Oracle Solution for Error ora-31413

ORA-31413: change set string is currently being advanced

What triggered the Error:

An advance operation is in progress for this change set and we only allow one at a time.

What should we do to fix it:

Since the change set is currently being advanced, the best action is to wait for it to finish advancing. Only one caller at a time can advance the change set. Check for the cause of long running advance operations.