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Thread: ORA-00600 and db verify

  1. #1
    Join Date
    Jul 2001
    Posts
    15
    Hi there,

    I'm using 8.1.6 on Linux. I got "ORA-00600 : internal error code, arguments: [6122], [0], [58], [0], [], [], [], []" when inserting data into a table. I then did dbverify with all the datafiles related to this table and found that the 2 index files in the index tablespace each contains one failed page. Finally I was able to figure out which index was causing the problem. After removing and recreating the index, I was able to insert data without getting the ORA 600 error. But when I did dbverify with the 2 index files, I got the exact same failed pages again! The error msg of one file is:

    **** row 60: key out of order
    ---- end index block validation
    Page 201718 failed with check code 6401

    The error msg of the other file:

    **** actual rows locked by itl 3 = 12 != # in trans. header = 70
    ---- end index block validation
    Page 77152 failed with check code 6401

    Should I do something about it or should I ignore it? Please help.

    Thanks!

    Tianhua

  2. #2
    Join Date
    Jun 2001
    Location
    Helsinki. Finland
    Posts
    3,938
    Is the table index organized? Sometimes, after parallel creation of a secondary index on an IOT, index key could be out of order. Oracle's workaround is creating the index sequentially.



  3. #3
    Join Date
    Jul 2001
    Posts
    15
    Thanks Julian!

    The table is not IOT, the index is a regular B tree index.

    Tianhua

  4. #4
    Join Date
    Jun 2001
    Location
    Helsinki. Finland
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    Did recreating the index help?

  5. #5
    Join Date
    Jul 2001
    Posts
    15
    Yes. I no longer get ORA 600 error after recreating the index. But when I dbverify the index files I still got the same error (see my original post). I also did a full db export afterwards and didn't get any error. So the data should be fine. Maybe when I dropped the index, the DATA itself was not physically cleaned from the datafile, and it will be cleaned later when the space is needed??

  6. #6
    Join Date
    Jun 2001
    Location
    Helsinki. Finland
    Posts
    3,938
    How did you recreate the index, with rebuild or with drop and create? It is important not to rebuild (a non-partitioned) corrupt index with an "ALTER INDEX INDEX_NAME REBUILD". Thus you just build the new index from the existing index segment, which contains a corrupt block.

  7. #7
    Join Date
    Jul 2001
    Posts
    15
    You are right. I tried to rebuild first and got ora 600 error. So I dropped the index and recreated it.

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