The database instance’s operation status could not be determined. This means the validity of the DBM commands can no longer be determined.
Check the database processes using the operating system tools. Try to connect to the database through a database instance (for example, SQL Studio). If this succeeds, the database instance has the operation status ONLINE, and is ready for (maybe limited) use.
Use some of the other options available, for example, log files, to check the status of the database instance. Please contact Support, if necessary.
If your applications or users can no longer connect to the database instance, you should make sure the database instance has a proper status by restarting it.