Create custom PL/SQL Packages/Functions/Procedures in Oracle without object security overhead

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9.6

Create custom PL/SQL Packages/Functions/Procedures in Oracle without object security overhead

Asked by fwphilb in PL / SQL, Oracle 10.x, Oracle 11.x Database

I would like to create a series of custom PL/SQL Packages/Functions/Procedures that are similar to native Oracle builtins in that they are essentially available to all users without any object security overhead.

While I appreciate that Oracle have used a few tricks for their own native builtins (NVL, GREATEST, etc..) that aren't available to general PL/SQL programmers my exagerated full table scan tests against a large table (500,000+ rows) show some pretty massive timing differences.

Test 1 completes in approximately 8 seconds, whereas Test 2 completes in 140+ seconds.

My understanding is that the SYS.STANDARD package defines the PL/SQL environment and is therefore ultimately that which is being called by the unqualified builtins, therefore I can only assume that the time difference is being in part introduced by object security verification (i.e. can the connected user execute the code they are trying to?) as well as the numerous Oracle only pragmas found in stdspec.sql and stdbody.sql (under ORACLE_HOME\RDBMS\ADMIN).

My question is therefore this, if I want to have custom PL/SQL Packages/Functions/Procedures and I am not worried about the security context (i.e. any user can use these new builtins), is there a way to obtain near Oracle builtin performance?

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             --Test 1
CREATE OR REPLACE PROCEDURE perform_test AS
  cursor test_cur IS SELECT to_date('01-JAN-2009')
                     FROM testtable;
BEGIN
FOR test_rec IN test_cur LOOP
  NULL;
END LOOP;
END;
/
 
--Test 2
CREATE OR REPLACE PROCEDURE perform_test AS
  cursor test_cur IS SELECT sys.standard.to_date('01-JAN-2009')
                     FROM testtable;
BEGIN
FOR test_rec IN test_cur LOOP
  NULL;
END LOOP;
END;

           
         

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Create custom PL/SQL Packages/Functions/Procedures in Oracle without object security overhead

Asked by fwphilb in PL / SQL, Oracle 10.x, Oracle 11.x Database

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