RAC question
DBAsupport.com Forums - Powered by vBulletin
Results 1 to 7 of 7

Thread: RAC question

  1. #1
    Join Date
    May 2001
    Posts
    73

    RAC question

    I am new to RAC implementation and have some questions.
    Is there anyway I can reduce the "Brown out" period? The browning period is when the application experiences delay in response from the RAC database because surviving instance remasters the resources of the failed instance and perform recovery.
    Have anybody experienced this brown out (application experiencing delay) period in RAC environment? Your responses will be of great help.

    Thanks
    OCP 7.3,8.0,8i,9i

  2. #2
    Join Date
    Sep 2002
    Location
    England
    Posts
    7,331
    how long are you waiting for that to happen?

  3. #3
    Join Date
    May 2001
    Posts
    73

    Rac-question

    "how long are you waiting for that to happen?"
    We are still in the process of building RAC and haven't tested yet.I am trying to find out if anybody had experienced this lag time and whats the average time was?
    OCP 7.3,8.0,8i,9i

  4. #4
    Join Date
    Sep 2002
    Location
    England
    Posts
    7,331
    depends on your mttr settings

  5. #5
    Join Date
    May 2001
    Posts
    73

    Rac-question

    So we can control the response time by setting "FAST_START_MTTR_TARGET". Our business requirement is that the response time should not exceed more than 5 secs.I know setting too low value is a performance overhead ...lot of disk IOs.What do you think the average value for this parmeter?

    Thanks for your response.
    OCP 7.3,8.0,8i,9i

  6. #6
    Join Date
    Sep 2002
    Location
    England
    Posts
    7,331
    well how about when you set it up, you TEST it to see what is good for you

  7. #7
    Join Date
    May 2001
    Posts
    73
    Thanks. That is what I am going to do once I setup my RAC environment.But In mean time I am trying to find out if any body had experienced this in their RAC environments.
    OCP 7.3,8.0,8i,9i

Posting Permissions

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



Click Here to Expand Forum to Full Width