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PK48539: CICS SHOULD ONLY BE SENDING HTTP OPTIONS REQUESTS WHEN IT IS NECESSARY TO DO SO

A fix is available

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APAR status

  • Closed as unreproducible.

Error description

  • Before CICS sends an outbound HTTP request it first sends an
    HTTP Options request to check what HTTP level is supported by
    the target server.
    This extra request is often no handled properly by the target
    server and its presence can be a detriment to performance.
    This APAR is being taken to only use OPTIONS when necessary.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All CICS users.                              *
    ****************************************************************
    * PROBLEM DESCRIPTION: Performance of an outbound Web          *
    *                      Services request is poor, especially    *
    *                      if the server does not support          *
    *                      handling of the HTTP OPTIONS method.    *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    CICS/TS 3.1 Outbound Web Services Support uses CICS Web
    Support(WEB OPEN) internally to connect to a server.
    WEB OPEN sends a HTTP flow to the server to capture and
    save the HTTP version of the server, required for any API
    processing that may follow. The Web Services path is
    subjected to this extra flow even though it has no need
    to know the version. The cost in pathlength of this
    flow is exaggerated if the server does not have handling
    for the method used in this flow(ie.OPTIONS), as the
    result may be that the connection is closed, meaning that
    CICS has to recover by issuing a reopen.
    

Problem conclusion

Temporary fix

  • FIX AVAILABLE BY PTF ONLY
    

Comments

  • Outbound CICS Web Services will no longer send an OPTIONS
    request.
    

APAR Information

  • APAR number

    PK48539

  • Reported component name

    CICSTS V3 Z/OS

  • Reported component ID

    5655M1500

  • Reported release

    400

  • Status

    CLOSED UR3

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2007-07-09

  • Closed date

    2007-10-23

  • Last modified date

    2007-11-02

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

    UK30544 UK30545 UK30546 UK30547

Modules/Macros

  •    DESEIWB  DESPITH  DESWBAP  DESWBCL  DESWBDM
    DESWBRQ  DESWBRQF DESWBSR  DESWBXM  DFHEIWB  DFHPITH  DFHWBAP
    DFHWBAPA DFHWBAPF DFHWBAPJ DFHWBAPM DFHWBAPT DFHWBAPV DFHWBCL
    DFHWBCLA DFHWBCLB DFHWBCLC DFHWBCLD DFHWBCLH DFHWBCLI DFHWBCLJ
    DFHWBCLL DFHWBCLM DFHWBCLO DFHWBCLT DFHWBCLV DFHWBDM  DFHWBRQD
    DFHWBRQS DFHWBSR  DFHWBSRA DFHWBSRM DFHWBSRT DFHWBXM  DFHWBXMA
    DFHWBXMT
    

Fix information

  • Fixed component name

    CICSTS V3 Z/OS

  • Fixed component ID

    5655M1500

Applicable component levels

  • R400 PSY UK30544

       UP07/10/27 P F710

  • R401 PSN UK30545

       UP07/10/27 P F710

  • R402 PSN UK30546

       UP07/10/27 P F710

  • R403 PSN UK30547

       UP07/10/27 P F710

Fix is available

  • Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.

[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSGMGV","label":"CICS Transaction Server"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"3.1","Edition":"","Line of Business":{"code":"LOB35","label":"Mainframe SW"}},{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG19M","label":"APARs - z\/OS environment"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"3.1","Edition":"","Line of Business":{"code":"","label":""}}]

Document Information

Modified date:
02 November 2007