非法刪除數(shù)據(jù)文件導(dǎo)致數(shù)據(jù)庫不能打開ORA-01122 ORA-01251

今天一同事找我，說他本地的數(shù)據(jù)庫被他誤刪除了文件，導(dǎo)致不能打開，然給看看。
SQL> conn jjw/jjw
ERROR:
ORA-01033: Oracle initialization or shutdown in progress

Warning: You are no longer connected to Oracle.
SQL>-
 

數(shù)據(jù)庫已經(jīng)啟動，但連接報錯。如是，我重啟一下，看報什么錯誤。
SQL> conn /as sysdba
Connected.
SQL> shutdown immediate
ORA-01109: database not open

Database dismounted.
Oracle instance shut down.
SQL> startup
Oracle instance started.
Total System Global Area 1224736768 bytes
Fixed Size                  2020384 bytes
Variable Size             218106848 bytes
Database Buffers          989855744 bytes
Redo Buffers               14753792 bytes
Database mounted.
ORA-01122: database file 10 failed verification check
ORA-01110: data file 10: '/Oracle/database/tabjj_tab.dbf'
ORA-01251: Unknown File Header Version read for file number 10

SQL>
首先，得從數(shù)據(jù)庫中刪除這個有問題的文件。
SQL> startup mount
Oracle instance started.
Total System Global Area 1224736768 bytes
Fixed Size                  2020384 bytes
Variable Size             218106848 bytes
Database Buffers          989855744 bytes
Redo Buffers               14753792 bytes
Database mounted.
SQL> alter database datafile  '/Oracle/database/tabjj_tab.dbf' offline drop;
Database altered.
 
SQL> alter database open;
Database altered.
SQL>
數(shù)據(jù)庫恢復(fù)正常。
 
以上只是測試環(huán)境下的操作，正式系統(tǒng)上，千萬不能這樣隨意刪除文件了。

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