PK75990: CORRUPTED IIOP MESSAGES ARE DROPPED AND CONNECTION FAILED, CAUSING IIOP MESSAGE ORIGINATOR TO TIME OUT.

Fixes are available

APAR status

Closed as program error.

Error description

IIOP messages arrive at the WebSphere Application Server
controller region IIOP port, but there are 4 extra bytes at
the beginning of the message. When this happens, the message
fails basic syntax checking because all IIOP messages begin with
the ascii string "GIOP". Such corrupted messages are discarded
and the connection is failed. The process which sent the IIOP
request is not notified of the failure. No response is
generated, and eventually the sender times out, usually
resulting in an SEC3 ABEND.

Local fix

Problem summary

****************************************************************
* USERS AFFECTED:  All users of WebSphere Application Server   *
*                  V6.1.0 for z/OS                             *
****************************************************************
* PROBLEM DESCRIPTION: The WebSphere Application Server for    *
*                      z/OS server fails to respond to an      *
*                      IIOP client's GIOP request when the     *
*                      GIOP message header is malformed,       *
*                      causing the IIOP client to hang.        *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
When the WebSphere Application Server for z/OS server receives
a GIOP message with a malformed message header, the server
reports the exception with an FFDC record but does not respond
to the IIOP client with an exception.  Thus, the client
receives no indication from the server that the server failed
to process the GIOP message.  The client waits indefinitely for
a response that will never be sent.

Problem conclusion

Updated the server code to terminate the IIOP connection when a
malformed GIOP message header is encountered, thus alerting the
IIOP client that the server could not process the GIOP message.

APAR PK75990 is currently targeted for inclusion in
Service Level (Fix Pack) 6.1.0.23 of WebSphere
Application Server V6.1 for z/OS.

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
PK75990
Reported component name
WEBSPHERE FOR Z
Reported component ID
5655I3500
Reported release
610
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2008-11-19
Closed date
2008-12-09
Last modified date
2009-04-02

APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:

PK76785

Fix information

Fixed component name
WEBSPHERE FOR Z
Fixed component ID
5655I3500

Applicable component levels

R610 PSY UK44403
UP09/03/21 P F903

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

Document Information

Modified date:
29 December 2021

Tips

PK75990: CORRUPTED IIOP MESSAGES ARE DROPPED AND CONNECTION FAILED, CAUSING IIOP MESSAGE ORIGINATOR TO TIME OUT.

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

R610 PSY UK44403

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

Share your feedback

Need support?