Avoid RMAN-08137

I used the below script to delete the archive logs older than 30 mins so that the recent archivelogs will be available to the standby and over come the below error messages:

RMAN-08137: WARNING: archive log not deleted as it is still needed


RUN{
ALLOCATE CHANNEL ch01 TYPE DISK FORMAT '/u0001/${ORACLE_SID}/u01/%d_${BACKUP_TYPE}_%M_%D_%Y_%s_%p_%t';

BACKUP
TAG 'arch_${TODAY}_${TIME}'
FILESPERSET ${ARCHIVE_PERSET}
ARCHIVELOG ALL;
DELETE force noprompt archivelog until time '(sysdate -1/30)' backed up 1 times to device type disk;
RELEASE CHANNEL ch01;

}
EOF