PQ67913: THE NEW JAVA COMPILER THAT IS USED AS A RESULT OF PQ56243 IS NOTTHREAD-SAFE. CAN RESULT IN JAVA.LANG.VERIFYERROR

 A fix is available

4.0.5: WebSphere Application Server Version 4.0 Fix Pack 5 (Version 4.0.5)



APAR status
Closed as program error.

Error description
The new java compiler that is used as a result of 
PQ56243 is not
thread-safe. Can result in java.lang.VerifyError
Local fix
Use the JSP BatchCompiler
Problem summary
****************************************************************
* USERS AFFECTED: WebSphere Application Server developers      *
*                 utilizing the JVM System property            *
*                 com.sun.tools.javac.main.largebranch for     *
*                 large JSPs.                                  *
****************************************************************
* PROBLEM DESCRIPTION: JSP Compilation is not thread safe      *
*                      when the JVM system property            *
*                      com.sun.tools.javac.main.largebranch    *
*                      is set to true for browser based        *
*                      compilations.                           *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
Java's V8 compiler is not thread safe when simultaneous
compilations are occurring.  Due to the compiler not
being thread safe, the compiled source code for
JSPs did not comply with the JVM specification for
class file structure.  This is only an issue for
browser based compilations.  The JSPBatchCompiler
is not affected by this threading issue.
Problem conclusion
To resolve the threading issue with the JDK, WebSphere will
synchronize the loading and compilation of JSPs when this
JVM system is enabled.
Temporary fix Comments
APAR information
APAR number PQ67913
Reported component name WEBSPHERE AE AI
Reported component ID 5630A2200
Reported release 400
Status CLOSED PER
PE NoPE
HIPER NoHIPER
Submitted date 2002-11-05
Closed date 2002-11-13
Last modified date 2002-11-13

APAR is sysrouted FROM one or more of the following:

APAR is sysrouted TO one or more of the following:

Modules/Macros
JSP          

SRLS

Fix information
Fixed component name WEBSPHERE AE AI
Fixed component ID 5630A2200

Applicable component levels
R400 PSY    UP


Document Information


Product categories: Software > Application Servers > Distributed Application & Web Servers > WebSphere Application Server > General
Operating system(s):
Software version: 400
Software edition:
Reference #: PQ67913
IBM Group: Software Group
Modified date: Nov 13, 2002