Oracle Solution for Error ora-01616

ORA-01616: instance string (thread string) is open - cannot disable

What triggered the Error:

The thread is not closed. The last instance to use the thread died leaving the thread open. A thread cannot be disabled until it is closed. It is still required for crash or instance recovery.

What should we do to fix it:

If the database is open, instance recovery should close the thread soon - wait a few minutes. Otherwise open the database - crash recovery will close the thread.