1、处于归档模式。
2、日志文件多工。
3、控制文件多工。(可以不做
但需备份)
RAC中日志文件,不用多工用ASM管理就不用多工了。
单实例下日志文件必须多工,没有ASM去管理。
日志多工
SELECT * FROM v$logfile ORDER BY group#;
SQL> ALTER DATABASE ADD LOGFILE MEMBER '/u01/oracle/oradata/qbjmes/redo1.log' TO GROUP 1;
Database altered.
SQL> ALTER DATABASE ADD LOGFILE MEMBER '/u01/oracle/oradata/qbjmes/redo2.log' TO GROUP 2;
Database altered.
ALTER DATABASE ADD LOGFILE MEMBER '/u01/oracle/oradata/qbjmes/redo3.log' TO GROUP 3;
控制文件多工
SQL> alter system set control_files='/u01/oracle/oradata/qbjmes/control01.ctl,/u01/oracle/oradata/qbjmes/control1.ctl,/u01/oracle/fast_recovery_area/qbjmes/control02.ctl,/u01/oracle/fast_recovery_area/qbjmes/control2.ctl' scope=spfile;
s ~]$ cp /u01/oracle/oradata/qbjmes/control01.ctl /u01/oracle/oradata/qbjmes/control1.ctl
[oracle@qbjmes ~]$ cp /u01/oracle/fast_recovery_area/qbjmes/control02.ctl /u01/oracle/fast_recovery_area/qbjmes/contr
shutdown immediate
startup
1、处于归档模式。
2、日志文件多工。
3、控制文件多工。(可以不做
但需备份)
RAC中日志文件,不用多工用ASM管理就不用多工了。
单实例下日志文件必须多工,没有ASM去管理。
日志多工
SELECT * FROM v$logfile ORDER BY group#;
SQL> ALTER DATABASE ADD LOGFILE MEMBER '/u01/oracle/oradata/qbjmes/redo1.log' TO GROUP 1;
Database altered.
SQL> ALTER DATABASE ADD LOGFILE MEMBER '/u01/oracle/oradata/qbjmes/redo2.log' TO GROUP 2;
Database altered.
ALTER DATABASE ADD LOGFILE MEMBER '/u01/oracle/oradata/qbjmes/redo3.log' TO GROUP 3;
控制文件多工
SQL> alter system set control_files='/u01/oracle/oradata/qbjmes/control01.ctl,/u01/oracle/oradata/qbjmes/control1.ctl,/u01/oracle/fast_recovery_area/qbjmes/control02.ctl,/u01/oracle/fast_recovery_area/qbjmes/control2.ctl' scope=spfile;
s ~]$ cp /u01/oracle/oradata/qbjmes/control01.ctl /u01/oracle/oradata/qbjmes/control1.ctl
[oracle@qbjmes ~]$ cp /u01/oracle/fast_recovery_area/qbjmes/control02.ctl /u01/oracle/fast_recovery_area/qbjmes/contr
shutdown immediate
startup