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  1. #1
    Join Date
    Dec 2003

    Lightbulb Unanswered: how to get an lob out of the database


    I'm having a problem with a database (8.0.5) that has a table with a blob field in it. When running daily export, it gives :
    . . exporting table MN1
    EXP-00056: ORACLE error 1555 encountered
    ORA-01555: snapshot too old: rollback segment number with name "" too small
    ORA-22924: snapshot too old

    how can I get the data out of it when export is not working? Other tables with blobs in it, have no problem.

    The data that is in the table is about 500MB big ... and the blob object is in the same tablespace as the other fields and tables of the db-schema.

    Can anyone help me out with this.

  2. #2
    Join Date
    Dec 2003
    nobody an answer for this issue?

  3. #3
    Join Date
    Aug 2003
    Where the Surf Meets the Turf @Del Mar, CA
    Provided Answers: 1
    Educate yourself on ORA-01555 errors by going to
    and doing a keyword search on this error code.
    a) you could try running the export during periods of low change activity
    b) you could try to throw resources at this probem by making rollback bigger
    c) I don't know if this would help but try CONSISTENT=NO
    d) I don't know if this would help but try BUFFER=32000000 DIRECT=YES
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