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  1. #1
    Join Date
    Sep 2012
    Posts
    177

    Unanswered: Doubt in the tablespaces.

    Hi all,

    In our setup db2V9.7 with fixpack 4

    Currently setup the testing environment..

    Contains nearly 270 tables, creating individual tablespaces for the tables it means 270 tablespaces.

    For the performance level need to create temporary tablespaces?

    Thanks,
    laxman..

  2. #2
    Join Date
    May 2003
    Location
    USA
    Posts
    5,737
    With DB2 LUW (unlike DB2 z/OS) you do not need one table per tablespace. Tables should be assigned to tablespaces based on bufferpool configuration, since bufferpools are assigned to tablespaces. This applies if you have more than one bufferpool. Generally, it is good to put indexes in a different tablespace than data, so that you can have a different bufferpool for indexes.

    You must have at least one system temporary tablespace, preferably SMS. This should have been created by default when the database was created. In some cases you may need a system temporary tablespace with a larger page size (32K) if a query returns a select list wider than your default page size and if DB2 needs to spool the result set to a system temporary tablespace.
    M. A. Feldman
    IBM Certified DBA on DB2 for Linux, UNIX, and Windows
    IBM Certified DBA on DB2 for z/OS and OS/390

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