今天用RMAN做全庫備份出現錯誤：

channel ORA_DISK_1: starting piece 1 at 04-FEB-09
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of backup plus archivelog command at 02/04/2009 15:11:08
ORA-19809: limit exceeded for recovery files
ORA-19804: cannot reclaim 52428800 bytes disk space from 2147483648 limit

查看日志：Wed Feb 4 15:10:59 2009
Errors in file /u01/app/oracle/admin/jarod/udump/jarod_ora_1964.trc:
ORA-19815: WARNING: db_recovery_file_dest_size of 2147483648 bytes is 100.00% used, and has 0 remaining bytes available.
************************************************************************
You have following choices to free up space from flash recovery area:
1. Consider changing RMAN RETENTION POLICY. If you are using Data Guard,
then consider changing RMAN ARCHIVELOG DELETION POLICY.
2. Back up files to tertiary device such as tape using RMAN
BACKUP RECOVERY AREA command.
3. Add disk space and increase db_recovery_file_dest_size parameter to
reflect the new space.
4. Delete unnecessary files using RMAN DELETE command. If an operating
system command was used to delete files, then use RMAN CROSSCHECK and
DELETE EXPIRED commands.

問題是在db_recovery_file_dest_size 備份時沒有足夠的空間造成的

為db_recovery_file_dest_size 添加空間：

alter system set db_recovery_file_dest_size=10G scope=both;

oracle數據庫備份出現錯誤：RMAN-03002 ORA-19809 ORA-19804