Issue due to OPP shutdown was abnormal. Showing Pending state in Internal Manager.

From backend updated all the pending request to completed for Internal Manager.

Then took complete CM bounce.

Ran CMCLEAN.

After above action plan issue got resolved.

Thanks,

Issue due to SQLNET.ORA file has tcp_validate_nodes enables, after disabled it it came up fine.

This issue can be because of many reasons as documented in Doc ID 555565.1

Thanks,

ORA-27271: szingroup: group lookup failure

In one of clone instance, we found after OS bounce oracle user group got changed.

Fixed the OS issue using usermod command.

Still issue was coming so we did oracle home clone and that fixed the issue, we able to start the database.

Thanks,

Database , Application and Fusion Technology