PM82750: SLOW PORTAL LOGOUT PROCESSING DURING HIGH VOLUME STRESS USAGE

Fixes are available

APAR status

Closed as program error.

Error description

During customer stress  testing of  WP 6.0.6 with WAS 7.0.0.25
they noticed that they could eventually create a blocked
condition during high volume concurrent logout actions  where
processing supporting the logout could get backed up due to the
sequential processing nature of the supporting tasks.

This is not a hang condition.
APAR will  increase amount of concurrent processing and reduce
wait time.

Stack Trace (active thread):

at com/ibm/ws390/orb/ClientDelegate.invokeRequestCFW(Native
Method)
at
com/ibm/ws390/orb/ClientDelegate.commonInvoke(ClientDelegate.jav
a:1042
 at
com/ibm/ws390/orb/ClientDelegate.invoke(ClientDelegate.java:889
at
org/omg/CORBA/portable/ObjectImpl._invoke(ObjectImpl.java:484
                at
com/ibm/ws/webcontainer/httpsession/ws390/proxy/controller/_Http
SessionC
ontrollerProxy_Stub.sendMessage(_HttpSessionControllerProxy_Stub
.java:26
at
com/ibm/ws/session/ws390/SessionContextGroupInstanceFactoryImpl.
sendMess
age(SessionContextGroupInstanceFactoryImpl.java:418(Compiled
Code))
....   rest omitted




Call Stack of one of the waiting threads:



State : Blocked
Monitor : Waiting for Monitor Lock on
java/lang/Integer@0x0000004828C35018/0x0000004828C35030
Stack :
at
com/ibm/ws/session/ws390/SessionContextGroupInstanceFactoryImpl.
sendMessage(SessionContextGroupInstanceFactoryImpl.java:396(Comp
iled
Code)) at
com/ibm/ws/session/ws390/SessionHAGroupStubImpl.sendMessage
(SessionHAGroupStubImpl.java:106(Compiled Code)) at
com/ibm/ws/session/WsSessionContextRegistry.remoteInvalidateAll
(WsSessionContextRegistry.java:287(Compiled Code)) at
com/ibm/ws/session/WsSessionContextRegistry.invalidateAll
(WsSessionContextRegistry.java:266(Compiled Code)) at
com/ibm/ws/session/SessionData.invalidateAll(SessionData.java:11
2
(Compiled Code)) at
com/ibm/wps/engine/SessionListener.sessionDestroyed
(SessionListener.java:83(Compiled Code)) at
com/ibm/ws/session/http/HttpSessionObserver.sessionDestroyed
...... rest omitted

Local fix

```
Wait for processing to finish.
```

Problem summary

****************************************************************
* USERS AFFECTED:  IBM WebSphere Application Server V7.0,      *
*                  V8.0 and V8.5 users with applications that  *
*                  use the IBM session invalidateAll feature   *
*                  on z/OS.                                    *
****************************************************************
* PROBLEM DESCRIPTION: When                                    *
*                      com.ibm.wsspi.servlet.session.IBMSessio *
*                      nExt.invalidateAll() is invoked, the    *
*                      session manager may process             *
*                      "sendMessage" call slowly.              *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
The invalidateAll method is provided in the IBM extension to
the javax.servlet.http.HttpSession interface. When
invalidateAll is invoked, the invalidate sessions messages are
sent sequentially by the session manager.

Problem conclusion

Code changes were made to the Session Manager to send
invalidate sessions messages concurrently when invalidateAll
is invoked.

APAR PM82750 is currently targeted for inclusion in WebSphere
Application Server Fix Packs 7.0.0.29, 8.0.0.7, and 8.5.5.0
of WebSphere Application Server V8.5.

Please refer to URL:
//www.ibm.com/support/docview.wss?rs=404&uid=swg27006970
for Fix Pack availability.

Temporary fix

Comments

APAR Information

APAR number
PM82750
Reported component name
WEBSPHERE FOR Z
Reported component ID
5655I3500
Reported release
700
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2013-02-13
Closed date
2013-04-18
Last modified date
2013-07-03

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 FOR Z
Fixed component ID
5655I3500

Applicable component levels

R700 PSY UK94926
UP13/06/20 P F306

Fix is available

Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.

[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SS7K4U","label":"WebSphere Application Server for z\/OS"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"7.0","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
11 January 2022

Tips

PM82750: SLOW PORTAL LOGOUT PROCESSING DURING HIGH VOLUME STRESS USAGE

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 UK94926

Fix is available

Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.

Document Information

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