PK72316: DMGR WORKSPACE LEAK WHEN UTILIZING CONSOLE

Fixes are available

APAR status

Closed as program error.

Error description

There are Action class leaks in the administrative console
which are holding onto workspace in a field even after a
console logout. Thus, creating a leak (shown at the bottom).
This leak is noticible only on very large environments.

The administrative console panels are holding on to the session
object directly. Because of this, even after the session is
invalidated, there is still a reference to the object.
Therefore, all the session attributes are preserved and there
is no garbage collection done.

There is also another leak related to workspace.


44
,684,848 (35%) [32] 2
com/ibm/ws/session/WasHttpAppSessionAttributeObserver 0x3a8d658
44,684,816 (35%) [32] 2
com/ibm/ws/session/WasHttpSessionAdapter 0x3927218
44,656,376 (35%) [256] 46
com/ibm/ws/webcontainer/webapp/WebAppImpl 0x38e6cf8
43,363,968 (34%) [32] 2
java/util/Collections$SynchronizedMap 0x38e75a8
43,363,936 (34%) [56] 1 java/util/HashMap 0x38e7578
43,363,880 (34%) [272] 23 array of
[Ljava/util/HashMap$Entry; 0x3cdd510
26,475,544 (21%) [40] 2 java/util/HashMap$Entry 0x3c83970
6,023,472 (4%) [40] 2 java/util/HashMap$Entry 0x3a358e0
4,316,736 (3%) [40] 2 java/util/HashMap$Entry 0x3b5e520
4,277,728 (3%) [40] 2 java/util/HashMap$Entry 0x3c97dd0
4,277,552 (3%) [64] 6
com/ibm/isclite/container/controller/InformationController
0x3c97518
4,277,320 (3%) [56] 1 java/util/HashMap 0x3c97548
4,277,264 (3%) [144] 13 array of
[Ljava/util/HashMap$Entry; 0x5f607c8
4,274,736 (3%) [40] 2 java/util/HashMap$Entry
0x4c432e8
4,274,696 (3%) [56] 7
com/ibm/ws/console/web/wizard/SelectWebServerTemplateAction
0x4c432c0
4,272,288 (3%) [32] 1
com/ibm/ws/session/HttpSessionFacade 0x5bfb3e0
4,272,256 (3%) [72] 5
com/ibm/ws/session/WsSessionData 0x5bfb3a8
4,272,184 (3%) [128] 10
com/ibm/ws/session/store/memory/MemorySession 0x5bfb2e8
4,266,040 (3%) [56] 1 java/util/Hashtable
0x5bfb380

Local fix

Problem summary

****************************************************************
* USERS AFFECTED:  All users of WebSphere Application Server   *
*                  7.0 using the Administrative Console        *
****************************************************************
* PROBLEM DESCRIPTION: Noticeable deployment manager memory    *
*                      leaks seen for large environments       *
*                      during use of the console.              *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
Two memory leak problems were addressed.
1) There are Action class leaks in the administrative console
which are holding onto workspace in a field even after a
console logout.
2) ThreadLocals are being created for workspace and other
objects, but are not being cleared.

Problem conclusion

Code changes have been made to fix the memory leaks.

The fix for this APAR is currently targeted for inclusion in
fixpack 7.0.0.1.  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
PK72316
Reported component name
WEBS APP SERV N
Reported component ID
5724H8800
Reported release
700
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2008-09-17
Closed date
2008-10-24
Last modified date
2008-10-24

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
WEBS APP SERV N
Fixed component ID
5724H8800

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:
23 October 2021

Tips

PK72316: DMGR WORKSPACE LEAK WHEN UTILIZING CONSOLE

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

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