APAR status
Closed as program error.
Error description
When defining the partition table to return the partitioned data in parallel for the Oracle Enterprise Stage, they are getting Sequential Data across all nodes.
Local fix
Problem summary
Certain queries cause Oracle EE stage to read all data on all nodes instead of partitioning among nodes. This results in duplicated data.
Problem conclusion
Queries are being rewritten incorrectly if they contain a subselect query with a where clause. For example: select id,val,(select 1 from dual where 1=1) from test where 1=1 rewritten as: select /*+ rowid(test)*/ id,val,(select 1 from dual where (test.rowid between 'AAASa8AAEAAAAKgAAA' and 'AAASa8AAEAAAAKnH//' ) AND 1=1) from test where 1=1 Note that in order to correctly partition the results among the nodes, the rowid needs to be added to the main where clause, not to the subselect's where clause.
Temporary fix
Avoid use of subselect with where clause
Comments
APAR Information
APAR number
JR39106
Reported component name
WIS QUALITYSTAG
Reported component ID
5724Q36QS
Reported release
801
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2011-03-09
Closed date
2011-03-23
Last modified date
2011-03-23
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
WIS QUALITYSTAG
Fixed component ID
5724Q36QS
Applicable component levels
R801 PSY
UP
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Document Information
Modified date:
12 October 2021