Löschen alter Tape-Drives (sbt) Backups aus dem RMAN Catalog eine

connect to Database and RMAN Catalog

rman target / catalog rman/rman@rman

Allocale Maintenance-Device to clean old backups from catalog

allocate channel for maintenance device type sbt parms 'SBT_LIBRARY=oracle.disksbt, ENV=(BACKUP_DIR=/tmp)';

Crosschek with “Fake” sbt and delete old Backups from catalog

crosscheck backup;
crosscheck archivelog all;
delete noprompt force expired backup;
delete noprompt force obsolete;