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Thread: Taking UNDO datafile offline/online

  1. #1
    Join Date
    Jun 2007
    Posts
    11

    Taking UNDO datafile offline/online

    Can someone please tell me what went wrong here .....
    =================================================
    SQL> alter tablespace psapundo
    2 add datafile 'D:\UNDOFILE01' size 1m;

    Tablespace altered.

    SQL> alter database datafile 'D:\UNDOFILE01.DBF' offline;

    Database altered.

    SQL> alter database datafile 'D:\UNDOFILE01.DBF' online;
    alter database datafile 'D:\UNDOFILE01.DBF' online
    *
    ERROR at line 1:
    ORA-01157: cannot identify/lock data file 2 - see DBWR trace file
    ORA-01110: data file 2: 'D:\UNDOFILE01.DBF'

  2. #2
    Join Date
    Nov 2006
    Location
    Sofia
    Posts
    630
    Can u please post the results of
    =================================================
    SQL> alter tablespace psapundo
    2 add datafile 'D:\UNDOFILE01' size 1m;

    Tablespace altered.

    select name,status,CREATION_TIME,CREATION_CHANGE# from v$datafile
    where name='D:\UNDOFILE01'

    SQL> alter database datafile 'D:\UNDOFILE01.DBF' offline;

    Database altered.

    select name,status,CREATION_TIME,CREATION_CHANGE# from v$datafile
    where name='D:\UNDOFILE01'

  3. #3
    Join Date
    Jun 2007
    Posts
    11
    Status Creation_time Creation_change#
    ------- --------- ----------------
    Online 15-jun-07 4009156

  4. #4
    Join Date
    Nov 2006
    Location
    Sofia
    Posts
    630
    What about after u make it offline?

  5. #5
    Join Date
    Jun 2007
    Posts
    11
    Above result , i got it after making it offline

    Status Creation_time Creation_change#
    ------- --------- ----------------
    Online 15-jun-07 4009156

    i wonder is there some exception for UNDO tablespace datafiles

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