2026-03-12 20:23:15

timhall/10g/test_calendar_string.sql

@@ -0,0 +1,35 @@
+-- -----------------------------------------------------------------------------------
+-- File Name    : https://oracle-base.com/dba/10g/test_calendar_string.sql
+-- Author       : Tim Hall
+-- Description  : Displays the schedule associated with a calendar string.
+-- Requirements : Access to the DBMS_SCHEDULER package.
+-- Call Syntax  : @test_calendar_string (frequency) (interations)
+--                @test_calendar_string 'freq=hourly; byminute=0,30; bysecond=0;' 5
+-- Last Modified: 27/07/2005
+-- -----------------------------------------------------------------------------------
+
+SET SERVEROUTPUT ON;
+SET VERIFY OFF
+ALTER SESSION SET nls_timestamp_format = 'DD-MON-YYYY HH24:MI:SS';
+
+DECLARE
+  l_calendar_string  VARCHAR2(100) := '&1';
+  l_iterations       NUMBER        := &2;
+
+  l_start_date         TIMESTAMP := TO_TIMESTAMP('01-JAN-2004 03:04:32',
+                                                 'DD-MON-YYYY HH24:MI:SS');
+  l_return_date_after  TIMESTAMP := l_start_date;
+  l_next_run_date      TIMESTAMP;
+BEGIN
+  FOR i IN 1 .. l_iterations LOOP
+    DBMS_SCHEDULER.evaluate_calendar_string(  
+      calendar_string   => l_calendar_string,
+      start_date        => l_start_date,
+      return_date_after => l_return_date_after,
+      next_run_date     => l_next_run_date);
+    
+    DBMS_OUTPUT.put_line('Next Run Date: ' || l_next_run_date);
+    l_return_date_after := l_next_run_date;
+  END LOOP;
+END;
+/