alter database add logfile group 4 '/home/oracle/app/oracle/oradata/soc/redo04.log' size 500M;
alter database add logfile group 5 '/home/oracle/app/oracle/oradata/soc/redo05.log' size 500M;
alter database add logfile group 6 '/home/oracle/app/oracle/oradata/soc/redo06.log' size 500M;
切换到过渡redo
alter system switch logfile;
查看是否切换到过渡的redo
select group#,bytes/1024/1024,status from v$log;
alter database drop logfile group 1;
alter database drop logfile group 2;
alter database drop logfile group 3;
通过操作系统删除老的redo01.log、redo02.log、redo03.log
rm -rf redo01.log、redo02.log、redo03.log
重建redo01.log、redo02.log、redo03.log
alter database add logfile group 1 '/home/oracle/app/oracle/oradata/soc/redo01.log' size 500M;
alter database add logfile group 2 '/home/oracle/app/oracle/oradata/soc/redo02.log' size 500M;
alter database add logfile group 3 '/home/oracle/app/oracle/oradata/soc/redo03.log' size 500M;
切换到新建的redo
alter system switch logfile;
查看是否切换到新建的redo
select group#,status from v$log;
删除作为中间过渡的redo alter database drop logfile group 4; alter database drop logfile group 5; alter database drop logfile group 6; 通过操作系统删除老的redo04.log、redo05.log、redo06.log rm -rf redo04.log、redo05.log、redo06.log
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