May 2012
Intermediate to advanced
440 pages
9h 1m
English
Content preview from Oracle Advanced PL/SQL Developer Professional GuideBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Policy utilities—refresh and drop
Policy utility activities such as refreshing or dropping can be done through DBMS_RLS package subprograms. Refreshing a policy pushes an enabled VPD protocol to inherit the latest changes done to the policy and its dependents. Policy refresh is required when the underlying referenced objects of the policy undergo changes. So as to invalidate its dependent objects operationally during the policy refresh process, all the cached statements associated with the policy are parsed again.
Notice that a disabled VPD policy cannot be refreshed.
The subprogram requires the policy owner, the table or view name, and the policy name as the input parameters:
SQL> EXEC DBMS_RLS.REFRESH_POLICY('ORADEV','EMPLOYEES','EMP_DEPT_20'); ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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