|
Problem IC74419
|
Status: Closed |
DB2TRC MIGHT TRAP WHEN FORMATTING LONG CLI MESSAGE WHILE PARSING A TRACE RECORD FOR SQLGETDIAGFIELDW |
| product: |
DB2 CONNECT / DB2CONNCT / 970 - DB2 |
| Problem description: |
The db2trc executable that is shipped with the CLI/ODBC driver
uses the "-cli" component customer formatter trace option by
default when formatting a trace dump file ("format/fmt"
command).
If the trace dump contains a very long CLI message then db2trc
might trap because of a corrupted stack.
Note: The trap might also manifest in hang/looping within the
SEGV signal handler.
Such a long message text has been observed when parsing the
trace dump record for a CLI SQLGetDiagFieldW() call.
A stack trace gathered when running db2trc within a debugger
like gdb shows:
(gdb) run fmt ddntt.dmp ddntt.fmt
Starting program: /workbig/user/clidriver/adm/db2trc fmt
ddntt.dmp ddntt.fmt
Trace truncated : NO
Trace wrapped : NO
Total number of trace records : 44585
Program received signal SIGSEGV, Segmentation fault.
0x0000000000423c05 in sqltcliTrcFmt ()
(gdb) where
#0 0x0000000000423c05 in sqltcliTrcFmt ()
#1 0x006400650073006e in ?? ()
#2 0x0069006800740020 in ?? ()
#3 0x0072007000200073 in ?? ()
...
The top function will show sqltcliTrcFmt() while the rest of the
call stack is corrupted. |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* ALL *
****************************************************************
* PROBLEM DESCRIPTION: *
* See Problem Description above. *
****************************************************************
* RECOMMENDATION: *
* Upgrade to DB2 Version 9.7 Fix Pack 4. *
**************************************************************** |
| Local Fix: |
run "db2trc fmt -ncf <dump file> <format file>" to avoid the
trap |
| available fix packs: |
DB2 Version 9.7 Fix Pack 4 for Linux, UNIX, and Windows
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 |
First fixed in DB2 Version 9.7 Fix Pack 4. |
| Workaround |
not known / see Local fix |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 11.02.2011
01.05.2011
01.05.2011 |
| Problem solved at the following versions (IBM BugInfos) |
9.7.FP4
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 9.7.0.4
|
 |
