Optimizer_secure_view_merging Parameter Not Effective When Specified In SQL Hint OPT_PARAM (Doc ID 2502377.1)

Last updated on JULY 20, 2024

Applies to:

Symptoms

Optimizer parameter optimizer_secure_view_merging is listed as a valid parameter to be used in the OPT_PARAM SQL hint in the 12.2 SQL Language Reference.

https://docs.oracle.com/en/database/oracle/oracle-database/12.2/sqlrf/Comments.html

However, setting optimizer_secure_view_merging=false in OPT_PARAM hint is not effective.

Changes

Optimizer_secure_view_merging parameter is specified in the SQL hint. 

For example:

SELECT /*+ OPT_PARAM('optimizer_secure_view_merging' 'false') */
  count(EMPNO)
FROM (SELECT * FROM V_EMP WHERE EMPNO=SCOTT.MYFUNC('00007521'));

Cause

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