EBS oracle production environment database backup script

In the EBS oracle production environment, the database backup script is saved as the sh script respectively below. The first one is that the backup speed of the compressed backup is extremely slow, and it takes 10 hours to GB, however, after the backup, only the original 1/8 space [python] rman target/nocatalog log =/u1/data/bak _ 'date + % m % d % H % m' will be used '. log <EOF run {configure device type disk parallelism 1; configure channel 1 device type disk format = '/u1/data/fu1% u. % P' maxpiecesize 4G; configure controlfile autobackup on; configure controlfile autobackup format for device type disk to '/finrm An/data/% F. bck '; backup as compressed backupset full database; SQL 'alter system archive log exist';} exit the second is that the backup without compression is fast, however, the occupied space is basically the sum of the original data files [python] rman target/nocatalog log =/u01data/bak _ 'date + % m % d % H % M '. log <EOF run {configure device type disk parallelism 1; configure channel 1 device type disk format = '/u01/data/fu1% u. % P' maxpiecesize 4G; configure controlfile autobackup on; configure Controlfile autobackup format for device type disk to '/u01/data/% F. bck '; backup database; SQL 'alter system archive log current';} exit these two scripts can be used directly on your own database.