备库在切换到主库时报错ORA-00344

今天做一下切换，备库出现ORA-00344这个错误

SQL> alter database commit to switchover to primary;
alter database commit to switchover to primary
*
ERROR at line 1:
ORA-00344: unable to re-create online log
'opt/ora10g/racdb/onlinelog/group_1.257.819733349'
ORA-27040: file create error, unable to create file
Linux Error: 2: No such file or directory

查了一下原来是convert的地址设错了

SQL> show parameter log_file

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
log_file_name_convert                string      +RAC_DISK/RACDB/ONLINELOG, opt
                                                /ora10g/racdb/onlinelog

opt前面少了了‘/’

SQL> alter system set log_file_name_convert='+RAC_DISK/RACDB/ONLINELOG','/opt/ora10g/racdb/onlinelog' scope=spfile;    

System altered.

SQL> shutdown immediate
ORA-01109: database not open


Database dismounted.
ORACLE instance shut down.
SQL> startup mount
ORACLE instance started.

Total System Global Area  167772160 bytes
Fixed Size                  1218316 bytes
Variable Size              62916852 bytes
Database Buffers          100663296 bytes
Redo Buffers                2973696 bytes
Database mounted.
SQL> alter database commit to switchover to primary;

Database altered.

成功切换，看来还是不仔细啊，设置的时候要多检查几遍才行