Query Rewrite Does Not Occur in Presence of Redundant Joins. Explain_Rewrite May Show QSM-1150/QSM-1123/QSM-1284/QSM-1072

(Doc ID 1364570.1)

Last updated on MARCH 27, 2014

Applies to:

Oracle Database - Enterprise Edition - Version 9.2.0.8 to 11.2.0.3 [Release 9.2 to 11.2]
Information in this document applies to any platform.

Symptoms

Query Rewrite may not occur in presence of redundant joins.
dbms_mview.Explain_Rewrite may show messages as:

MESSAGE
------------------------------------------------------------------------------
QSM-01150: query did not rewrite
QSM-01123: self-join algorithm could not resolve multiple instances
QSM-01284: materialized view XXX has an anchor table YYY 
not found in query
QSM-01072: materialized view, XXX, and query have different
joins between tables, ZZZ and YYY

Cause

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