Results 1 to 4 of 4
  1. #1
    Join Date
    Jun 2007
    Posts
    10

    Unanswered: multiple size of db_block

    using oracle 10g on solaris.
    I have a query with lots of join and some table scan with lob object.
    when i execute that with 8K block size..then after executing 3 times ,I got physical read 0.

    but I moved them in a 16K block size.and physical read is not reduced. its always 23000 to 25000.

    so ..what can I do to reduce the physical read?

  2. #2
    Join Date
    Jan 2003
    Location
    Massachusetts
    Posts
    5,800
    Provided Answers: 11
    When you moved the data, did you remember to move the index(es) along with the table(s)?

  3. #3
    Join Date
    Aug 2003
    Location
    Where the Surf Meets the Turf @Del Mar, CA
    Posts
    7,776
    Provided Answers: 1
    Last edited by anacedent; 09-26-07 at 11:27.
    You can lead some folks to knowledge, but you can not make them think.
    The average person thinks he's above average!
    For most folks, they don't know, what they don't know.
    Good judgement comes from experience. Experience comes from bad judgement.

  4. #4
    Join Date
    Jun 2007
    Posts
    10
    thanx mcrowley.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •