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DB2 - Problem description

Problem IC98138 Status: Closed

GLOBAL LOCK SNAPSHOT CAN TRAP WHEN INDOUBT TRANSACTIONS ARE PRESENT IN A
DB2 ENVIRONMENT

product:
DB2 FOR LUW / DB2FORLUW / A10 - DB2
Problem description:
During the processing of a GLOBAL LOCK SNAPSHOT in a DB2 system, 
The Instance may trap, if an indoubt transaction exists. 
If DPF environment is used, then indoubt transaction can be 
present on one or more members. 
 
The db2diag.log file should show the following probes: 
 
<TIME INFORMATION>                                LEVEL: Warning 
PID     : <PID>                TID  : <TID>       PROC : db2sysc 
0 
INSTANCE: <Instance Name>      NODE : <Node No>   DB   : 
 
APPHDL  : <Value>              APPID: <Value> 
AUTHID  : <Value> 
EDUID   : <EDU ID>             EDUNAME: db2agent (instance) 0 
FUNCTION: DB2 UDB, database monitor, sqm___sqm_snap_db_locks, 
probe:100 
MESSAGE : Lock monitoring output may be incomplete. 
 
If DIAGLEVEL is set to 4, db2diag.log will show this two probes, 
For Example: 
2013-10-16-12.36.38.564496-240 I889695E390           LEVEL: 
Warning 
PID     : 22924                TID : 139830738544384 PROC : 
db2sysc 1 
INSTANCE: svtdbm2              NODE : 001 
APPHDL  : 0-1319 
HOSTNAME: svtlnx3 
EDUID   : 366                  EDUNAME: db2agntp 1 
FUNCTION: DB2 UDB, database monitor, sqm___sqm_snap_db_locks, 
probe:100 
MESSAGE : Lock monitoring output may be incomplete. 
 
: 
 
2013-10-16-12.36.39.070500-240 I10775916E602         LEVEL: 
Error 
PID     : 22936                TID : 140683243415296 PROC : 
db2sysc 0 
INSTANCE: svtdbm2              NODE : 000            DB   : 
APPHDL  : 0-1319               APPID: *N0.svtdbm2.131016163643 
AUTHID  : SVTDBM2              HOSTNAME: svtlnx3 
EDUID   : 534                  EDUNAME: db2agent (instance) 0 
FUNCTION: DB2 UDB, base sys utilities, sqleagnt_sigsegvh, 
probe:1 
MESSAGE : Error in agent servicing application with coor_node: 
DATA #1 : Hexdump, 2 bytes 
0x00007FF35E80F952 : 0000
Problem Summary:
**************************************************************** 
* USERS AFFECTED:                                              * 
* All DB2 V10 users of DPF environment                         * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* See Error Description                                        * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Upgrade to product version V10.1 fp4                         * 
****************************************************************
Local Fix:
Fetch LOCK snapshot data separately, in Serial setup, make sure 
no indoubt transactions exist. 
In DPF environment fetch each member's LOCK snapshot data 
separately by specifying "AT MEMBER" to direct a series of 
snapshots to particular members, Rather than specifying "GLOBAL" 
on the GET SNAPSHOT command.
available fix packs:
DB2 Version 10.1 Fix Pack 4 for Linux, UNIX, and Windows
DB2 Version 10.1 Fix Pack 6 for Linux, UNIX, and Windows

Solution
When running Global lock snapshots in db2 v10.1, and indoubt 
transactions are present in DPF environment, DB2 may trap
Workaround
not known / see Local fix
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
05.12.2013
02.06.2014
05.09.2014
Problem solved at the following versions (IBM BugInfos)
Problem solved according to the fixlist(s) of the following version(s)
10.1.0.4 FixList