PM03938: CWSIJ0053E CAUSES JFAPCONNECTIONBROKENEXCEPTION WHEN SERIALIZED MESSAGE SIZE IS ABOUT 2MB

Fixes are available

APAR status

Closed as program error.

Error description

When a message that is about 2MB in size (serialized form) is
sent from a client to a messaging engine or between messaging
engines, the destination messaging engine logs the following
FFDC:

com.ibm.wsspi.sib.core.exception.SIConnectionLostException:
CWSIJ0053E
at parseSegmentMiddlePayload(InboundTransmissionParser.java:825)
at com.ibm.ws.sib.jfapchannel.impl.InboundTransmissionParser.
parse(InboundTransmissionParser.java:289)
at com.ibm.ws.sib.jfapchannel.impl.ConnectionReadCompleted
Callback.complete(ConnectionReadCompletedCallback.java:248)
at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.
futureCompleted(AioReadCompletionListener.java:165)
at com.ibm.io.async.AbstractAsyncFuture.invokeCallback
(AbstractAsyncFuture.java:217)

Exception = com.ibm.ws.sib.jfapchannel.JFapConnectionBroken
Exception Source = com.ibm.ws.sib.comms.client.ProxyReceive
Listener.errorOccurred probeid = 3-004-0010
com.ibm.ws.sib.jfapchannel.JFapConnectionBrokenException:
CWSIJ0056E:
at com.ibm.ws.sib.jfapchannel.impl.OutboundConnection.
invalidateImpl(OutboundConnection.java:240)
at com.ibm.ws.sib.jfapchannel.impl.Connection.nonThread
SafeInvalidate(Connection.java:1202)
at com.ibm.ws.sib.jfapchannel.impl.Connection.invalidate
(Connection.java:1183)
at com.ibm.ws.sib.jfapchannel.impl.InboundTransmissionParser.
parse(InboundTransmissionParser.java:310)
at com.ibm.ws.sib.jfapchannel.impl.ConnectionReadCompleted
Callback.complete(ConnectionReadCompletedCallback.java:248)
at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.
futureCompleted(AioReadCompletionListener.java:165)

As a result the message cannot be sent.

There is a 12 byte window in the size of the serialized form
of the message when this problem can occur.  If there is not a
significant amount of data in message headers, a payload just
under 2MB in size will cause the problem.

Local fix

Problem summary

****************************************************************
* USERS AFFECTED:  Users of the default messaging provider for *
*                  IBM WebSphere Application Server            *
*                  Version 6.0, Version 6.1 or Version 7.0     *
****************************************************************
* PROBLEM DESCRIPTION: Messages within a 12byte size           *
*                      range, around 2MB, cannot be sent and   *
*                      the messaging engine logs an FFDC       *
*                      with a CWSIJ0053E message               *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
A miscalculation in the low level protocol causes the wrong
number of segments to be sent.  Error checking at the
messaging engine detects this error and closes the connection.

Problem conclusion

The fix for this APAR corrects the miscalculation, and allows
messages within the 12byte size range to be transmitted
correctly.

The fix for this APAR is currently targeted for inclusion in
fix pack 6.0.2.41, 6.1.0.31 and 7.0.0.11.  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
PM03938
Reported component name
PLAT MSG COM
Reported component ID
620600101
Reported release
200
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2009-12-18
Closed date
2010-02-01
Last modified date
2010-02-01

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
PLAT MSG COM
Fixed component ID
620600101

Applicable component levels

R200 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":"6.1","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
29 December 2021

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PM03938: CWSIJ0053E CAUSES JFAPCONNECTIONBROKENEXCEPTION WHEN SERIALIZED MESSAGE SIZE IS ABOUT 2MB

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

R200 PSY

Document Information

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