|
Problem IC91445
|
Status: Closed |
LOAD WITH MDC/RP TABLE and ROW COMPRESSION ENABLED MIGHT HANG BECAUSE OF EXHAUSTED BUFFERS |
| product: |
DB2 FOR LUW / DB2FORLUW / 970 - DB2 |
| Problem description: |
Note that this issue affects DB2 LUW Version 9.7 Fix Pack 8
only.
When very little data buffer is specified, such as 8, for a load
with a MDC/RP table, and row compression is enabled for the
table, the load might hang because of exhausted buffers.
You can see the following stacks (especially the load formatter
stack that is a bit different from the other load hang issues we
have found before):
Load Media Reader (db2lmr):
select
sqlorqueInternal
sqlorque2
sqluReadBufferFromQueue
sqluMCContinueRestore
sqluMCProcessRestoreStates
sqluMCStartRestoreMediaController
sqluCMediaReader::iRun
Load Formatter (db2lfrm0):
msgrcv
sqlorqueInternal
sqlorque2
squGetMsgFromEQ2
sqlulGetBuff
sqlulNextPage
sqluCreateAndInitPage
sqldNextDictPageForLoad
sqldInsertDictionary
sqluInsertDictionary
sqluBuildDictionary
sqluAssignRIDsToDMRecList
sqluRiddifierProcOneSubList
sqluRiddifierProcessRecList
sqluRiddifyRecords
sqluGetNewRecordStruct
sqluFormatDMRec
sqluGetAndFormatRecords
sqluCFormatter::iRun
Load Buffer Manipulator (db2lbm0):
sleep
nsleep
nanosleep
ossSleep
sqlorest
sqlulBMGetNextBuffer
sqluGetMoreDataForBM
sqlulBMCont
sqluCBufferManipulator::iRun
Load Agent (db2agent):
select
sqlorqueInternal
sqlorque2
sqlulReadQ
sqlulPollMsg
sqluvload
call_sqluvload
sqluLoadPartition
sqlu_register_table_load
sqluvtld_route_in |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* All DB2 For LUW users *
****************************************************************
* PROBLEM DESCRIPTION: *
* See Error Description. *
****************************************************************
* RECOMMENDATION: *
* Upgrade to DB2 LUW Version 9.7 Fix Pack 9 or higher levels. *
**************************************************************** |
| Local Fix: |
Increase the number of data buffers |
| 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 |
First fixed in DB2 LUW Version 9.7 Fix Pack 9. |
| Workaround |
not known / see Local fix |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 10.04.2013
17.12.2013
17.12.2013 |
| Problem solved at the following versions (IBM BugInfos) |
9.7.FP9
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 9.7.0.9
|
 |
| 9.7.0.9
|
|
