Ending Mirroring for a Dbspace

When you end mirroring for a dbspace, the database server releases the mirror chunks. These chunks are immediately available for reassignment to other dbspaces. You cannot end mirroring if any of the primary chunks in the dbspace are down. The database server can be in online mode when you end mirroring. Use the onutil ALTER DBSPACE command with the STOP MIRRORING clause to end mirroring.

% onutil
1> alter dbspace dbsp1 stop mirroring