IBM Support

JR56655: WHEN USER NAMES ARE CAPITALIZED DIFFERENTLY, CACHE MISSES MIGHT OCCUR WHICH CAN CAUSE HIGH CPU USAGE AND WSVR0605W (hung thread)

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • A cache entry that contains user details is found only when the
    user name exactly matches the user name used during the first
    cache access. Subsequent cache accesses with different
    capitalization do not find the cache. As a result, the system
    tries repeatedly to access the IBM Business Process Manager
    (BPM) database to get the user details and performance degrades.
    The following SQL which appears in BPM database traces or from
    long running or high fequency SQL calls on a database report is
    improved by this fix.
    select
    t0.USER_ID,t0.USER_NAME,t0.FULL_NAME,t0.PROVIDER from
    LSW_USR_XREF t0 where UPPER(USER_NAME) = ?
    
       There may also be hung thread messages like this
    [11/22/16 14:37:38:917 CST] 00000082 ThreadMonitor W
    WSVR0605W:
    Thread "WebContainer : 15" (000003be) has been active for
    645,731
    milliseconds and may be hung.  There is/are 1 thread(s) in total
    in the
    server that may be hung.
        at java.net.SocketInputStream.socketRead0(Nat
    ...
        at
    com.lombardisoftware.server.ejb.persistence.dao.UnversionedPODAO
    .executeQuery(UnversionedPODAO.java:233)
        at
    com.lombardisoftware.server.ejb.persistence.dao.UnversionedPODAO
    .findOrdered(UnversionedPODAO.java:222)
        at
    com.lombardisoftware.server.ejb.persistence.dao.UnversionedPODAO
    .findOrdered(UnversionedPODAO.java:207)
        at
    com.lombardisoftware.server.ejb.persistence.dao.UnversionedPODAO
    .find(UnversionedPODAO.java:203)
        at
    com.lombardisoftware.server.ejb.persistence.dao.UserDAO.findByFi
    lter(UserDAO.java:74)
        at
    com.lombardisoftware.server.core.UserCore.findByFilter(UserCore.
    java:652)
        at
    com.lombardisoftware.server.core.cache.UserInfoCache.getUserInfo
    (UserInfoCache.java:134)
        at
    com.lombardisoftware.server.core.cache.UserInfoCache.loadCacheDa
    ta(UserInfoCache.java:78)
        at
    com.lombardisoftware.server.core.cache.UserInfoCache.loadCacheDa
    ta(UserInfoCache.java:27)
    ...
     at
    com.ibm.bpm.pal.util.RepositoryDelegate.getSnapshot(RepositoryDe
    legate.java:149)
        at
    com.ibm.bpm.pal.util.RepositoryDelegate.getSnapshot(RepositoryDe
    legate.java:72)
    

Local fix

Problem summary

  • No additional information is available.
    

Problem conclusion

  • A fix is available for IBM BPM V8.5.5.0 that ensures the user
    details cache can be read by using any user name that the user
    registry accepts, without imposing additional restrictions on
    the capitalization of the user name.
    This is a continuation of JR51631 which fixes a similar are of
    the code.
    On Fix Central (http://www.ibm.com/support/fixcentral), search
    for JR56655:
    1.Select IBM Business Process Manager with your edition from the
      product selector, the installed version to the fix pack level,
      and your platform, and then click Continue.
    2.Select APAR or SPR, enter JR56655, and click Continue.
    When you download fix packages, ensure that you also download
    the readme file for each fix. Review each readme file for
    additional installation instructions and information about the
    fix.
    

Temporary fix

Comments

APAR Information

  • APAR number

    JR56655

  • Reported component name

    BPM STANDARD

  • Reported component ID

    5725C9500

  • Reported release

    855

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2016-09-14

  • Closed date

    2016-12-01

  • Last modified date

    2017-02-24

  • 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

    BPM STANDARD

  • Fixed component ID

    5725C9500

Applicable component levels

  • R855 PSY

       UP

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Document Information

Modified date:
24 February 2017