duplicatehandlers.sql

介绍Oracle PL SQL编程

/*
 * DuplicateHandlers.sql
 * Chapter 7, Oracle10g PL/SQL Programming
 * by Ron Hardman, Mike McLaughlin, and Scott Urman
 *
 * This example illustrates the PLS-483 error
 */
 
DECLARE
  -- Declare 2 user defined exceptions
  e_Exception1 EXCEPTION;
  e_Exception2 EXCEPTION;
BEGIN
  -- Raise just exception 1.
  RAISE e_Exception1;
EXCEPTION
  WHEN e_Exception2 THEN
    INSERT INTO log_table (info)
      VALUES ('Handler 1 executed!');
  WHEN e_Exception1 THEN
    INSERT INTO log_table (info)
      VALUES ('Handler 3 executed!');
  WHEN e_Exception1 OR e_Exception2 THEN
    INSERT INTO log_table (info)
      VALUES ('Handler 4 executed!');
END;
/