ORA-01122,ORA-01110:ORA-01200错误处理

http://hi.baidu.com/dbconsole/blog/item/1f46d189832220bb0e244463.html
oracle9i,ORA-01122,ORA-01110:ORA-01200:错误

SQL> startup
ORACLE 例程已经启动。
Total System Global Area  588324464 bytes
Fixed Size                   454256 bytes
Variable Size             293601280 bytes
Database Buffers          293601280 bytes
Redo Buffers                 667648 bytes
数据库装载完毕。
ORA-01122: 数据库文件 2 验证失败
ORA-01110: 数据文件 2: 'D:\ORACLE\ORADATA\JSYADC\UNDOTBS01.DBF'
ORA-01200: 43520的实际文件大小小于46720块的正确大小

主要是由于非正常关机或者磁盘损坏导致undotbs01文件损坏。
修改pfile中undo的相关信息
*.undo_management='MANUAL'
*.undo_tablespace='SYSTEM'
以pfile启动到mount状态

SQL> startup mount pfile='/oracle/p1.ora'
ORACLE instance started.
Total System Global Area 303531576 bytes
Fixed Size                   742968 bytes
Variable Size             285212672 bytes
Database Buffers           16777216 bytes
Redo Buffers                 798720 bytes
Database mounted.
SQL>

查看rollback segments信息。

SQL> select segment_name,tablespace_name,status from dba_rollback_segs;
SEGMENT_NAME                   TABLESPACE_NAME                STATUS

------------------------------ ------------------------------ ----------------
SYSTEM                         SYSTEM                         ONLINE
_SYSSMU1$                      UNDOTBS0                       OFFLINE
_SYSSMU2$                      UNDOTBS0                       OFFLINE
_SYSSMU3$                      UNDOTBS0                       OFFLINE
_SYSSMU4$                      UNDOTBS0                       OFFLINE
_SYSSMU5$                      UNDOTBS0                       OFFLINE
_SYSSMU6$                      UNDOTBS0                       OFFLINE
_SYSSMU7$                      UNDOTBS0                       OFFLINE
_SYSSMU8$                      UNDOTBS0                       OFFLINE
_SYSSMU9$                      UNDOTBS0                       OFFLINE
_SYSSMU10$                     UNDOTBS0                       OFFLINE
SEGMENT_NAME                   TABLESPACE_NAME                STATUS
------------------------------ ------------------------------ ----------------
_SYSSMU11$                     UNDOTBS0                       NEEDS RECOVERY
_SYSSMU12$                     UNDOTBS0                       NEEDS RECOVERY

从这里面可以看到，_SYSSMU11$,_SYSSMU12$这两个数据段need recovery，我们需要通过隐患参数_corrupted_rollback_segments,丢弃这两个段。
在之前的pfile中，增减下列信息
_corrupted_rollback_segments=(_SYSSMU11$,_SYSSMU12$)

SQL> startup restrict pfile='/oracle/p1.ora';
ORACLE instance started.
Total System Global Area 303531576 bytes
Fixed Size                   742968 bytes
Variable Size             285212672 bytes
Database Buffers           16777216 bytes
Redo Buffers                 798720 bytes
Database mounted.
Database opened.
#Drop掉旧的undo表空间
SQL> drop tablespace undotbs0 including contents;
Tablespace dropped.
#建立新的undo表空间
SQL> create undo tablespace undotbs1 datafile '/oracle/oradata/oratest/undotbs1.dbf' size 150M autoextend on;
Tablespace created.
SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL>

修改pfile
*.undo_management='AUTO'
*.undo_tablespace='UNDOTBS1'
并删除_corrupted_rollback_segments=(_SYSSMU11$,_SYSSMU12$)

SQL> startup pfile='/oracle/p1.ora'
ORACLE instance started.
Total System Global Area 303531576 bytes
Fixed Size                   742968 bytes
Variable Size            285212672 bytes
Database Buffers           16777216 bytes
Redo Buffers                 798720 bytes
Database mounted.
Database opened.
SQL> create spfile from pfile='/oracle/p1.ora';
File created.
SQL>