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RE: PeopleSoft DBA Forum Kernel Parameters

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  • David Kurtz
    As far as Tuxedo is concerned, the only kernel parameters you need to worry about changing are those relating to the message queues Tuxedo only uses 3 shared
    Message 1 of 7 , Feb 1, 2007
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      As far as Tuxedo is concerned, the only kernel parameters you need to worry about changing are those relating to the message queues
       
      Tuxedo only uses 3 shared memory segment per domain, of which the Bulletin Board accounts for most of the size.  You simply need sufficent room for the BBs in all domains.  I've never had to increase those parameters.
       
      You need to ensure that you have the ability to create sufficient message queues and also that
       
      MSGMNI (number of message queues) * MSGMNB (message queue size) >= MSGSEG (number of message segments) * MSGSSZ (message segment size)
       

      regards
      _________________________
      David Kurtz
      Go-Faster Consultancy Ltd.
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      -----Original Message-----
      From: psftdba@yahoogroups.com [mailto:psftdba@yahoogroups.com]On Behalf Of magainps
      Sent: 31 January 2007 14:32
      To: psftdba@yahoogroups.com
      Subject: PeopleSoft DBA Forum Kernel Parameters

      David,

      As per your suggestion, MSGMAX should be the max message size
      preferably it should be 256KB and max queue size that is MSGMNB should
      be the two times of the message size...can you also suggest the way to
      calculate the other parameters value such as MSGSEG,
      MSGTQL,SEMMAP, SEMMNI,SEMMNU, SEMUME,SEMMSL, SHMMIN,SHMMNI, SHMSEG.

      Formula for calculating the SEMMNI is SEMMNS=SEMMNI* SEMMSL, its also
      been suggested to check using boot -c command on tmadmin but for
      SEMMNI it is showing A+1 which is bit confusing..

      chaps

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