RMAN-06091: no channel allocated for maintenance (of an appropriate type)
While trying to delete obsolete backup, there is error RMAN-06091. This is because no automatic channel is configured for maintenance. S RMAN-03002: failure of delete command at 05/14/2012 07:13:12 RMAN-06091: no channel allocated for maintenance (of an appropriate type) Solution: Allocate channel: RMAN> allocate channel for maintenance type disk; Then: RMAN> delete obsolete device type disk;