【经验分享】oracle 11.2.0.3版本以上的RAC数据库备份时，偶尔出现ORA-00245的报错。

问题现象：ORA-00245: control file backup failed; target is likely on a local file system

解决办法：

1. Check the snapshot controlfile location:

RMAN> show snapshot controlfile name;

2. Configure the snapshot controlfile to a shared disk:

RMAN> CONFIGURE SNAPSHOT CONTROLFILE NAME TO '/snapcf_.f';

Or in case of ASM use

RMAN> CONFIGURE SNAPSHOT CONTROLFILE NAME TO '+/snapcf_.f';