Raise Application Error In Pl Sql Example
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to your PL/SQL program. With many programming languages, unless you disable error checking, a run-time error such as stack overflow or
Raise_application_error Vs Raise
division by zero stops normal processing and returns control to the raise_application_error(-20001 operating system. With PL/SQL, a mechanism called exception handling lets you bulletproof your program so that it
Oracle Raise
can continue operating in the presence of errors. This chapter contains these topics: Overview of PL/SQL Runtime Error Handling Advantages of PL/SQL Exceptions Summary of Predefined PL/SQL Exceptions raise_application_error parameters Defining Your Own PL/SQL Exceptions How PL/SQL Exceptions Are Raised How PL/SQL Exceptions Propagate Reraising a PL/SQL Exception Handling Raised PL/SQL Exceptions Overview of PL/SQL Compile-Time Warnings Overview of PL/SQL Runtime Error Handling In PL/SQL, an error condition is called an exception. Exceptions can be internally defined (by the runtime system) or user defined. Examples of internally write query in sql for updating data in table defined exceptions include division by zero and out of memory. Some common internal exceptions have predefined names, such as ZERO_DIVIDE and STORAGE_ERROR. The other internal exceptions can be given names. You can define exceptions of your own in the declarative part of any PL/SQL block, subprogram, or package. For example, you might define an exception named insufficient_funds to flag overdrawn bank accounts. Unlike internal exceptions, user-defined exceptions must be given names. When an error occurs, an exception is raised. That is, normal execution stops and control transfers to the exception-handling part of your PL/SQL block or subprogram. Internal exceptions are raised implicitly (automatically) by the run-time system. User-defined exceptions must be raised explicitly by RAISE statements, which can also raise predefined exceptions. To handle raised exceptions, you write separate routines called exception handlers. After an exception handler runs, the current block stops executing and the enclosing block resumes with the next statement. If there is no enclosing block, control returns to the host environment. For information on
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Raise Application Error In Oracle Triggers
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raise_application_error sqlerrm RAISE_APPLICATION_ERROR tips Oracle Database Tips by Burleson Consulting March 3, 2015 Question: What does theExplain Different Looping Statement In Pl/sql
PL/SQL raise_application_error code do? Answer: The raise_application_error is actually a procedure defined by Oracle that allows the developer to raise an exception and associate an error number and message with https://docs.oracle.com/cd/B19306_01/appdev.102/b14261/errors.htm the procedure. This allows the application to raise application errors rather than just Oracle errors. Error numbers are defined between -20,000 and -20,999. Oracle provides the raise_application_error procedure to allow you to raise custom error numbers within your applications. You can generate errors and their associated text starting with -20000 and proceeding through -20999 (a grand total of 1,000 error http://www.dba-oracle.com/t_raise_application_error.htm numbers that you can use). Below we illustrate the use of the raise_application_error procedure. Using the raise_application_error procedure: DECLARE Balance integer := 24; BEGIN IF (nBalance <= 100) THEN Raise_Application_Error (-20343, 'The balance is too low.');END IF;END; In this example, error number -20343 is raised if the value of nBalance isn't greater than 100, yielding a message that looks like this: ORA-20343: The balance is too low. All other numbers belong to Oracle for its own errors. The message can be anything that will fit in a varchar2(2000). The final parameter passed to the procedure is a Boolean(true/false) that tells the procedure to add this error to the error stack or replace all errors in the stack with this error. Passing the value of 'True' adds the error to the current stack, while the default is 'False'. SQL> create or replace procedure test_var2 (n_test IN number := 0,3 n_result OUT number)4 as5 begin 6 if n_test > 100 then7 raise_application_error(-20010,'Number Too Large');8 end if;9 n_result := n_test;10 end; 11 / Procedure created. SQL> declare2 n_numb number := &Number
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn http://stackoverflow.com/questions/1760596/oracle-what-is-the-situation-to-use-raise-application-error more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Oracle: what is the situation to use RAISE_APPLICATION_ERROR? up vote raise application 13 down vote favorite 5 We can use RAISE to fire an exception. What particular situations do we need to use RAISE_APPLICATION_ERROR? Thanks. oracle share|improve this question asked Nov 19 '09 at 2:56 Ricky 8,3982762100 I found a useful link for similar question. toadworld.com/platforms/oracle/b/weblog/archive/2010/07/14/… –gmail user Feb 6 '14 at 16:30 add a comment| 4 Answers 4 active oldest votes up vote 23 down vote accepted raise application error There are two uses for RAISE_APPLICATION_ERROR. The first is to replace generic Oracle exception messages with our own, more meaningful messages. The second is to create exception conditions of our own, when Oracle would not throw them. The following procedure illustrates both usages. It enforces a business rule that new employees cannot be hired in the future. It also overrides two Oracle exceptions. One is DUP_VAL_ON_INDEX, which is thrown by a unique key on EMP(ENAME). The other is a a user-defined exception thrown when the foreign key between EMP(MGR) and EMP(EMPNO) is violated (because a manager must be an existing employee). create or replace procedure new_emp ( p_name in emp.ename%type , p_sal in emp.sal%type , p_job in emp.job%type , p_dept in emp.deptno%type , p_mgr in emp.mgr%type , p_hired in emp.hiredate%type := sysdate ) is invalid_manager exception; PRAGMA EXCEPTION_INIT(invalid_manager, -2291); dummy varchar2(1); begin -- check hiredate is valid if trunc(p_hired) > trunc(sysdate) then raise_application_error (-20000 , 'NEW_EMP::hiredate cannot be in the future'); end if; insert into emp ( ename , sal , job , deptno , mgr , hiredate ) values ( p_name , p_sal , p_job , p_dept , p_mgr , trunc(p_hired) ); exception when dup_val_on_index then raise_application_error (-20001 , 'NEW_EMP::employee called '||p_na