data issues
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  1. #1
    Join Date
    Mar 2001
    Location
    south africa
    Posts
    401

    data issues

    hi guys ,

    need advise on the following:

    we have 2 databases db1 and db2 ,we export data from db1 to db2 every day.we use db2 for reporting pupose.

    Now due to various constraints we are planning to truncate data in db1 but we would like to keep the truncated data in db2 and do the updates everyday.(this will be come historical data)

    What is the best way to achieve this. We use 9i release 2 on unix.

    any advise is much appreciated

  2. #2
    Join Date
    Feb 2003
    Location
    Leeds, UK
    Posts
    367
    A new 9i feature CDC (Change Date Capture) may be of interest here (not used it myself; still on 8i):


    http://download-west.oracle.com/docs...0/cdc.htm#1656

  3. #3
    Join Date
    May 2001
    Posts
    736
    can u look into Replication?

  4. #4
    Join Date
    Sep 2001
    Location
    Makati, Philippines
    Posts
    857
    sounds like materialized view will do.

  5. #5
    Join Date
    Mar 2001
    Location
    south africa
    Posts
    401
    thanks guys!!

    We tried replication , it's giving some trouble with lob columns.It's not reliable.

    as for as materlized views i think the refresh automatically refreshes the current table so any data which is not there in db1 will not be in db2 ..right ..or can we have updatable mv's.I will try this

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