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PM67578: THE SIP PROXY MAY CREATE UNNECESSARY CONNECTIONS.

Fixes are available

8.0.0.5: WebSphere Application Server V8.0 Fix Pack 5
7.0.0.27: WebSphere Application Server V7.0 Fix Pack 27
8.5.0.2: WebSphere Application Server V8.5 Fix Pack 2
8.0.0.6: WebSphere Application Server V8.0 Fix Pack 6
7.0.0.29: WebSphere Application Server V7.0 Fix Pack 29
8.0.0.7: WebSphere Application Server V8.0 Fix Pack 7
8.0.0.8: WebSphere Application Server V8.0 Fix Pack 8
7.0.0.31: WebSphere Application Server V7.0 Fix Pack 31
7.0.0.27: Java SDK 1.6 SR13 FP2 Cumulative Fix for WebSphere Application Server
7.0.0.33: WebSphere Application Server V7.0 Fix Pack 33
8.0.0.9: WebSphere Application Server V8.0 Fix Pack 9
7.0.0.35: WebSphere Application Server V7.0 Fix Pack 35
8.0.0.10: WebSphere Application Server V8.0 Fix Pack 10
7.0.0.37: WebSphere Application Server V7.0 Fix Pack 37
8.0.0.11: WebSphere Application Server V8.0 Fix Pack 11
7.0.0.39: WebSphere Application Server V7.0 Fix Pack 39
8.0.0.12: WebSphere Application Server V8.0 Fix Pack 12
7.0.0.41: WebSphere Application Server V7.0 Fix Pack 41
8.0.0.13: WebSphere Application Server V8.0 Fix Pack 13
7.0.0.43: WebSphere Application Server V7.0 Fix Pack 43
8.0.0.14: WebSphere Application Server V8.0 Fix Pack 14
7.0.0.45: WebSphere Application Server V7.0 Fix Pack 45
8.0.0.15: WebSphere Application Server V8.0 Fix Pack 15
7.0.0.27: Java SDK 1.6 SR12 Cumulative Fix for WebSphere Application Server
7.0.0.29: Java SDK 1.6 SR13 FP2 Cumulative Fix for WebSphere Application Server
7.0.0.45: Java SDK 1.6 SR16 FP60 Cumulative Fix for WebSphere Application Server
7.0.0.31: Java SDK 1.6 SR15 Cumulative Fix for WebSphere Application Server
7.0.0.35: Java SDK 1.6 SR16 FP1 Cumulative Fix for WebSphere Application Server
7.0.0.37: Java SDK 1.6 SR16 FP3 Cumulative Fix for WebSphere Application Server
7.0.0.39: Java SDK 1.6 SR16 FP7 Cumulative Fix for WebSphere Application Server
7.0.0.41: Java SDK 1.6 SR16 FP20 Cumulative Fix for WebSphere Application Server
7.0.0.43: Java SDK 1.6 SR16 FP41 Cumulative Fix for WebSphere Application Server

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APAR status

  • Closed as program error.

Error description

  • Under heavy TCP/TLS usage, in some scenarios, the Session
    Initiation Protocol (SIP) Proxy may create unnecessary
    connections.
    

Local fix

  • Local Fix￘
    n/a
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of IBM WebSphere SIP Proxy Server *
    *                                                              *
    ****************************************************************
    * PROBLEM DESCRIPTION: In scenarios where many TCP/TLS         *
    *                      are created, the SIP Proxy may create   *
    *                      unnecessary outbound connections.       *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    In a scenario where the client sends a SIP request to the
    proxy, then the connection is broken before the response is
    returned, the SIP Proxy may create a new connection to the
    client even if an outbound connection already exists.   This
    can result in unnecessary connections existing to the client.
    Over time, the SIP Proxy may experience an out of memory
    condition because of the unnecessary connections.
    

Problem conclusion

  • The SIP Proxy code has been changed so that it reuses an
    existing outbound connection to a client rather than creating
    a new connection. This check occurs during the SIP response
    processing.
    
    To enable this fix, in the administrative console, go to the
    "WebSphere proxy servers > proxy > SIP proxy settings > Custom
    properties page.  Add a custom property with name
    "useExistingOutboundConnection" and set the value to "true".
    
    The fix for this APAR is currently targeted for inclusion in
    fix packs 7.0.0.27, 8.0.0.5, and 8.5.0.2.  Please refer to the
    Recommended Updates page for delivery information:
    http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
    

Temporary fix

  • N/A
    

Comments

APAR Information

  • APAR number

    PM67578

  • Reported component name

    WEBS APP SERV N

  • Reported component ID

    5724H8800

  • Reported release

    700

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-06-25

  • Closed date

    2012-08-29

  • Last modified date

    2012-08-29

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

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

Fix information

  • Fixed component name

    WEBS APP SERV N

  • Fixed component ID

    5724H8800

Applicable component levels

  • R700 PSY

       UP

  • R800 PSY

       UP

  • R850 PSY

       UP



Document information

More support for: WebSphere Application Server
General

Software version: 7.0

Reference #: PM67578

Modified date: 29 August 2012