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Slow performance of query for DBA_SYNONYMS view on CDB (Doc ID 2164844.1)

Last updated on FEBRUARY 19, 2019

Applies to:

Oracle Database - Enterprise Edition - Version 12.1.0.1 to 12.1.0.2 [Release 12.1]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Backup Service - Version N/A and later
Information in this document applies to any platform.

Symptoms

NOTE: In the images and/or the document content below, the user information and data used represents fictitious data from the Oracle sample schema(s) or Public Documentation delivered with an Oracle database product.  Any similarity to actual persons, living or dead, is purely coincidental and not intended in any manner.

Performance of query on PDB is too slow at CDB(Container Database) env when query refers DBA_SYNONYMS view.
And that query is executed as parallel query.

Changes

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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