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DB2 - Problem description

Problem IC66395 Status: Closed

RARE ERROR DURING LOB ACCESS MIGHT CAUSE INSTANCE ABEND IN ossSnprintf

product:
DB2 FOR LUW / DB2FORLUW / 910 - DB2
Problem description:
If a normal but rare error occurs during direct read of LOB data 
(such as failing to obtain an internal conditional latch during 
latch contention), the error handling might trap due to an 
uninitialized internal variable.  The trap file will contain a 
stack trace similar to the following: 
 
<StackTrace> 
-------Frame------ ------Function + Offset------ 
0x0900000000014980 strlen + 0x0 
0x09000000000082A4 _doprnt + 0x2E24 
0x0900000000004678 vsnprintf + 0x158 
0x0900000013300778 ossSnprintf + 0x40 
0x0900000015365488 sqlbDMSDirectRead +   0xA8 
 
0x09000000150B3D1C sqlbDirectRead + 0x9C 
0x09000000150B3BE4 sqldx_diskread + 0x84 
0x09000000150B37B8 sqldxReadLobData + 0x20 
0x09000000150B4064 sqldxReadLob + 0xF8
Problem Summary:
**************************************************************** 
* USERS AFFECTED:                                              * 
* all                                                          * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* If a normal but rare error occurs during direct read of LOB  * 
* data                                                         * 
* (such as failing to obtain an internal conditional latch     * 
* during                                                       * 
* latch contention), the error handling might trap due to an   * 
*                                                              * 
* uninitialized internal variable.  The trap file will contain * 
* a                                                            * 
* stack trace similar to the following:                        * 
*                                                              * 
*                                                              * 
*                                                              * 
* <StackTrace>                                                 * 
*                                                              * 
* -------Frame------ ------Function + Offset------             * 
*                                                              * 
* 0x0900000000014980 strlen + 0x0                              * 
*                                                              * 
* 0x09000000000082A4 _doprnt + 0x2E24                          * 
*                                                              * 
* 0x0900000000004678 vsnprintf + 0x158                         * 
*                                                              * 
* 0x0900000013300778 ossSnprintf + 0x40                        * 
*                                                              * 
* 0x0900000015365488 sqlbDMSDirectRead +  0xA8                 * 
*                                                              * 
*                                                              * 
*                                                              * 
* 0x09000000150B3D1C sqlbDirectRead + 0x9C                     * 
*                                                              * 
* 0x09000000150B3BE4 sqldx_diskread + 0x84                     * 
*                                                              * 
* 0x09000000150B37B8 sqldxReadLobData + 0x20                   * 
*                                                              * 
* 0x09000000150B4064 sqldxReadLob + 0xF8                       * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Upgrade                                                      * 
****************************************************************
Local Fix:
available fix packs:
DB2 Version 9.1 Fix Pack 9  for Linux, UNIX and Windows
DB2 Version 9.1 Fix Pack 10  for Linux, UNIX and Windows
DB2 Version 9.1 Fix Pack 11  for Linux, UNIX and Windows
DB2 Version 9.1 Fix Pack 12  for Linux, UNIX and Windows

Solution
v9 fp 9
Workaround
not known / see Local fix
BUG-Tracking
forerunner  : APAR is sysrouted TO one or more of the following: IC66399 
follow-up : 
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
17.02.2010
06.05.2010
06.05.2010
Problem solved at the following versions (IBM BugInfos)
9.0.FP9
Problem solved according to the fixlist(s) of the following version(s)
9.1.0.9 FixList
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