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PI93226: SRVE0266E : ERROR OCCURED WHILE INITIALIZING SERVLETS:JAVA.UTIL.CONCURRENTMODIFICATIONEXCE

Fixes are available

18.0.0.2: WebSphere Application Server Liberty 18.0.0.2
18.0.0.3: WebSphere Application Server Liberty 18.0.0.3
18.0.0.4: WebSphere Application Server Liberty 18.0.0.4
19.0.0.1: WebSphere Application Server Liberty 19.0.0.1
19.0.0.2: WebSphere Application Server Liberty 19.0.0.2
19.0.0.3: WebSphere Application Server Liberty 19.0.0.3
19.0.0.4: WebSphere Application Server Liberty 19.0.0.4
19.0.0.5: WebSphere Application Server Liberty 19.0.0.5
19.0.0.6: WebSphere Application Server Liberty 19.0.0.6
19.0.0.7: WebSphere Application Server Liberty 19.0.0.7
19.0.0.8: WebSphere Application Server Liberty 19.0.0.8
19.0.0.9: WebSphere Application Server Liberty 19.0.0.9
19.0.0.10: WebSphere Application Server Liberty 19.0.0.10
19.0.0.11: WebSphere Application Server Liberty 19.0.0.11
19.0.0.12: WebSphere Application Server Liberty 19.0.0.12
20.0.0.1: WebSphere Application Server Liberty 20.0.0.1
20.0.0.2: WebSphere Application Server Liberty 20.0.0.2
20.0.0.3: WebSphere Application Server Liberty 20.0.0.3
20.0.0.4: WebSphere Application Server Liberty 20.0.0.4
20.0.0.5: WebSphere Application Server Liberty 20.0.0.5
20.0.0.6: WebSphere Application Server Liberty 20.0.0.6
20.0.0.7: WebSphere Application Server Liberty 20.0.0.7
20.0.0.8: WebSphere Application Server Liberty 20.0.0.8
20.0.0.9: WebSphere Application Server Liberty 20.0.0.9
20.0.0.10: WebSphere Application Server Liberty 20.0.0.10
20.0.0.11: WebSphere Application Server Liberty 20.0.0.11
20.0.0.12: WebSphere Application Server Liberty 20.0.0.12

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • Occasionally, 'SRVE0266E : Error occured while initializing
    servlets:java.util.ConcurrentModificationException' occurs
    at
    application startup.
    Example of the exception:
    E SRVE0266E: Error occured while
    initializing
    servlets: java.util.ConcurrentModificationException
    at
    java.util.HashMap$HashIterator.nextNode(HashMap.java:1448)
    at java.util.HashMap$ValueIterator.next(HashMap.java:1477)
    at
    com.ibm.ws.webcontainer.webapp.WebApp.sortNamesByStartUpWeig
    ht(W
    ebApp.java:3808)
    at
    com.ibm.ws.webcontainer.webapp.WebApp.createServletWrappers(
    WebA
    pp.java:1393)
    at
    com.ibm.ws.webcontainer.webapp.WebApp.commonInitializationFi
    nish
    (WebApp.
    java:1132)
    at
    com.ibm.ws.webcontainer.webapp.WebApp.initialize(WebApp.java
    :105
    2)
    

Local fix

  • N/A
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of IBM WebSphere Application      *
    *                  Server Liberty - Web Container              *
    ****************************************************************
    * PROBLEM DESCRIPTION: Application intermittently does not     *
    *                      start due to a                          *
    *                      java.util.ConcurrentModificationExcepti *
    *                      on                                      *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    When the WebContainer custom property "deferServletLoad" is set
    to "false" (default is "true"), applications may intermittently
    fail to start due to a
    java.util.ConcurrentModificationException.  If this occurs, the
    following error and exception will be visible in messages.log:
    
    SRVE0266E: Error occured while initializing servlets:
    java.util.ConcurrentModificationException
    at java.util.HashMap$HashIterator.nextNode(HashMap.java:1448)
    at java.util.HashMap$ValueIterator.next(HashMap.java:1477)
    at
    com.ibm.ws.webcontainer.webapp.WebApp.sortNamesByStartUpWeight(W
    ebApp.java:3808)
    at
    com.ibm.ws.webcontainer.webapp.WebApp.createServletWrappers(WebA
    pp.java:1393)
    at
    com.ibm.ws.webcontainer.webapp.WebApp.commonInitializationFinish
    (WebApp.java:1132)
    at
    com.ibm.ws.webcontainer.webapp.WebApp.initialize(WebApp.java:105
    2)
    

Problem conclusion

Temporary fix

  • Set the WebContainer custom property "deferServletLoad" to
    "true" (default)
    

Comments

APAR Information

  • APAR number

    PI93226

  • Reported component name

    LIBERTY PROFILE

  • Reported component ID

    5724J0814

  • Reported release

    CD0

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2018-02-01

  • Closed date

    2018-05-04

  • Last modified date

    2018-05-04

  • 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

    LIBERTY PROFILE

  • Fixed component ID

    5724J0814

Applicable component levels

  • RCD0 PSY

       UP

[{"Business Unit":{"code":"BU053","label":"Cloud \u0026 Data Platform"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"CD0","Line of Business":{"code":"LOB36","label":"IBM Automation"}}]

Document Information

Modified date:
19 October 2021