Compressing Archivelog

Question

Hi Everyone,
I'm using "BACKUP AS COMPRESSED BACKUPSET INCREMENTAL LEVEL 0" and "LEVEL 1" for full and incremental backups. I also use "BACKUP ARCHIVELOG ALL", is there a way to compress the archivelog backups as well. I do know when the archivelogs as backed up as part of full or incr, they are compressed as the log does indicate the same. I'm on 10.2.0.3.
Part of the incr backup log
Starting backup at 07/18/08 03:03:26
current log archived
using channel ORA_DISK_1
channel ORA_DISK_1: starting compressed archive log backupset
channel ORA_DISK_1: specifying archive log(s) in backup set
input archive log thread=1 sequence=725 recid=607 stamp=660366208
channel ORA_DISK_1: starting piece 1 at 07/18/08 03:03:29
channel ORA_DISK_1: finished piece 1 at 07/18/08 03:03:32Archive log only
RMAN> BACKUP ARCHIVELOG ALL TAG = 'TEST' FORMAT = '/home/oracle/backup_mount/a_%T_%U';
Starting backup at 18-JUL-08
current log archived
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=209 devtype=DISK
channel ORA_DISK_1: starting archive log backupset
channel ORA_DISK_1: specifying archive log(s) in backup set
input archive log thread=1 sequence=737 recid=629 stamp=660413542
channel ORA_DISK_1: starting piece 1 at 18-JUL-08
channel ORA_DISK_1: finished piece 1 at 18-JUL-08
piece handle=/home/oracle/backup_mount/a_20080718_lqjlq737_1_1 tag=TEST comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:00:56
Finished backup at 18-JUL-08

Answer 1

Run the backup as follows:
RMAN> BACKUP AS COMPRESSED BACKUPSET ARCHIVELOG ALL TAG = 'TEST' FORMAT = '/home/oracle/backup_mount/a_%T_%U';