Oracle 10G RAC - control_files修改后无法启库

10G RAC中修改了参数control_files='+DATA/jtprod/control101.ctl,+DATA/jtprod/control103.ctl,+DATA/jtprod/control103.ctl,+RECOVERY/jtprod/control104.ctl'导致RAC实例无法启动(startup nomount无法启动),显示该参数修改有问题,读取失败.

(1)创建一个临时pfile /home/oracle/pfileJTODS.ora

[oracle@vmrac1 ~]$ less pfileJTODS.ora

*.db_name='JTODS'

*.sga_target=285212672

含参数db_name和sga_target即可.

(2)启动JTODS1至nomount状态,使用创建的pfile.

export ORACLE_SID=JTODS

SQL>startup nomount pfile='/home/oracle/pfileJTODS.ora';

(3)到备份集中寻找spfile

export ORACLE_SID=+ASM1

RMAN> restore spfile from '+RECOVERY/JTODS/BACKUPSET/2012_01_03/ncsnf0_TAG20120103T214641_0.266.771630459';

Starting restore at 04-JAN-12

using channel ORA_DISK_1

channel ORA_DISK_1: autobackup found: +RECOVERY/JTODS/BACKUPSET/2012_01_03/ncsnf0_TAG20120103T214641_0.266.771630459

channel ORA_DISK_1: SPFILE restore from autobackup complete

Finished restore at 04-JAN-12

cs表示该备份含有control file和spfile.

(4)此时spfile已经更新,可以正常启动,可以相互创建.

SQL> startup

SQL> cretae pfile='/home/oracle/pfilejtods.ora' from spfile;将恢复回来的spfile创建成最新的pfile.

SQL> create spfile='+data/jtods/spfilejtods.ora' from pfile;如果需要也可以将pfile创建成spfile到ASM上.