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Problem IC86071
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Status: Closed |
DB2 CAN TRAP IN SQLOGETMEMPOOLSTATSUNLATCHED OR SQLRA_SQLW_RAW_D UMP, WHEN STACKS OR DUMPS BEING COLLECTED ON THE ACTIVE AGENTS. |
| product: |
DB2 FOR LUW / DB2FORLUW / 970 - DB2 |
| Problem description: |
In very rare timing hole, DB2 can trap when stack trace are
dumped.
Few ways to dump stacks, which may result in this type of crash.
db2pd -stack all
db2pd -dump all
kill -23 on db2sysc process on Linux
You can check the db2diag.log for this type of messages:
2012-07-26-09.21.17.769725-240 I60976190E527 LEVEL: Severe
PID : 26093 TID : 46921704008000PROC : db2sysc 1
INSTANCE: xxx NODE : 001
EDUID : 60342 EDUNAME: db2agntdp (xxx ) 1
FUNCTION: DB2 UDB, access plan manager, sqlra_sqlW_raw_dump,
probe:175
MESSAGE : MASTER TIME INFO
DATA #1 : Hexdump, 32 bytes
0x00002AAB000C13F8 : B4E2 0B50 0000 0000 A303 0000 8236 0E00
...P.........6..
0x00002AAB000C1408 : 8336 0E00 B4E2 0B50 0000 0000 0000 0000
.6.....P........
This could be one of the stack dumped with signal #11 during the
crash.
0 ossDumpStackTraceEx
1 OSSTrapFile::dumpEx
2 sqlo_trce
3 sqloEDUCodeTrapHandler
4 GLIBC_PRIVATE
5 sqloGetMemPoolStatsUnlatched
6 ICCC_GetLibraryError
7 sqlra_sqlWC_get_common
8 sqlra_sqlW_raw_dump
9 sqlrr_signal_handler
10 sqloExecuteEDUExitList
11 sqloDumpDiagInfoHandler
12 GLIBC_PRIVATE
13 semtimedop
You can notice from the stack sqlra_sqlW_raw_dump, which is seen
during the stack dump. |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* Users collecting stacks or dumps on db2 process. *
****************************************************************
* PROBLEM DESCRIPTION: *
* See Error Description *
****************************************************************
* RECOMMENDATION: *
* Please avoid running stack dumps. *
**************************************************************** |
| Local Fix: |
Avoid running stack dumps when possible. |
| available fix packs: |
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 |
APAR will be first fixed in Fixpack 9. |
| Workaround |
not known / see Local fix |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 22.08.2012
16.12.2013
16.12.2013 |
| Problem solved at the following versions (IBM BugInfos) |
9.0.
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 9.7.0.9
|
 |
| 9.7.0.9
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