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Posted to dev@openjpa.apache.org by "Ming Fai (JIRA)" <ji...@apache.org> on 2008/06/23 12:42:44 UTC
[jira] Created: (OPENJPA-640) ClassNotFoundException for
InstrumentationFactory upon startup
ClassNotFoundException for InstrumentationFactory upon startup
--------------------------------------------------------------
Key: OPENJPA-640
URL: https://issues.apache.org/jira/browse/OPENJPA-640
Project: OpenJPA
Issue Type: Bug
Components: kernel
Affects Versions: 1.1.0, 1.0.2
Environment: JDK6, 1.2.0-trunk
Reporter: Ming Fai
Priority: Minor
This problem exists for a long time and it affects more than other people as well. Refer to an old thread in the mail list.
http://mail-archives.apache.org/mod_mbox/openjpa-users/200801.mbox/%3C478963D8.209@gmail.com%3E
java.lang.ClassNotFoundException: org.apache.openjpa.enhance.InstrumentationFactory
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at sun.instrument.InstrumentationImpl.loadClassAndStartAgent(InstrumentationImpl.java:280)
at sun.instrument.InstrumentationImpl.loadClassAndCallAgentmain(InstrumentationImpl.java:348)
Previously, I had an old trick to patch the org.apache.openjpa.enhance.InstrumentationFactory.jar to include the InstrumentationFactory but it doesn't work now.
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[jira] Updated: (OPENJPA-640) ClassNotFoundException for
InstrumentationFactory upon startup
Posted by "Ming Fai (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/OPENJPA-640?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ming Fai updated OPENJPA-640:
-----------------------------
Description:
This problem exists for a long time and it affects more than other people as well. Refer to an old thread in the mail list.
http://mail-archives.apache.org/mod_mbox/openjpa-users/200801.mbox/%3C478963D8.209@gmail.com%3E
java.lang.ClassNotFoundException: org.apache.openjpa.enhance.InstrumentationFactory
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at sun.instrument.InstrumentationImpl.loadClassAndStartAgent(InstrumentationImpl.java:280)
at sun.instrument.InstrumentationImpl.loadClassAndCallAgentmain(InstrumentationImpl.java:348)
Previously, I had an old trick to patch the org.apache.openjpa.enhance.InstrumentationFactory.jar to include the InstrumentationFactory but it doesn't work now.
Remarks: the problem is merely about displaying a piece of stacktrace but there is no actual impact to the OpenJPA function. (that's why I marked the priority as minor.)
was:
This problem exists for a long time and it affects more than other people as well. Refer to an old thread in the mail list.
http://mail-archives.apache.org/mod_mbox/openjpa-users/200801.mbox/%3C478963D8.209@gmail.com%3E
java.lang.ClassNotFoundException: org.apache.openjpa.enhance.InstrumentationFactory
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at sun.instrument.InstrumentationImpl.loadClassAndStartAgent(InstrumentationImpl.java:280)
at sun.instrument.InstrumentationImpl.loadClassAndCallAgentmain(InstrumentationImpl.java:348)
Previously, I had an old trick to patch the org.apache.openjpa.enhance.InstrumentationFactory.jar to include the InstrumentationFactory but it doesn't work now.
added remarks
> ClassNotFoundException for InstrumentationFactory upon startup
> --------------------------------------------------------------
>
> Key: OPENJPA-640
> URL: https://issues.apache.org/jira/browse/OPENJPA-640
> Project: OpenJPA
> Issue Type: Bug
> Components: kernel
> Affects Versions: 1.0.2, 1.1.0
> Environment: JDK6, 1.2.0-trunk
> Reporter: Ming Fai
> Priority: Minor
>
> This problem exists for a long time and it affects more than other people as well. Refer to an old thread in the mail list.
> http://mail-archives.apache.org/mod_mbox/openjpa-users/200801.mbox/%3C478963D8.209@gmail.com%3E
> java.lang.ClassNotFoundException: org.apache.openjpa.enhance.InstrumentationFactory
> at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
> at sun.instrument.InstrumentationImpl.loadClassAndStartAgent(InstrumentationImpl.java:280)
> at sun.instrument.InstrumentationImpl.loadClassAndCallAgentmain(InstrumentationImpl.java:348)
> Previously, I had an old trick to patch the org.apache.openjpa.enhance.InstrumentationFactory.jar to include the InstrumentationFactory but it doesn't work now.
> Remarks: the problem is merely about displaying a piece of stacktrace but there is no actual impact to the OpenJPA function. (that's why I marked the priority as minor.)
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[jira] Closed: (OPENJPA-640) ClassNotFoundException for
InstrumentationFactory upon startup
Posted by "Rick Curtis (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/OPENJPA-640?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Rick Curtis closed OPENJPA-640.
-------------------------------
Resolution: Fixed
This issue should be fixed in 2.0.0 and trunk with the changes that Jeremy made for OPENJPA-1410.
If the issue still exists on one of those releases, please re-open.
> ClassNotFoundException for InstrumentationFactory upon startup
> --------------------------------------------------------------
>
> Key: OPENJPA-640
> URL: https://issues.apache.org/jira/browse/OPENJPA-640
> Project: OpenJPA
> Issue Type: Bug
> Components: kernel
> Affects Versions: 1.0.2, 1.1.0, 1.2.0
> Environment: JDK6, 1.2.0-trunk
> Reporter: Mingfai Ma
> Assignee: Rick Curtis
> Priority: Minor
> Fix For: 2.0.0-beta3
>
>
> This problem exists for a long time and it affects more than other people as well. Refer to an old thread in the mail list.
> http://mail-archives.apache.org/mod_mbox/openjpa-users/200801.mbox/%3C478963D8.209@gmail.com%3E
> java.lang.ClassNotFoundException: org.apache.openjpa.enhance.InstrumentationFactory
> at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
> at sun.instrument.InstrumentationImpl.loadClassAndStartAgent(InstrumentationImpl.java:280)
> at sun.instrument.InstrumentationImpl.loadClassAndCallAgentmain(InstrumentationImpl.java:348)
> Previously, I had an old trick to patch the org.apache.openjpa.enhance.InstrumentationFactory.jar to include the InstrumentationFactory but it doesn't work now.
> Remarks: the problem is merely about displaying a piece of stacktrace but there is no actual impact to the OpenJPA function. (that's why I marked the priority as minor.)
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[jira] Commented: (OPENJPA-640) ClassNotFoundException for
InstrumentationFactory upon startup
Posted by "Adam Hardy (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/OPENJPA-640?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12670682#action_12670682 ]
Adam Hardy commented on OPENJPA-640:
------------------------------------
I'd like to bring this one to the front because of two things:
(1) when debugging, the thrown exceptions stop the debugger every time I submit a request to the webserver. Not much fun when everything runs so slowly anyway.
(2) support staff get very jittery about stacktraces in the logs and don't really understand that there isn't actually something wrong.
> ClassNotFoundException for InstrumentationFactory upon startup
> --------------------------------------------------------------
>
> Key: OPENJPA-640
> URL: https://issues.apache.org/jira/browse/OPENJPA-640
> Project: OpenJPA
> Issue Type: Bug
> Components: kernel
> Affects Versions: 1.0.2, 1.1.0, 1.2.0
> Environment: JDK6, 1.2.0-trunk
> Reporter: Ming Fai
> Priority: Minor
>
> This problem exists for a long time and it affects more than other people as well. Refer to an old thread in the mail list.
> http://mail-archives.apache.org/mod_mbox/openjpa-users/200801.mbox/%3C478963D8.209@gmail.com%3E
> java.lang.ClassNotFoundException: org.apache.openjpa.enhance.InstrumentationFactory
> at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
> at sun.instrument.InstrumentationImpl.loadClassAndStartAgent(InstrumentationImpl.java:280)
> at sun.instrument.InstrumentationImpl.loadClassAndCallAgentmain(InstrumentationImpl.java:348)
> Previously, I had an old trick to patch the org.apache.openjpa.enhance.InstrumentationFactory.jar to include the InstrumentationFactory but it doesn't work now.
> Remarks: the problem is merely about displaying a piece of stacktrace but there is no actual impact to the OpenJPA function. (that's why I marked the priority as minor.)
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[jira] Commented: (OPENJPA-640) ClassNotFoundException for
InstrumentationFactory upon startup
Posted by "Kurt T Stam (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/OPENJPA-640?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12765870#action_12765870 ]
Kurt T Stam commented on OPENJPA-640:
-------------------------------------
We're getting it on the jUDDI project too:
http://ci.apache.org/builders/juddi-trunk-openjpa/builds/6/steps/compile/logs/stdio
scroll down toward the bottom. It worries me that something is wrong. Is it ok to release jUDDI with this stack trace?
> ClassNotFoundException for InstrumentationFactory upon startup
> --------------------------------------------------------------
>
> Key: OPENJPA-640
> URL: https://issues.apache.org/jira/browse/OPENJPA-640
> Project: OpenJPA
> Issue Type: Bug
> Components: kernel
> Affects Versions: 1.0.2, 1.1.0, 1.2.0
> Environment: JDK6, 1.2.0-trunk
> Reporter: Mingfai Ma
> Priority: Minor
>
> This problem exists for a long time and it affects more than other people as well. Refer to an old thread in the mail list.
> http://mail-archives.apache.org/mod_mbox/openjpa-users/200801.mbox/%3C478963D8.209@gmail.com%3E
> java.lang.ClassNotFoundException: org.apache.openjpa.enhance.InstrumentationFactory
> at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
> at sun.instrument.InstrumentationImpl.loadClassAndStartAgent(InstrumentationImpl.java:280)
> at sun.instrument.InstrumentationImpl.loadClassAndCallAgentmain(InstrumentationImpl.java:348)
> Previously, I had an old trick to patch the org.apache.openjpa.enhance.InstrumentationFactory.jar to include the InstrumentationFactory but it doesn't work now.
> Remarks: the problem is merely about displaying a piece of stacktrace but there is no actual impact to the OpenJPA function. (that's why I marked the priority as minor.)
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[jira] Commented: (OPENJPA-640) ClassNotFoundException for
InstrumentationFactory upon startup
Posted by "Rick Curtis (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/OPENJPA-640?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12850309#action_12850309 ]
Rick Curtis commented on OPENJPA-640:
-------------------------------------
@Joseph - If you are enhancing your entities are build time this error won't cause you any problems.
> ClassNotFoundException for InstrumentationFactory upon startup
> --------------------------------------------------------------
>
> Key: OPENJPA-640
> URL: https://issues.apache.org/jira/browse/OPENJPA-640
> Project: OpenJPA
> Issue Type: Bug
> Components: kernel
> Affects Versions: 1.0.2, 1.1.0, 1.2.0
> Environment: JDK6, 1.2.0-trunk
> Reporter: Mingfai Ma
> Priority: Minor
>
> This problem exists for a long time and it affects more than other people as well. Refer to an old thread in the mail list.
> http://mail-archives.apache.org/mod_mbox/openjpa-users/200801.mbox/%3C478963D8.209@gmail.com%3E
> java.lang.ClassNotFoundException: org.apache.openjpa.enhance.InstrumentationFactory
> at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
> at sun.instrument.InstrumentationImpl.loadClassAndStartAgent(InstrumentationImpl.java:280)
> at sun.instrument.InstrumentationImpl.loadClassAndCallAgentmain(InstrumentationImpl.java:348)
> Previously, I had an old trick to patch the org.apache.openjpa.enhance.InstrumentationFactory.jar to include the InstrumentationFactory but it doesn't work now.
> Remarks: the problem is merely about displaying a piece of stacktrace but there is no actual impact to the OpenJPA function. (that's why I marked the priority as minor.)
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[jira] Updated: (OPENJPA-640) ClassNotFoundException for
InstrumentationFactory upon startup
Posted by "Adam Hardy (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/OPENJPA-640?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Adam Hardy updated OPENJPA-640:
-------------------------------
Affects Version/s: 1.2.0
> ClassNotFoundException for InstrumentationFactory upon startup
> --------------------------------------------------------------
>
> Key: OPENJPA-640
> URL: https://issues.apache.org/jira/browse/OPENJPA-640
> Project: OpenJPA
> Issue Type: Bug
> Components: kernel
> Affects Versions: 1.0.2, 1.1.0, 1.2.0
> Environment: JDK6, 1.2.0-trunk
> Reporter: Ming Fai
> Priority: Minor
>
> This problem exists for a long time and it affects more than other people as well. Refer to an old thread in the mail list.
> http://mail-archives.apache.org/mod_mbox/openjpa-users/200801.mbox/%3C478963D8.209@gmail.com%3E
> java.lang.ClassNotFoundException: org.apache.openjpa.enhance.InstrumentationFactory
> at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
> at sun.instrument.InstrumentationImpl.loadClassAndStartAgent(InstrumentationImpl.java:280)
> at sun.instrument.InstrumentationImpl.loadClassAndCallAgentmain(InstrumentationImpl.java:348)
> Previously, I had an old trick to patch the org.apache.openjpa.enhance.InstrumentationFactory.jar to include the InstrumentationFactory but it doesn't work now.
> Remarks: the problem is merely about displaying a piece of stacktrace but there is no actual impact to the OpenJPA function. (that's why I marked the priority as minor.)
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[jira] Assigned: (OPENJPA-640) ClassNotFoundException for
InstrumentationFactory upon startup
Posted by "Rick Curtis (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/OPENJPA-640?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Rick Curtis reassigned OPENJPA-640:
-----------------------------------
Assignee: Rick Curtis
> ClassNotFoundException for InstrumentationFactory upon startup
> --------------------------------------------------------------
>
> Key: OPENJPA-640
> URL: https://issues.apache.org/jira/browse/OPENJPA-640
> Project: OpenJPA
> Issue Type: Bug
> Components: kernel
> Affects Versions: 1.0.2, 1.1.0, 1.2.0
> Environment: JDK6, 1.2.0-trunk
> Reporter: Mingfai Ma
> Assignee: Rick Curtis
> Priority: Minor
>
> This problem exists for a long time and it affects more than other people as well. Refer to an old thread in the mail list.
> http://mail-archives.apache.org/mod_mbox/openjpa-users/200801.mbox/%3C478963D8.209@gmail.com%3E
> java.lang.ClassNotFoundException: org.apache.openjpa.enhance.InstrumentationFactory
> at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
> at sun.instrument.InstrumentationImpl.loadClassAndStartAgent(InstrumentationImpl.java:280)
> at sun.instrument.InstrumentationImpl.loadClassAndCallAgentmain(InstrumentationImpl.java:348)
> Previously, I had an old trick to patch the org.apache.openjpa.enhance.InstrumentationFactory.jar to include the InstrumentationFactory but it doesn't work now.
> Remarks: the problem is merely about displaying a piece of stacktrace but there is no actual impact to the OpenJPA function. (that's why I marked the priority as minor.)
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[jira] Updated: (OPENJPA-640) ClassNotFoundException for
InstrumentationFactory upon startup
Posted by "Rick Curtis (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/OPENJPA-640?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Rick Curtis updated OPENJPA-640:
--------------------------------
Fix Version/s: 2.0.0-beta3
> ClassNotFoundException for InstrumentationFactory upon startup
> --------------------------------------------------------------
>
> Key: OPENJPA-640
> URL: https://issues.apache.org/jira/browse/OPENJPA-640
> Project: OpenJPA
> Issue Type: Bug
> Components: kernel
> Affects Versions: 1.0.2, 1.1.0, 1.2.0
> Environment: JDK6, 1.2.0-trunk
> Reporter: Mingfai Ma
> Assignee: Rick Curtis
> Priority: Minor
> Fix For: 2.0.0-beta3
>
>
> This problem exists for a long time and it affects more than other people as well. Refer to an old thread in the mail list.
> http://mail-archives.apache.org/mod_mbox/openjpa-users/200801.mbox/%3C478963D8.209@gmail.com%3E
> java.lang.ClassNotFoundException: org.apache.openjpa.enhance.InstrumentationFactory
> at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
> at sun.instrument.InstrumentationImpl.loadClassAndStartAgent(InstrumentationImpl.java:280)
> at sun.instrument.InstrumentationImpl.loadClassAndCallAgentmain(InstrumentationImpl.java:348)
> Previously, I had an old trick to patch the org.apache.openjpa.enhance.InstrumentationFactory.jar to include the InstrumentationFactory but it doesn't work now.
> Remarks: the problem is merely about displaying a piece of stacktrace but there is no actual impact to the OpenJPA function. (that's why I marked the priority as minor.)
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[jira] Commented: (OPENJPA-640) ClassNotFoundException for
InstrumentationFactory upon startup
Posted by "Joseph Leong (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/OPENJPA-640?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12850165#action_12850165 ]
Joseph Leong commented on OPENJPA-640:
--------------------------------------
Does this problem still exist for OpenJPA 1.2.2? If so, is it still innocuous to OpenJPA functionality as noted by the description?
We're getting:
Exception in thread "Attachment 65390" java.lang.ClassNotFoundException: org.apache.openjpa.enhance.InstrumentationFactory
at java.lang.ClassNotFoundException.<init>(ClassNotFoundException.java:77)
at java.net.URLClassLoader.findClass(URLClassLoader.java:383)
at java.lang.ClassLoader.loadClass(ClassLoader.java:643)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:346)
at java.lang.ClassLoader.loadClass(ClassLoader.java:609)
at sun.instrument.InstrumentationImpl.loadClassAndStartAgent(InstrumentationImpl.java:292)
at sun.instrument.InstrumentationImpl.loadClassAndCallAgentmain(InstrumentationImpl.java:360)
at com.ibm.tools.attach.javaSE.Attachment.loadAgentLibraryImpl(Native Method)
at com.ibm.tools.attach.javaSE.Attachment.loadAgentLibrary(Attachment.java:253)
at com.ibm.tools.attach.javaSE.Attachment.parseLoadAgent(Attachment.java:235)
at com.ibm.tools.attach.javaSE.Attachment.doCommand(Attachment.java:154)
at com.ibm.tools.attach.javaSE.Attachment.run(Attachment.java:116)
JVMJ9TI003E Agent_OnLoad failed for library instrument
Thanks!
> ClassNotFoundException for InstrumentationFactory upon startup
> --------------------------------------------------------------
>
> Key: OPENJPA-640
> URL: https://issues.apache.org/jira/browse/OPENJPA-640
> Project: OpenJPA
> Issue Type: Bug
> Components: kernel
> Affects Versions: 1.0.2, 1.1.0, 1.2.0
> Environment: JDK6, 1.2.0-trunk
> Reporter: Mingfai Ma
> Priority: Minor
>
> This problem exists for a long time and it affects more than other people as well. Refer to an old thread in the mail list.
> http://mail-archives.apache.org/mod_mbox/openjpa-users/200801.mbox/%3C478963D8.209@gmail.com%3E
> java.lang.ClassNotFoundException: org.apache.openjpa.enhance.InstrumentationFactory
> at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
> at sun.instrument.InstrumentationImpl.loadClassAndStartAgent(InstrumentationImpl.java:280)
> at sun.instrument.InstrumentationImpl.loadClassAndCallAgentmain(InstrumentationImpl.java:348)
> Previously, I had an old trick to patch the org.apache.openjpa.enhance.InstrumentationFactory.jar to include the InstrumentationFactory but it doesn't work now.
> Remarks: the problem is merely about displaying a piece of stacktrace but there is no actual impact to the OpenJPA function. (that's why I marked the priority as minor.)
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