02/12/2020 8:01:37 PM : Did not find patch 28810696 in log file
02/12/2020 8:01:37 PM : Unable to find registry key: HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE\OraDb12c_ADVAC
02/12/2020 8:01:37 PM : C:\ProgramData\ABB\Oracle\ABB_IM_installcpu_x64_2019_JAN.bat
02/12/2020 8:01:37 PM : C:\ProgramData\ABB\800xA\MediaRepository\Oracle\oracle12_2c\patch64\28810696
02/12/2020 8:02:11 PM : Main thread waiting for installation to be complete
02/12/2020 8:03:11 PM : Main thread waiting for installation to be complete
02/12/2020 8:03:37 PM : Critical Patch Update installation ended with Exit code : 73
02/12/2020 8:03:37 PM : Installation failed. Error while starting the installable. Check the media and try again
02/12/2020 8:03:37 PM : Check InstallableCPUs.ClientCPU_x64
02/12/2020 8:03:41 PM : QueryInventory_x64.bat installation ended with Exit code : 0
02/12/2020 8:03:42 PM : Did not find patch 28810696 in log file
02/12/2020 8:03:42 PM : The installation of the CPU has ended unexpectedly.
02/12/2020 8:03:42 PM : OracleInstaller.InstallerStatusChangeEventArgs
02/12/2020 8:03:42 PM : Installation failed as the required files are missing in the media folder.
Copy media to local folder properly and try again
02/12/2020 8:03:42 PM : Check InstallableCPUs.ClientCPU_x64
02/12/2020 8:03:43 PM : Oracle Component installation failed
02/12/2020 8:03:43 PM : Oracle Installer running with argument : Install Complete
02/12/2020 8:03:43 PM : Oracle Installer Session : End