Oracle Solution for Error ora-15091

ORA-15091: operation incompatible with open handle in this session

What triggered the Error:

The current session contained an open handle from the DBMS_DISKGROUP PL/SQL package which precluded performing the command.

What should we do to fix it:

Close the hanlde with DBMS_DISKGROUP.CLOSE() before executing the command, or execute the command in a different session.