How to determine types of subprograms in Oracle Package

Question

This is best explained with an example. Given the below database objects:

CREATE OR REPLACE PROCEDURE TEST_PROCEDURE IS
BEGIN
  NULL;
END;
/

CREATE OR REPLACE F         


        

Answer 1

You may identify package functions and procedures by using the all_procedures view, examining the data on the method's arguments as it is stored in the data dictionary for a return value:

    SELECT p.object_name
         , p.procedure_name
         , CASE WHEN a.object_id IS NULL THEN 'PROCEDURE' ELSE 'FUNCTION' END ptype
      FROM all_procedures p
 LEFT JOIN all_arguments  a ON (
                                     a.object_id     = p.object_id
                                 AND a.subprogram_id = p.subprogram_id
                                 AND a.data_level    = 0
                                 AND a.argument_name IS NULL
                               )
     WHERE p.object_name IS NOT NULL
         ;