PM12927: OPEN JPA MEMORY LEAK

Fixes are available

APAR status

Closed as program error.

Error description

Applications utilizing Java Persistence API (JPA) extended
persistence context may experience OutOfMemoryErrors if
their stateful session beans time out rather than being
removed normally.
.
   The java heapdump will show
Number of leak suspects 6

2,030,915,088 (96%) [56] 81 class
mycom/gov/sdp/tesct/jpa/mycomApp

0xbc42748
 1,865,327,568 (88%) [56] 30 class
org/apache/openjpa/enhance/PCRegistry

0xb55f070
  1,865,256,824 (88%) [48] 1 java/util/LinkedList 0x2aaab08a0d50
   1,865,256,776 (88%) [48] 2 java/util/LinkedList$Entry
0x2aaab08dcd70

1,865,327,568 (88%) [56] 30 class
org/apache/openjpa/enhance/PCRegistry

0xb55f070
 1,865,256,824 (88%) [48] 1 java/util/LinkedList 0x2aaab08a0d50
  1,865,256,776 (88%) [48] 2 java/util/LinkedList$Entry
0x2aaab08dcd70
   1,865,256,680 (88%) [48] 3 java/util/LinkedList$Entry
0x2aab29f53f88
    1,865,131,736 (88%) [48] 3 java/util/LinkedList$Entry
0x2aab28e327b0
    124,896 (0%) [280] 26
org/apache/openjpa/jdbc/meta/MappingRepository

0x2aab29ed3ac0
    1,865,256,776 (88%) [48] 2 java/util/LinkedList$Entry
0x2aaab08dcd70
   48 (0%) [48] 3 java/util/LinkedList$Entry 0x2aaab08e6fc8

The heapdump shows that 1800m of the 2G heap is being consumed
by a LinkedList array created by
org/apache/openjpa/enhance/PCRegistry.
The objects in the linked list array are of type
org/apache/openjpa/jdbc/meta/MappingRepository.

Local fix

Problem summary

****************************************************************
* USERS AFFECTED:  All users of IBM WebSphere Application      *
*                  Server V7.0 using Java Persistence API      *
*                  (JPA) Extended Persistence Context          *
****************************************************************
* PROBLEM DESCRIPTION: Applications using JPA extended         *
*                      persistence context may experience Out  *
*                      of Memory issues.                       *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
JPA Entity Managers are associated with a Stateful Session
Bean instance.   If these SFSB instances timeout prior to the
Entity Manager instance being closed they are not properly
cleaned up and will not be garbage collected.  Over time this
can cause OutOfMemory and potentially other issues.

Problem conclusion

The EJBContainer code that functions when timeouts occur has
been fixed to clear out the Entity Manger references to the
Stateful Session Bean instances.

The fix for this APAR is currently targeted for inclusion in
fix pack 7.0.0.13.  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
PM12927
Reported component name
WEBSPHERE APP S
Reported component ID
5724J0800
Reported release
700
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2010-04-22
Closed date
2010-05-21
Last modified date
2012-11-07

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
WEBSPHERE APP S
Fixed component ID
5724J0800

Applicable component levels

R700 PSY
UP

[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"7.0","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
24 October 2021

Tips

PM12927: OPEN JPA MEMORY LEAK

Fixes are available

Subscribe

APAR status

Closed as program error.

Error description

Local fix

Problem summary

Problem conclusion

Temporary fix

Comments

APAR Information

APAR number

Reported component name

Reported component ID

Reported release

Status

PE

HIPER

Special Attention

Submitted date

Closed date

Last modified date

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

Fixed component ID

Applicable component levels

R700 PSY

Document Information

Share your feedback

Need support?