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JCo Pool Configuration

Hi,

We defined following parameters for JCO Pool configuration for our webdypro java based application.

Maximum Pool Size:5

Maximum Connections:10

Connection Timeout (msec.):10,0000

Maximum Waiting Time (msec.):30,0000

We are about to run perform load testing with 400 concurrent users. Please suggest me recommended JCO Pool parameters to support load test?? OR Please tell me, if any available OSS notes or good Document for this?

Our Portal Environment: EP 7.0 SP12. IBM J9 VM (AIX 5.3, Oracle 10g)

Thanks & Regards

Srinivas.

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3 Answers

  • Best Answer
    author's profile photo Former Member
    Former Member
    Posted on Oct 13, 2008 at 10:23 AM

    Hi

    unable-to-display-cc-reports

    timeout-during-long-jco-runtimes

    jco-connection-performance-tuninng

    Please go through this forums link

    Hope you will find your answer

    Regards

    Ruturaj

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  • author's profile photo Former Member
    Former Member
    Posted on Oct 11, 2008 at 05:53 PM

    hi,

    this PDF document would be really helpfull.

    https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/documents/a1-8-4/how%20to%20configure%20the%20jco%20destination%20settings.pdf

    i hope u will get solution from this.

    it will guide you how to calculate poolsize and all.

    jayesh talreja

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  • author's profile photo Former Member
    Former Member
    Posted on Oct 11, 2008 at 06:00 PM

    Hi ,

    From SAP Help,

    Maximum Pool Size - Specifies the maximum number of open connections stored in the pool. They can be immediately used by the application.

    Maximum Connections - Specifies the maximum number of connections available in the pool. They can be generated at runtime. If all connections are used and the capacity of the pool is exhausted, the next requested connection is sent to a queue until another connection is closed. The duration of the waiting time in the queue is specifed by the option Maximum Waiting Time. If no connection is closed during this waiting time, an error message appears.If the number of Maximum Connections is higher than the number of Maximum Pool Size, the JCo connections that are not needed are immediately closed.

    Check the following pages to understand the Connection Pool and the JCO Connections in the Content Admin.

    http://help.sap.com/saphelp_nw04/helpdata/en/77/931440a1c32402e10000000a1550b0/frameset.htm

    http://help.sap.com/saphelp_nw04/helpdata/en/35/42e13d82fcfb34e10000000a114084/frameset.htm

    So if you want to open more connections, give a higher value for the Maximum Connection. However, you should give lower value for Maximum Pool. This will ensure that whenever a connection is not used, it will be automatically closed. Also keeping the maximum pool to a lower value avoids consuming too many SAP system resources.

    Hope this is helpful.

    still you can look following links.

    jcoclientconnection-and-pool-size

    problem-with-jco-destinationconnection-pooliing---

    jayesh talreja

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    • Former Member

      Hi,

      Is it possible to use Userid / Password configuration for both the Jco ( application Jco and meta data Jco)..

      We have around 400 concurrent users and it is a custom web dynpro application they would access.

      We need this kind of setup (common user with userid password ) so that we need not create users on R/3 ...

      If soemone could throw some light here on its " feasibility and best practices and Jco pool sizing etc under such scenarios ..would be highly helpful"

      Many Thanks...

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