RMAN 报：ORA-19504 ORA-27038

在itpub中看到下面的问题：

oracle
10g

备份脚本如下

run{

allocate channel d1 device type disk
MAXPIECESIZE=100M;

crosscheck archivelog all;

delete noprompt expired archivelog all;

backup full tag '3Gfull' database include current controlfile
format '/vm_svn/rmanback/fullback_%d_%T_s%s_p%p' plus

archivelog format '/vm_svn/rmanback/arch_%d_%T_%s' delete all
input;

delete noprompt obsolete;

}

输出的log

.....

input archive log thread=1 sequence=2174 recid=1631
stamp=734587098

....

input archive log thread=1 sequence=2223 recid=1680
stamp=734671824

channel d1: starting piece 1 at 10-NOV-10

channel d1: finished piece 1 at 10-NOV-10

piece handle=/opt/oracle/rmanback/arch_ORCL_20101110_1544
tag=3GFULL comment=NONE

channel d1: starting piece 2 at 10-NOV-10

released channel: d1

RMAN-00571:
===========================================================

RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS
===============

RMAN-00571:
===========================================================
RMAN-03002: failure of backup plus archivelog
command at 11/10/2010 03:31:26

ORA-19504: failed to create file
"/opt/oracle/rmanback/arch_ORCL_20101110_1544"

ORA-27038: created file already exists

Additional information: 1

报错原因：

脚本中arch_%d_%T_%s没有一个参数指定了唯一值，所以在创建备份集时出现相同的备份集名，所以报错

加上参数 %U 就可以。

%U 代表唯一的文件名