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Thread: lob data replcation

  1. #1
    Join Date
    May 2003
    Location
    Kathmandu, Nepal
    Posts
    16

    lob data replcation

    Hi,
    I am planning to setup a single master- read only snapshot replcation where i will be using LOBs (BLOB, CLOB) data types. We already have a single master site and 21 read-only snapshot sites running on Oracle 8.1.5/NT boxes.
    I am wondering whether i would hit any kind of problem in doing so. Any kind of input will be a great help for me.

    Thanks
    Raj Kishore
    Oracle DBA

  2. #2
    Join Date
    Apr 2003
    Location
    South Carolina
    Posts
    148
    I have not had any problems with LOB datatype replication. LONG and LONG RAW datatypes are not supported and will NOT replicate but, LOB's
    work well with both MULTIMASTER and SNAPSHOT replication.

    Gregg

  3. #3
    Join Date
    May 2003
    Location
    Kathmandu, Nepal
    Posts
    16
    Hi Gregg,
    Thanks for the reply. My question is how can you create a snapshot on a table which has a LOB column. As i know i have to execute the command e.g.;
    create snapshot as
    select * from @;
    but it will not be accepted because of LOB column limitation.
    Any help please?

    Thanks
    Raj Kishore
    Oracle DBA

  4. #4
    Join Date
    Apr 2001
    Location
    Brisbane, Queensland, Australia
    Posts
    1,203
    I know under Oracle 8 you couldn't snapshot LOB data, I'm not sure for 8i. I know you can replication via async and sync rep, but not sure about snapshots. You could snapshot WITHOUT the LOB columns, depending if they are required in the snapshot or not.

    Cheers,

    (Another) Greg.
    OCP 8i, 9i DBA
    Brisbane Australia

  5. #5
    Join Date
    May 2001
    Posts
    736
    Absolutely it is possible to have snapshots with LOB columns both in 8.1.6 and 8.1.7 and i don't have idea in 8.1.5.
    When u are using windows why don't u use the Replication administration to create groups both on Master and snapshot site.

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