Patching of the Oracle database is now easy with the use of the OCI console.
In the OCI Console, you can identify a failed update operation by checking the update history of a DB system or individual database. If an update fails, its status will be marked as 'Failed,' along with a brief description of the error. If the error message doesn't provide sufficient information to resolve the issue, you can use the database CLI and log files to gather additional details.
$ cd /opt/oracle/dcs/bin
Use the below command to list the patching jobs on the DBCS VM.
$ dbcli list-jobs
With the unique ID from the list of patching jobs, use the describe-job command to view more details of the job ID.
$ dbcli describe-job -i 890f9340-b6da-4b72-9c29-bd3a99bcc379 -j
The output will show details of the job ID, including the available error message.
The logs are found on /opt/oracle/dcs/log location.
$ cd /opt/oracle/dcs/log