A fix is available
APAR status
Closed as program error.
Error description
The CriteriaBuilder blocks when multiple threads work on constructing predicate expressions.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All users of IBM WebSphere Application * * Server * * Liberty Profile * **************************************************************** * PROBLEM DESCRIPTION: CriteriaBuilder predicate construction * * deadlocks in multi-core VM due to a * * static initializer. * **************************************************************** * RECOMMENDATION: * **************************************************************** The CriteriaBuilder blocks when multiple threads work on constructing predicate expressions. The following deadlocked/hung threads are flagged in system logs implicating CriteriaBuilder code: WTRN0124I: When the timeout occurred the thread with which the transaction is, or was most recently, associated was Thread[WebContainer : 2,5, java.lang.Object.wait(Native Method) java.lang.Object.wait(Object.java:167) java.lang.J9VMInternals.initialize(J9VMInternals.java:265) org.apache.openjpa.persistence.criteria. CriteriaBuilderImpl.conjunction(CriteriaBuilderImpl.java:186) java.lang.Object.wait(Native Method) java.lang.Object.wait(Object.java:167) java.lang.J9VMInternals.initialize(J9VMInternals.java:265) java.lang.J9VMInternals.initialize(J9VMInternals.java:195) java.lang.J9VMInternals.initialize(J9VMInternals.java:195) org.apache.openjpa.persistence.criteria. CriteriaBuilderImpl.lessThan(CriteriaBuilderImpl.java:367) WTRN0124I: When the timeout occurred the thread with which the transaction is, or was most recently, associated was Thread[DefaultWorkManager.Alarm Pool : 0,5,DefaultWorkManager: WAS java.lang.Object.wait(Native Method) java.lang.Object.wait(Object.java:167) java.lang.J9VMInternals.initialize(J9VMInternals.java:265) java.lang.J9VMInternals.initialize(J9VMInternals.java:195) org.apache.openjpa.persistence.criteria. PredicateImpl.(PredicateImpl.java:49) java.lang.J9VMInternals.initializeImpl(Native Method) java.lang.J9VMInternals.initialize(J9VMInternals.java:228) java.lang.J9VMInternals.initialize(J9VMInternals.java:195) org.apache.openjpa.persistence.criteria. CriteriaBuilderImpl.conjunction(CriteriaBuilderImpl.java:186) This can occur when many threads are attempting to use CriteriaBuilder at the same time. The threads hang due to the use of static initialization in the construction of classes used by CriteriaBuilder.
Problem conclusion
With this fix, code has been added to OpenJPA to add proper sychronization when constructing CriteriaBuilder predicates. The fix for this APAR is currently targeted for inclusion in fix pack 8.5.0.2. Please refer to the Recommended Updates page for delivery information: http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
Temporary fix
Comments
APAR Information
APAR number
PM80453
Reported component name
LIBERTY PROFILE
Reported component ID
5724J0814
Reported release
850
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2013-01-11
Closed date
2013-03-28
Last modified date
2013-03-28
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
R850 PSY
UP
[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"850","Line of Business":{"code":"LOB45","label":"Automation"}}]
Document Information
Modified date:
29 October 2021