备份脚本：

#!/bin/bash
source ~/.bash_profile
rq=`date +%Y%m%d`
rman target / log /datadir/backuplog/fullbackuplog/rmanbackup_${rq}.log append<<EOF
run{
ALLOCATE CHANNEL ch1 TYPE disk;
ALLOCATE CHANNEL ch2 TYPE disk;
BACKUP INCREMENTAL LEVEL 0 TAG "DB0" DATABASE FORMAT "/back/DB_0_%T%U.bkp";
CROSSCHECK ARCHIVELOG ALL;
DELETE NOPROMPT EXPIRED ARCHIVELOG ALL;
sql "alter system archive log current";
backup archivelog all format "/back/arch_%T%U.arc";

delete noprompt backup of archivelog until time "sysdate-15";（不生效）
delete noprompt archivelog all completed before 'sysdate-3';（不生效）

backup current controlfile format "/back/ctl_%T%U.ctl";
CROSSCHECK BACKUP;
CROSSCHECK backupset;
DELETE NOPROMPT EXPIRED BACKUP;
DELETE NOPROMPT EXPIRED BACKUPSET;
REPORT OBSOLETE;
delete NOPROMPT obsolete device type disk;
RELEASE CHANNEL ch1;
RELEASE CHANNEL ch2;
}
exit
EOF