|
Problem IT06568
|
Status: Closed |
SQL0955 OUT OF MEMORY ERROR MIGHT BE RAISED WITH HIGH INTRA PARTITION PARALLELISM QUERY WITH DISTINCT CLAUSE |
| product: |
DB2 FOR LUW / DB2FORLUW / A50 - DB2 |
| Problem description: |
Under rare conditions and memory constraints a query with
aggregation and high intra partition parallelism might hit the
out of
memory error -955 (SQL0955N).
Erorr similar to following will be reported in the db2diag.log:
EDUID : 12345 EDUNAME: db2agntcol (db2inst1)
FUNCTION: DB2 UDB, CDE Aggregation,
GroupByControlBlock::handleInsufficientMemoryForAggDistinct,
probe:4976
DATA #1 : String, 118 bytes
SORTHEAP needs to be larger for DISTINCT processing. Current
surplus -5136, inUse 263934992, reserved 263929856 bytes.
DATA #2 : Object [PD_TYPE_FUNC_NAME] not dumped
Address: 0x0000000000000000 Size: 0 Reason: Address is NULL
DATA #3 : File name, 23 bytes
GroupByControlBlock.cpp |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* CDE Tables and groupby *
****************************************************************
* PROBLEM DESCRIPTION: *
* See Error Description *
****************************************************************
* RECOMMENDATION: *
* Install this fix *
**************************************************************** |
| Local Fix: |
Lowering DFT_DEGREE for the query might help the query to finish
successfully |
| Solution |
See Error Description |
| Workaround |
not known / see Local fix |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 19.01.2015
26.01.2016
26.01.2016 |
| Problem solved at the following versions (IBM BugInfos) |
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 10.5.0.7
|
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