|
Problem IC77523
|
Status: Closed |
ON LINUX, SETTING NOFILES ULIMIT TO A VALUE, HIGHER THEN 64K CAN CAUSE A STACK CORRUPTION |
| product: |
DB2 FOR LUW / DB2FORLUW / 970 - DB2 |
| Problem description: |
On Linux systems , setting NOFILEs ulimit higher then 64K might
cause a stack corruption.
This stack corruption could potentially lead to an instance
trap.
The following messages are examples on how the error would look
like on db2diag.log.
2010-09-01-20.10.16.639154-240 E3414811E517 LEVEL: Error
(OS)
PID : 17263 TID : 47815921232192PROC :
db2sysc 0
INSTANCE: db2inst1 NODE : 000
APPHDL : 0-9799
EDUID : 2208 EDUNAME: db2agent () 0
FUNCTION: DB2 UDB, oper system services, sqloPdbSelectSocket,
probe:20
MESSAGE : ZRC=0x870F0025=-2029060059=SQLO_INVH "invalid file
handle"
DIA8534C An invalid file handle was encountered.
CALLED : OS, -, select OSERR: EBADF
(9)
2010-09-01-20.10.16.982814-240 I3415329E11559 LEVEL: Severe
PID : 17263 TID : 47811676596544PROC :
db2sysc 0
INSTANCE: db2inst1 NODE : 000
APPHDL : 0-28624
EDUID : 1997 EDUNAME: db2agent () 0
FUNCTION: DB2 UDB, base sys utilities, sqlePeekRequest, probe:10
MESSAGE : Possible stack corruption detected!
DATA #1 : Hexdump, 2200 bytes
This is an example of how the PROCESS STACK may look:
ossDumpStackTraceEx
1 OSSTrapFile::dumpEx
2 OSSTrapFile::dump
3 sqlo_trce
4 sqloEDUCodeTrapHandler
5 __invoke_dynamic_linker
6 sqlcctest
7 sqeAgent::AgentBreathingPoint
8 sqldFetchDirect
9 sqldDataFetch
10 sqli_proc_leaf |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* Linux *
****************************************************************
* PROBLEM DESCRIPTION: *
* On Linux systems , setting NOFILEs ulimit higher then 64K *
* might *
* cause a stack corruption. *
* *
* *
* *
* This stack corruption could potentially lead to an instance *
* *
* trap. *
****************************************************************
* RECOMMENDATION: *
* The NOFILE ulimit to less or equal of 64K *
**************************************************************** |
| Local Fix: |
Set NOFILE ulimit to less then 64K on the affected platforms |
| 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 |
|
| Workaround |
not known / see Local fix |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 14.07.2011
22.12.2011
22.12.2011 |
| Problem solved at the following versions (IBM BugInfos) |
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 9.7.0.5
|
 |
