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

客服小羊 2018-05-23 21:59:12

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

1.问题描述

警告日志报错如下：

Thu Feb 18 01:59:48 2016

Errors in file/u01/PSPROD/oracle/diag/rdbms/psprod/PSPROD1/trace/PSPROD1_ora_45856.trc:

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

Tue Feb 16 01:59:02 2016

Errors in file/u01/PSPROD/oracle/diag/rdbms/psprod/PSPROD1/trace/PSPROD1_ora_88792.trc:

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

2.问题分析

本报错出现于oracle 11.2.0.1.0及以后的版本中，应用于所有平台

仅仅RAC环境会发生，非rac环境不需要考虑这个问题，因为11Gr2控制文件备份机制的改变，集群中的任何实例都要可以写入快照文件。当然这个文件也就要对所有实例可见，所以这个快照文件要设置在共享设备上（asm磁盘组）。

我们现在看一下本机设置：

RMAN> show all;

RMAN configuration parameters for databasewith db_unique_name PSPROD are:

CONFIGURE DATAFILE BACKUP COPIES FOR DEVICETYPE DISK TO 1; # default

CONFIGURE ARCHIVELOG BACKUP COPIES FORDEVICE TYPE DISK TO 1; # default

CONFIGURE MAXSETSIZE TO UNLIMITED;

CONFIGURE ENCRYPTION FOR DATABASE OFF; #default

CONFIGURE ENCRYPTION ALGORITHM 'AES128'; #default

CONFIGURE COMPRESSION ALGORITHM 'BASIC' ASOF RELEASE 'DEFAULT' OPTIMIZE FOR LOAD TRUE ; # default

CONFIGURE ARCHIVELOG DELETION POLICY TONONE; # default

CONFIGURE SNAPSHOTCONTROLFILE NAME TO '/u01/PSPROD/oracle/product/11.2.0.4/dbs/snapcf_PSPROD1.f';# default

RMAN>

由上可见本机是默认的未进行修改过

因此会报245的错误

这里注意下本机报错为ORA-00245，但也可能报ora-245 所以在mos上搜索的时候最好报错内容也搜索下，否则可能找不到

3.解决方案

修改rman备份配置，将控制文件快照定向到共享磁盘组

[sql] view plain copy

RMAN> CONFIGURE SNAPSHOT CONTROLFILE NAME TO '+DATA_ERP/PSPROD/snapcf_PSPROD1.f';
new RMAN configuration parameters:
CONFIGURE SNAPSHOT CONTROLFILE NAME TO '+DATA_ERP/PSPROD/snapcf_PSPROD1.f';
new RMAN configuration parameters are successfully stored
RMAN>

检查修改结果：

RMAN> show all;

RMAN configuration parameters for databasewith db_unique_name PSPROD are:

CONFIGURE RETENTION POLICY TO REDUNDANCY 1;# default

CONFIGURE BACKUP OPTIMIZATION OFF; #default

CONFIGURE DEFAULT DEVICE TYPE TO DISK; #default

CONFIGURE CONTROLFILE AUTOBACKUP ON;

CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FORDEVICE TYPE DISK TO '%F'; # default

CONFIGURE DEVICE TYPE DISK PARALLELISM 5BACKUP TYPE TO BACKUPSET;