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Expdp invoked by a privileged user executes a query for V$OPEN_CURSOR causing slow down (Doc ID 2548089.1)

Last updated on MAY 13, 2020

Applies to:

Oracle Database - Enterprise Edition - Version 12.2.0.1 and later
Oracle Database - Standard Edition - Version 12.2.0.1 and later
Information in this document applies to any platform.

Symptoms

Datapump export invoked by a user who has a privilege role such as DBA,
EXP_FULL_DATABASE, IMP_FULL_DATABASE, DATAPUMP_EXP_FULL_DATABASE
and DATAPUMP_IMP_FULL_DATABASE executes queries for v$open_cursor.
This causes performance degradation. 
 
SQL trace of master control (dm) and worker (dw) processes show
the following sql.
 
  SELECT COUNT(*)
 FROM
  v$open_cursor WHERE sid = SYS_CONTEXT('USERENV', 'SID') AND cursor_type =
   'OPEN_PLSQL'



Changes

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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