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Re: how to reduce SQL*Net more data to client wait event

From: Anjo Kolk <>
Date: Wed, 21 Aug 2002 12:08:39 -0800
Message-ID: <>


this is "to client", so it is the result of a query (either to many columns or too many rows returned). Large SQL statements would result in "from client" during the Parse phase and if people keep on parsing the same statement, the client side will keep on sending it to the server. Parse once/execute many ....


  Tim, more specifically could large SQL have been passed across   the net ? Stored procedures could help here.

  FWIW.   Mike
    -----Original Message-----
    From: Tim Gorman []     Sent: Wednesday, August 21, 2002 12:03 AM     To: Multiple recipients of list ORACLE-L     Subject: Re: how to reduce SQL*Net more data to client wait event

    Depending on the application, couldn't these large pauses be performance problems in the client program? Not a server tuning issue nor a SQL*Net tuning issue at all? For example, if the client program was pausing a long time between FETCH commands, processing previously fetched data? Or would that just be accounted for under "SQL*Net message from client" events?


      I am tuning a system at a client site and notice lots of waits for SQL*Net more data to client (97%) for a fraction

      of the CPU consumed by the system.

      I know this is not to be characterized as an idle wait event and can yield better performance if we increase

      the packet size.

      The database is Oracle 7.3.4 (SQL Net 2.3). What effect will increasing TDU and SDU have

      on this wait to increase packet size.

      It seems that if we can reduce this wait then we can save lots of time (I Think).

      Will using BEQ protocol help at all.         




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Author: Anjo Kolk

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