Query returns wrong results with parallel and hash join used
Last updated on JANUARY 18, 2017
Applies to:Oracle Database - Enterprise Edition - Version 22.214.171.124 to 126.96.36.199 [Release 11.1 to 11.2]
Oracle Database - Enterprise Edition - Version 10.2.0.1 to 10.2.0.4 [Release 10.2]
Information in this document applies to any platform.
After a DB upgrade from 10g to 11g, the following problem started:
1) The same SQL returns different results each time its run.
2) The execution plan is the same with each run.
2) The query is parallel, and the SQL has outer join syntax.
3) When parallel query is disabled, the result is always correct.
Database upgrade from 10g to 11g.
Sign In with your My Oracle Support account
Don't have a My Oracle Support account? Click to get started
My Oracle Support provides customers with access to over a
Million Knowledge Articles and hundreds of Community platforms