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DB2 - Problem description

Problem IC71701 Status: Closed

DB2 for zOS or iSeries client may hang or fail with -998 when the
Connection Concentrator is enabled.

product:
DB2 FOR LUW / DB2FORLUW / 950 - DB2
Problem description:
When accessing a DB2 LUW server with the Connection Concentrator 
 
enabled, a DB2 for zOS or iSeries client may experience an 
intermittent hang condition or -998 error.
Problem Summary:
**************************************************************** 
* USERS AFFECTED:                                              * 
* DB2 for zOS or iSeries Clients                               * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* A DB2 for zOS or iSeries client may experience hangs or -998 * 
* errors when accessing a DB2 LUW server that has the          * 
* Connection Concentrator Enabled.                             * 
*                                                              * 
* A db2trc collected at the DB2 LUW Server will show that DB2  * 
* is acting is as designed based upon the DRDA buffers         * 
* received.                                                    * 
*                                                              * 
*                                                              * 
* A client-side trace or TCP/IP trace will show that the       * 
* buffers sent by the client do not align with the buffers     * 
* received by the Server. The                                  * 
* buffers may be incorrectly chained together, or received by  * 
* a different agent.                                           * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Apply FP8 to resolve this problem                            * 
****************************************************************
Local Fix:
Disable the Connection Concentrator
available fix packs:
DB2 Version 9.5 Fix Pack 8 for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 9 for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 10 for Linux, UNIX, and Windows

Solution
Problem first fixed in DB2 v9.5 FP8
Workaround
Disable the Connection Concentrator
BUG-Tracking
forerunner  : APAR is sysrouted TO one or more of the following: IC75314 
follow-up : 
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
05.10.2010
27.06.2011
27.06.2011
Problem solved at the following versions (IBM BugInfos)
9.5.FP8
Problem solved according to the fixlist(s) of the following version(s)
9.5.0.8 FixList