undo表空间

UNDO表空间数据文件切换

1 新建一UNDO表空间

CREATE UNDO TABLESPACE UNDOTBS DATAFILE ‘/dev/vx/rdsk/vgora/lv_undo‘ SIZE 10M AUTOEXTEND ON RETENTION NOGUARANTEE;

2 切换表空间

alter system set undo_tablespace=‘UNDOTBS1‘;

shutdown immediate;

startup

drop tablespace UNDOTBS2 including contents and datafiles;

CREATE UNDO TABLESPACE UNDOTBS1 DATAFILE ‘/dev/vx/rdsk/vgora/lv_undo‘ size 6000M;

alter tablespace UNDOTBS1 add datafile ‘/dev/vx/rdsk/vgora/lv_undo1‘ size 8000M;

alter system set undo_tablespace=‘UNDOTBS1‘;

drop tablespace UNDOTBS including contents and datafiles;

shutdown immediate;

startup