PK53312: WHEN THE SERVER IS UNDER HEAVY LOAD, SSL HANDSHAKES MAY FAIL WITH JAVA.LANG.ILLEGALARGUMENTEXCEPTION

 Fixes are available

6.1.0.15 WebSphere Application Server V6.1 Fix Pack 15 for i5/OS
6.1.0.15 WebSphere Application Server V6.1 Fix Pack 15 for AIX
6.1.0.15: WebSphere Application Server V6.1 Fix Pack 15 for HP-UX
6.1.0.15: WebSphere Application Server V6.1 Fix Pack 15 for Windows
6.1.0.17 WebSphere Application Server V6.1 Fix Pack 17 for i5/OS
6.1.0.17: WebSphere Application Server V6.1 Fix Pack 17 for Linux
6.1.0.17: WebSphere Application Server V6.1 Fix Pack 17 for Solaris
6.1.0.17: WebSphere Application Server V6.1 Fix Pack 17 for HP-UX
6.1.0.17: WebSphere Application Server V6.1 Fix Pack 17 for Windows
6.1.0.17 WebSphere Application Server V6.1 Fix Pack 17 for AIX
6.1.0.15: WebSphere Application Server V6.1 Fix Pack 15 for Linux
6.1.0.15: WebSphere Application Server V6.1 Fix Pack 15 for Solaris
6.1.0.19 WebSphere Application Server V6.1 Fix Pack 19 for AIX
6.1.0.19: WebSphere Application Server V6.1 Fix Pack 19 for HP-UX
6.1.0.19 WebSphere Application Server V6.1 Fix Pack 19 for i5/OS
6.1.0.19: WebSphere Application Server V6.1 Fix Pack 19 for Linux
6.1.0.19: WebSphere Application Server V6.1 Fix Pack 19 for Solaris
6.1.0.19: WebSphere Application Server V6.1 Fix Pack 19 for Windows
Java SDK 1.5 SR8 Cumulative Fix for WebSphere Application Server



APAR status
Closed as program error.

Error description
SSL handshakes fail when the server is under heavy load.
The failure surfaces in FFDC with a stacktrace similar to the
following:
java.lang.IllegalArgumentException
at com.ibm.ws.util.BoundedBuffer.expand(BoundedBuffer.java:645)
at com.ibm.ws.util.ThreadPool.execute(ThreadPool.java:1172)
at com.ibm.ws.util.ThreadPool.execute(ThreadPool.java:1014)
at com.ibm.ws.runtime.WSThreadPool.execute(WSThreadPool.java:15
at com.ibm.ws.ssl.channel.impl.SSLUtils.handleHandshake(SSLUtil
at com.ibm.ws.ssl.channel.impl.SSLHandshakeIOCallback.complete(
at com.ibm.ws.tcp.channel.impl.ZAioTCPReadRequestContextImpl.re
at com.ibm.ws.tcp.channel.impl.ZAioTCPConnLink.readCompleted(ZA
at com.ibm.ws.tcp.channel.impl.ZAioTCPChannel.readCompleted(ZAi
Local fix Problem summary
****************************************************************
* USERS AFFECTED: All users of WebSphere Application Server    *
*                 V6.1 for z/OS                                *
****************************************************************
* PROBLEM DESCRIPTION: SSL connections may fail during         *
*                      handshake processing with a             *
*                      java.lang.IllegalArgumentException      *
*                      when the server is under load.          *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
When WebSphere Application Server processes an SSL handshake an
attempt is made to queue the processing to a different thread.
However, the thread pool that is used is being configured
incorrectly at server startup and can cause problems when there
are more handshake requests to process than there are threads
available in the pool.  The failure surfaces in FFDC with a
stacktrace similar to the following:
java.lang.IllegalArgumentException
at com.ibm.ws.util.BoundedBuffer.expand(BoundedBuffer.java:645)
at com.ibm.ws.util.ThreadPool.execute(ThreadPool.java:1172)
at com.ibm.ws.util.ThreadPool.execute(ThreadPool.java:1014)
at com.ibm.ws.runtime.WSThreadPool.execute
at com.ibm.ws.ssl.channel.impl.SSLUtils.handleHandshake
at com.ibm.ws.ssl.channel.impl.SSLHandshakeIOCallback.complete
at com.ibm.ws.tcp.channel.impl.ZAioTCPReadRequestContextImpl
at com.ibm.ws.tcp.channel.impl.ZAioTCPConnLink.readCompleted
at com.ibm.ws.tcp.channel.impl.ZAioTCPChannel.readCompleted
Problem conclusion
The threadpool initialization has been corrected in order to
avoid the IllegalArgumentExceptions.

APAR PK53312 is currently targeted for inclusion in Service
Level (Fix Pack) 6.1.0.15 of WebSphere Application Server V6.1
for z/OS.
Temporary fix Comments
APAR information
APAR number PK53312
Reported component name WEBSPHERE FOR Z
Reported component ID 5655I3500
Reported release 610
Status CLOSED PER
PE NoPE
HIPER NoHIPER
Special Attention NoSpecatt
Submitted date 2007-09-20
Closed date 2007-11-02
Last modified date 2008-04-01

APAR is sysrouted FROM one or more of the following:

APAR is sysrouted TO one or more of the following:

Modules/Macros
ZAIO          

Publications Referenced

Fix information
Fixed component name WEBSPHERE FOR Z
Fixed component ID 5655I3500

Applicable component levels
R500 PSN    UP
R601 PSN    UP
R610 PSY UK33923    UP08/03/13 P F803

  Fix is available
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Document Information


Current web document: swg1PK53312.html
Product categories: Software > Application Servers > Distributed Application & Web Servers > WebSphere Application Server for z/OS
Operating system(s):
Software version: 610
Software edition:
Reference #: PK53312
IBM Group: Software Group
Modified date: Apr 1, 2008