Fixes are available
9.0.0.2: WebSphere Application Server traditional V9.0 Fix Pack 2
8.5.5.11: WebSphere Application Server V8.5.5 Fix Pack 11
16.0.0.4: WebSphere Application Server Liberty 16.0.0.4
9.0.0.3: WebSphere Application Server traditional V9.0 Fix Pack 3
9.0.0.4: WebSphere Application Server traditional V9.0 Fix Pack 4
8.5.5.12: WebSphere Application Server V8.5.5 Fix Pack 12
9.0.0.5: WebSphere Application Server traditional V9.0 Fix Pack 5
9.0.0.6: WebSphere Application Server traditional V9.0 Fix Pack 6
8.5.5.13: WebSphere Application Server V8.5.5 Fix Pack 13
9.0.0.7: WebSphere Application Server traditional V9.0 Fix Pack 7
17.0.0.1: WebSphere Application Server Liberty 17.0.0.1
17.0.0.2: WebSphere Application Server Liberty 17.0.0.2
17.0.0.3: WebSphere Application Server Liberty 17.0.0.3
17.0.0.4: WebSphere Application Server Liberty 17.0.0.4
18.0.0.1: WebSphere Application Server Liberty 18.0.0.1
18.0.0.2: WebSphere Application Server Liberty 18.0.0.2
9.0.0.8: WebSphere Application Server traditional V9.0 Fix Pack 8
8.5.5.14: WebSphere Application Server V8.5.5 Fix Pack 14
9.0.0.9: WebSphere Application Server traditional V9.0 Fix Pack 9
18.0.0.3: WebSphere Application Server Liberty 18.0.0.3
9.0.0.10: WebSphere Application Server traditional V9.0 Fix Pack 10
18.0.0.4: WebSphere Application Server Liberty 18.0.0.4
19.0.0.1: WebSphere Application Server Liberty 19.0.0.1
8.5.5.15: WebSphere Application Server V8.5.5 Fix Pack 15
19.0.0.2: WebSphere Application Server Liberty 19.0.0.2
19.0.0.3: WebSphere Application Server Liberty 19.0.0.3
9.0.0.11: WebSphere Application Server traditional V9.0 Fix Pack 11
19.0.0.4: WebSphere Application Server Liberty 19.0.0.4
19.0.0.5: WebSphere Application Server Liberty 19.0.0.5
9.0.5.0: WebSphere Application Server traditional Version 9.0.5 Refresh Pack
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
9.0.5.1: WebSphere Application Server traditional Version 9.0.5 Fix Pack 1
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
9.0.5.2: WebSphere Application Server traditional Version 9.0.5 Fix Pack 2
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
8.5.5.17: WebSphere Application Server V8.5.5 Fix Pack 17
9.0.5.3: WebSphere Application Server traditional Version 9.0.5 Fix Pack 3
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
9.0.5.4: WebSphere Application Server traditional Version 9.0.5 Fix Pack 4
20.0.0.7: WebSphere Application Server Liberty 20.0.0.7
20.0.0.8: WebSphere Application Server Liberty 20.0.0.8
9.0.5.5: WebSphere Application Server traditional Version 9.0.5 Fix Pack 5
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
WebSphere Application Server traditional 9.0.5.6
21.0.0.3: WebSphere Application Server Liberty 21.0.0.3
9.0.5.7: WebSphere Application Server traditional Version 9.0.5 Fix Pack 7
21.0.0.4: WebSphere Application Server Liberty 21.0.0.4
21.0.0.5: WebSphere Application Server Liberty 21.0.0.5
21.0.0.6: WebSphere Application Server Liberty 21.0.0.6
9.0.5.8: WebSphere Application Server traditional Version 9.0.5.8
21.0.0.7: WebSphere Application Server Liberty 21.0.0.7
8.5.5.20: WebSphere Application Server V8.5.5.20
8.5.5.18: WebSphere Application Server V8.5.5 Fix Pack 18
21.0.0.1: WebSphere Application Server Liberty 21.0.0.1
8.5.5.19: WebSphere Application Server V8.5.5 Fix Pack 19
21.0.0.2: WebSphere Application Server Liberty 21.0.0.2
21.0.0.8: WebSphere Application Server Liberty 21.0.0.8
21.0.0.9: WebSphere Application Server Liberty 21.0.0.9
9.0.5.9: WebSphere Application Server traditional Version 9.0.5.9
21.0.0.10: WebSphere Application Server Liberty 21.0.0.10
21.0.0.11: WebSphere Application Server Liberty 21.0.0.11
21.0.0.12: WebSphere Application Server Liberty 21.0.0.12
9.0.5.10: WebSphere Application Server traditional Version 9.0.5.10
8.5.5.16: WebSphere Application Server V8.5.5 Fix Pack 16
22.0.0.1: WebSphere Application Server Liberty 22.0.0.1
22.0.0.2: WebSphere Application Server Liberty 22.0.0.2
8.5.5.21: WebSphere Application Server V8.5.5.21
22.0.0.3: WebSphere Application Server Liberty 22.0.0.3
9.0.5.11: WebSphere Application Server traditional Version 9.0.5.11
22.0.0.4: WebSphere Application Server Liberty 22.0.0.4
APAR status
Closed as program error.
Error description
The following block in the OpenJPA's ConfigurationImpl.loadGlobals() method contains: // let system properties override other globals try { fromProperties(new HashMap( AccessController.doPrivileged( J2DoPrivHelper.getPropertiesAction()))); This retrieves a Properties object from System.getProperties(), which is passed to HashMap's ctor. The ctor interacts with an enumerator associated with the Properties object to populate the new HashMap instance. However, if another thread mutates the JVM's System Properties, it can result in a ConcurrentModificationException as observed below: Caused by: java.util.ConcurrentModificationException at java.util.Hashtable$Enumerator.next(Hashtable.java:1256) at java.util.HashMap.putAllForCreate(HashMap.java:566) at java.util.HashMap.<init>(HashMap.java:310) at org.apache.openjpa.lib.conf.ConfigurationImpl.loadGlobals(Co nfigurationImpl.java:189)
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All users of IBM WebSphere Application * * Server Liberty and traditional V8.5.5 and * * V9.0.0 - Java Persistence API (JPA) * **************************************************************** * PROBLEM DESCRIPTION: OpenJPA's * * ConfigurationImpl.loadGlobals() has * * java.util.ConcurrentModificationExcepti * * on * **************************************************************** * RECOMMENDATION: * **************************************************************** The following block in the OpenJPA's ConfigurationImpl.loadGlobals() method contains: // let system properties override other globals try { fromProperties(new HashMap( AccessController.doPrivileged( J2DoPrivHelper.getPropertiesAction()))); This retrieves a Properties object from System.getProperties(), which is passed to HashMap's ctor. The ctor interacts with an enumerator associated with the Properties object to populate the new HashMap instance. However, if another thread mutates the JVM's System Properties, it can result in a ConcurrentModificationException as observed below: Caused by: java.util.ConcurrentModificationException at java.util.Hashtable$Enumerator.next(Hashtable.java:1256) at java.util.HashMap.putAllForCreate(HashMap.java:566) at java.util.HashMap.<init>(HashMap.java:310) at org.apache.openjpa.lib.conf.ConfigurationImpl.loadGlobals(Config urationImpl.java:189)
Problem conclusion
With this fix, code has been added to OpenJPA to ensure that method ConfigurationImpl.loadGlobals() is property synchronized to avoid potential concurrent modifications. The fix for this APAR is currently targeted for inclusion in Service Levels (Fix Packs) 8.5.5.12 and 9.0.0.3 of WebSphere Application Server versions 8.5.5 and 9.0.0, and fix pack 17.0.0.1 for WebSphere Application Server Liberty. 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
PI70841
Reported component name
LIBERTY PROFILE
Reported component ID
5724J0814
Reported release
855
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2016-10-18
Closed date
2016-10-20
Last modified date
2016-10-20
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
R855 PSY
UP
Document Information
Modified date:
03 May 2022