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DB2 - Problem description

Problem IC76636 Status: Closed

INTERRUPTING CLIENT MIGHT LEAD TO ENGINE HANG DUE TO AGENT STUCK IN
SEMOP().

product:
DB2 FOR LUW / DB2FORLUW / 970 - DB2
Problem description:
In this example 'db2look' was used as the client. 
After interrupting 'db2look' using CTRL-C we can see that the 
'db2look' process is gone as it does not appear in the 'ps' 
output 
anymore. 
 
 
$ ps -ef | grep db2look | grep -v grep 
 
However, db2look still appears in the list of applications. 
 
$ db2 list applications 
 
Auth Id  Application    Appl.      Application Id 
                                 DB       # of 
         Name           Handle 
                                 Name    Agents 
-------- -------------- ---------- 
-------------------------------------------------------------- 
-------- ----- 
E95Q7A   db2look        97         *LOCAL.e95q7a.110408030010 
                                 SAMPLE   1 
 
$ db2pd -db sample -locks 
 
Database Partition 0 -- Database SAMPLE -- Active -- Up 0 days 
00:04:13 -- Date 04/05/2011 13:34:33 
 
Locks: 
Address            TranHdl    Lockname                   Type 
   Mode Sts Owner      Dur HoldCount  Att  ReleaseFlg 
0x07000000303505C0 2          4442324C32473032E3E6718241 
Internal P ..S  G   2          1   0          0x00 0x40000000 
0x0700000030350E80 2          00000001000000010001240056 
Internal V ..S  G   2          1   0          0x00 0x40000000 
0x0700000030350A80 2          00000005000000000000000054 Table 
   .IN  G   2          1   1          0x00 0x40000000 
0x0700000030351C80 2          00000061000000000000000054 Table 
   .IN  G   2          1   1          0x00 0x40000000 
0x0700000030351A80 2          0000000C000000000000000054 Table 
   .IN  G   2          1   1          0x00 0x40000000
Problem Summary:
**************************************************************** 
* USERS AFFECTED:                                              * 
* ALL                                                          * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* In this example 'db2look' was used as the client.            * 
*                                                              * 
* After interrupting 'db2look' using CTRL-C we can see that    * 
* the                                                          * 
* 'db2look' process is gone as it does not appear in the 'ps'  * 
*                                                              * 
* output                                                       * 
*                                                              * 
* anymore.                                                     * 
*                                                              * 
*                                                              * 
*                                                              * 
*                                                              * 
*                                                              * 
* $ ps -ef | grep db2look | grep -v grep                       * 
*                                                              * 
*                                                              * 
*                                                              * 
* However, db2look still appears in the list of applications.  * 
*                                                              * 
*                                                              * 
*                                                              * 
* $ db2 list applications                                      * 
*                                                              * 
*                                                              * 
*                                                              * 
* Auth Id  Application    Appl.      Application Id            * 
*                                                              * 
*                                 DB      # of                 * 
*                                                              * 
*         Name          Handle                                 * 
*                                                              * 
*                                 Name    Agents               * 
*                                                              * 
* -------- -------------- ----------                           * 
*                                                              * 
* ------------------------------------------------------------ * 
* --                                                           * 
* -------- -----                                               * 
*                                                              * 
* E95Q7A  db2look        97        *LOCAL.e95q7a.110408030010  * 
*                                 SAMPLE  1                    * 
*                                                              * 
*                                                              * 
* $ db2pd -db sample -locks                                    * 
*                                                              * 
*                                                              * 
*                                                              * 
* Database Partition 0 -- Database SAMPLE -- Active -- Up 0    * 
* days                                                         * 
* 00:04:13 -- Date 04/05/2011 13:34:33                         * 
*                                                              * 
*                                                              * 
*                                                              * 
* Locks:                                                       * 
*                                                              * 
* Address            TranHdl    Lockname                  Type * 
*                                                              * 
*   Mode Sts Owner      Dur HoldCount  Att  ReleaseFlg         * 
*                                                              * 
* 0x07000000303505C0 2          4442324C32473032E3E6718241     * 
*                                                              * 
* Internal P ..S  G  2          1  0          0x00 0x40000000  * 
* 0x0700000030350E80 2          00000001000000010001240056     * 
*                                                              * 
* Internal V ..S  G  2          1  0          0x00 0x40000000  * 
* 0x0700000030350A80 2          00000005000000000000000054     * 
* Table                                                        * 
*   .IN  G  2          1  1          0x00 0x40000000           * 
* 0x0700000030351C80 2          00000061000000000000000054     * 
* Table                                                        * 
*   .IN  G  2          1  1          0x00 0x40000000           * 
* 0x0700000030351A80 2          0000000C000000000000000054     * 
* Table                                                        * 
*   .IN  G  2          1  1          0x00 0x40000000           * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Upgrade to DB2 UDB version 9.7 fixpack 5.                    * 
****************************************************************
Local Fix:
available fix packs:
DB2 Version 9.7 Fix Pack 5 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 6 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 7 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 8 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9a for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 10 for Linux, UNIX, and Windows

Solution
Problem was first fixed in DB2 UDB Version 9.7 Fix Pack 5.
Workaround
not known / see Local fix
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
25.05.2011
08.12.2011
08.12.2011
Problem solved at the following versions (IBM BugInfos)
9.7.FP5
Problem solved according to the fixlist(s) of the following version(s)
9.7.0.5 FixList