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  • undo文件丢失或损坏

     

    startup mount

    cp +DATA/ora11g/datafile/undotbs1.dbf

    alter database rename file

    '+DATA/ora11g/datafile/undotbs1.258.833721555' to '+DATA/ora11g/datafile/undotbs1.dbf';

    select file#,name from v$datafile;

    recover datafile 3;

    alter database open;

    ----------------------------------------------------------------------------------------------------------------------------------

    示例

    SYS@ora11g>startup

    ORACLE instance started.

    Total System Global Area  830930944 bytes

    Fixed Size                  2231048 bytes

    Variable Size             616563960 bytes

    Database Buffers          205520896 bytes

    Redo Buffers                6615040 bytes

    Database mounted.

    ORA-01157: cannot identify/lock data file 3 - see DBWR trace file

    ORA-01110: data file 3: '+DATA/ora11g/datafile/undotbs1.258.833721555'

    cp +DATA/ora11g/datafile/undotbs1.dbf

    SYS@ora11g>alter database rename file '+DATA/ora11g/datafile/undotbs1.258.833721555' to '+DATA/ora11g/datafile/undotbs1.dbf';

    Database altered.

    SYS@ora11g>select file#,name from v$datafile;

         FILE# NAME

    ---------- ---------------------

             1 +DATA/ora11g/datafile

               /system.256.833721555

             2 +DATA/ora11g/datafile

               /sysaux.257.833721555

             3 +DATA/ora11g/datafile

               /undotbs1.dbf

             4 +DATA/ora11g/datafile

               /users.259.833721555

             5 +DATA/ora11g/datafile

               /example.269.83372171

               1

    SYS@ora11g>recover datafile 3;

    Media recovery complete.

    SYS@ora11g>alter database open;

    Database altered.

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  • 原文地址:https://www.cnblogs.com/wwxbi/p/4216759.html
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