|
Problem IT21412
|
Status: Closed |
INSTANCE CRASH EVENT MONITOR WHEN PERFORMING A LOAD VIA CURSOR
|
| product: |
DB2 FOR LUW / DB2FORLUW / A50 - DB2 |
| Problem description: |
Instance can crash as a result of memory corruption if you have
the following:
- Event Monitor Created & Enabled.
- LOAD FROM CURSOR with a very large SQL Statement (~ 16KiB text
and larger).
As this is memory corruption the faulting stack may vary but is
likely to include event
monitor and/or fast writer functions. An example may be:
generateEvent__18sqmEvmonGenFactoryXT19
sqmEvmonType_policyXSP17SP47SP25SP8_T37
sqmEvmonUtilLocation_Collector_policy_FP19sqmFastWriterRecord
+ 0xF00
collectEventData__34sqmEvmonUtilStart_Collector_policyFCPC9sqeBs
uEduR15sqmRecordHelperCP19sqmFastWriterRecord + 0xFF8
generateEvent__18sqmEvmonGenFactoryXT19sqmEvmonType_policyXSP17S
P44SP23SP8_T34sqmEvmonUtilStart_Collector_policy_Fv + 0xC84
sqmGenerateLoadStartEvent__FCP8sqlrr_cbP26
sqluCLoadRequestDescriptorP20SQLU_LOADAPI_LOAD_CBP20
sqlmUtilInvocationIDb + 0x374
sqlu_register_table_load__FP26sqluCLoadRequestDescriptorP24
sqlusCLoadMPPCoordinatorP15sql_static_dataPb + 0x1A48
iRun__24sqlusCLoadMPPCoordinatorFv + 0x80
...
It may also trap and fail to produce a stack trace with the
reported si_addr being the
hexadecimal representation of an ASCII string. |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* All Platforms *
****************************************************************
* PROBLEM DESCRIPTION: *
* See Error Description *
****************************************************************
* RECOMMENDATION: *
* Upgrade to Db2 LUW v10.5 Fixpack 10 or later. *
**************************************************************** |
| Local Fix: |
The issue can be avoided by:
- Reducing the SQL Statement text size in the CURSOR.
- Disable the Event Monitors. |
| Solution |
|
| Workaround |
not known / see Local fix |
| BUG-Tracking |
forerunner :
follow-up : IT21440 |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 12.07.2017
16.07.2018
16.07.2018 |
| Problem solved at the following versions (IBM BugInfos) |
|
| Problem solved according to the fixlist(s) of the following version(s) |
