Pl Sql Trigger Raise Application Error
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if that helps. sql plsql sqlplus share|improve this question edited May 8 '13 at 20:46 Goodwine 92711125 asked May 8 '13 at 20:02 user2363828 312 1 What issue are you having? –zimdanen May 8 '13 at 20:05 Warning: Trigger created with compilation errors. was the issue –user2363828 May 8 '13 at 20:53 i fixed all of my errors on my other triggers except for one that involved count overall i'm really happy i posted this question < 3 –user2363828 May 8 '13 at 21:25 1 Run show errors and show us the real error message. –a_horse_with_no_name May 8 '13 at 22:41 add a comment| 2 Answers 2 active oldest votes up vote 2 down vote accepted When you're getting an error, it's always helpful to specify what error. There is a syntax error in the raise_application_error call in your trigger. That procedure takes two arguments, a number and a string. You are passing in a single argument that is one long string. create or replace trigger minimumwage before insert or update on Employee for each row begin if :new.Wage < 7.25 then raise_application_error(-20000,'Pay is below Texas minimum wage!'); end if; end; should be valid assuming there is a WAGE column in your EMPLOYEE table. share|improve this answer answered May
to your PL/SQL program. With many programming languages, unless you disable error checking, a run-time error such as stack
Ora-20001
overflow or division by zero stops normal processing and returns oracle error codes control to the operating system. With PL/SQL, a mechanism called exception handling lets you bulletproof your program triggers in oracle so that it 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 http://stackoverflow.com/questions/16449225/pl-sql-trigger-using-raise-application-error-thows-error Summary of Predefined PL/SQL Exceptions 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 https://docs.oracle.com/cd/B19306_01/appdev.102/b14261/errors.htm runtime system) or user defined. Examples of internally 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 statemen
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http://www.oraclenerd.com/2010/10/never-use-raiseapplicationerror-again.html RAISE_APPLICATION_ERROR tips Oracle Database Tips by Burleson Consulting March 3, 2015 Question: What does the PL/SQL raise_application_error code do? raise application 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 the procedure. This allows the application to raise application errors rather than just Oracle errors. Error numbers are defined between -20,000 raise application error 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 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 this. It is an abomination of hard-coding and poor practice. If you didn't know that, I'm sorry I was the one who told you. I've written and used extensively an ultra-simple framework to eliminate RAISE_APPLICATION_ERROR from my code forever.Here's an example (assume 11gR2) of something we all know we can do:begin dbms_output.put_line(1/0); end;This will throw an unhandled ORA-01476 exception. We could write some meaningful handling of that with this:begin dbms_output.put_line(1/0);exception when zero_divide then dbms_output.put_line('zero divide exception caught');end;This coding is elegant because Oracle has conveniently predefined an exception named ZERO_DIVIDE and a corresponding pragma for us. Unfortunately, Oracle has only 22 predefined exceptions. What happens when I do this:declare d date;begin d := to_date('2010-09-30', 'YYYY-MM-DD'); -- works dbms_output.put_line(d); d := to_date('12345-09-30', 'YYYY-MM-DD'); -- fails dbms_output.put_line(d);end;This will throw an unhandled ORA-01861 exception. My option to handle this is less than meaningful because this is not a predefined exception:declare d date;begin d := to_date('2010-09-30', 'YYYY-MM-DD'); -- works dbms_output.put_line(d); d := to_date('12345-09-30', 'YYYY-MM-DD'); -- fails dbms_output.put_line(d);exception when others then case sqlcode when -1861 then dbms_output.put_line('literal does not match exception caught'); else raise; end case;end;This leads me to the inevitable desire to create my own named exception and pragma, so I could have code that looks like this instead:declare d date;begin d := to_date('2010-09-30', 'YYYY-MM-DD'); -- works dbms_output.put_line(d); d := to_date('12345-09-30', 'YYYY-MM-DD'); -- fails dbms_output.put_line(d);exception when error.ora_literal_string_mismatch then dbms_output.put_line('literal does not match exception caught');end;Understanding this, creating my own ERROR package with a