undo损坏恢复–无事务

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标题:undo损坏恢复–无事务

作者:惜分飞©版权所有[未经本人同意,不得以任何形式转载,否则有进一步追究法律责任的权利.]

startup nomount;
create pfile=’/tmp/pfile’ from spfile;

修改pfile
*.undo_management=’MANUAL’
*.undo_tablespace=’SYSTEM’
#*.undo_tablespace=’UNDOTBS02′
#*.undo_management=’AUTO’

startup pfile=’/tmp/pfile’ mount;
alter database datafile 2 offline drop;
alter database open;
drop tablespace undotbs1 including contents;
select segment_name,status from dba_rollback_segs;
drop rollback segment “_SYSSMUx”$;
drop tablespace undotbs1 including contents;

CREATE UNDO TABLESPACE UNDOTBS02
DATAFILE ‘/opt/oracle/oradata/xifenfei/UNDOTBS02.dbf’ SIZE 50M
shutdown immediate;

修改pfile
#*.undo_management=’MANUAL’
#*.undo_tablespace=’SYSTEM’
*.undo_tablespace=’UNDOTBS02′
*.undo_management=’AUTO’

startup pfile=’/tmp/pfile’;
create spfile from pfile=’/tmp/pfile’;

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