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IDMS SP #3 Performance Concerns

  • 1.  IDMS SP #3 Performance Concerns

    Posted 08-18-2006 05:23 AM
    Hello Listers !

    We are a Z/OS 1.4 shop running IDMS-DC with a mix of ADS/O, DC-COBOL,
    CICS COBOL as well as COBOL batch applications.

    We recently implemented IDM SR16 SP #3 on one our production systems and
    have experienced intermittent online performance issues. Displays of
    storage and program pool usage look fine. Buffering is unchanged.
    Storage protect is on as it has always been in order to protect the
    system from misbehaving COBOL apps which our I/S folks seem unwilling or
    unable to fix. Batch activity is present but at normal levels.

    Performance on several other systems running this software is fine.

    The only thing out of the ordinary I can point to is the fact that
    journal reports show a few problem applications doing some extreme
    levels of I/O activity when problems occur. Unfortunately, because
    of local political issues, I can't set system limits at reasonable
    levels to prevent this. I should note we have occasionally seen these
    types of problems on this system in the past when these apps do this
    type of extreme processing.

    Nevertheless, I have been told to see if the R16 SP #3 upgrade is
    responsible for the observed problems.

    I therefore ask for any input on known performance issues with R16 SP
    3#.

    TIA
    "
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    Normal

    Normal
    IDMS R16.0 using TCP/IP to call a Webserv Program
    "We have a need to use TCP/IP from a IDMS/DC COBOL program to validate
    account numbers that exist on a system running on a Web server. We
    would probably have the COBOL program call a generic assembler program
    to do the #SOCKET calls. The issue that has arisen is the protocol for
    actually talking to Webserv. Has anyone done something similar? Any
    examples would be greatly appreciated.

    Thanks,
    Dan Miley
    Lockheed Martin
    "
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    Normal

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    Re: IDMS R16.0 using TCP/IP to call a Webserv Program
    "Dan,

    See my presentation on how to call a web service.
    You can use COBOL code to make the API calls.
    All you need to do is build a buffer that comforms
    to the protocol required by the web service (get, post, soap)
    The web service owners should have their preferred formats
    for you.

    Terry Schwartz