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DB2 - Problem description

Problem IC79748 Status: Closed

IN RARE TIMING SCENARIOS, CLI-LOAD IN DPF MAY CAUSE TRAP WITH INFINITE
RECURSION SYMPTOM.

product:
DB2 FOR LUW / DB2FORLUW / 950 - DB2
Problem description:
When a CLI-Load is invoked in a DPF environment, in rare timing 
scenarios a trap is possible. 
 
The symptom will show either a 'db2lpart' or 'db2lmr' EDU with 
infinite recursion in it's StackTrace with repeated entries from 
 
sqluCSerializableSocketTagged::iNext() and 
sqluCSerializableSocketTagged::iOpen(), like so: 
 
<StackTrace> 
-------Frame------ ------Function + Offset------ 
0x090000000C790640 iOpen__29sqluCSerializableSocketTaggedFiUiT1 
+ 0x44 
0x090000000C790498 iNext__29sqluCSerializableSocketTaggedFiT1 + 
0x544 
0x090000000C790A40 iOpen__29sqluCSerializableSocketTaggedFiUiT1 
+ 0x444 
0x090000000C78DC64 iNext__23sqluCSerializableSocketFiT1 + 0x130 
0x090000000C790498 iNext__29sqluCSerializableSocketTaggedFiT1 + 
0x544 
........... <thousands of entries like this> ............. 
0x090000000C78DC64 iNext__23sqluCSerializableSocketFiT1 + 0x130 
0x090000000C790498 iNext__29sqluCSerializableSocketTaggedFiT1 + 
0x544 
0x090000000C790A40 iOpen__29sqluCSerializableSocketTaggedFiUiT1 
+ 0x444 
0x090000000C78DC64 iNext__23sqluCSerializableSocketFiT1 + 0x130 
0x090000000C790498 iNext__29sqluCSerializableSocketTaggedFiT1 + 
0x544 
0x090000000C790798 iOpen__29sqluCSerializableSocketTaggedFiUiT1 
+ 0x19C 
 
NOTE: The term "CLI-Load" refers to a CLI application that 
invokes INSERT with the SQL_ATTR_USE_LOAD_API functionality, not 
a CLI application that invokes the db2Load APIs to process a 
data file.
Problem Summary:
**************************************************************** 
* USERS AFFECTED:                                              * 
* Users with CLI-Load in DPF (rare timing scenarios).          * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* Without this APAR, customer is exposed to the issue as       * 
* described in the "ERROR DESCRIPTION" section.                * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Upgrade to DB2 Version 9.5, Fixpack 9.                       * 
****************************************************************
Local Fix:
available fix packs:
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
First fixed in DB2 Version 9.5, Fixpack 9.
Workaround
n/a
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
10.11.2011
17.03.2012
17.03.2012
Problem solved at the following versions (IBM BugInfos)
9.5.FP9
Problem solved according to the fixlist(s) of the following version(s)
9.5.0.9 FixList
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