Raise Application Error Exception In Oracle
Contents |
to your PL/SQL program. With many programming languages, unless you disable error checking, a run-time error such as stack overflow or division by zero stops normal processing and returns control to the operating system. With PL/SQL, oracle raise a mechanism called exception handling lets you bulletproof your program so that it can difference between pragma exception_init and raise_application_error in oracle continue operating in the presence of errors. This chapter contains these topics: Overview of PL/SQL Runtime Error Handling Advantages of PL/SQL
Difference Between Raise And Raise_application_error In Oracle
Exceptions 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
Raise_application_error(-20001
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 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 raise_application_error parameters 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 managing errors when using BULK COLLECT, see "Handling FORALL Exceptions with the %BULK_EXCEPTIONS Attribute". Example 10-1 calculates a price-to-earnings ratio for a company. If the company has zero earnings, the division operation raises the predefined exception ZERO_DIVIDE, the execution of the block is interrupted, and control is transferred to the exception handlers. The optional OTHERS handler catches all exceptions that the block does not name specifically. Example 10-1 Runtime Error Handling DECLARE stock_price NUMBER := 9.73; net_earnings NUMBER := 0; pe_ratio NUMBER; BEGIN -- Calculation mi
� Last updated: July 05, 2005 - 9:47 am UTC Category: Developer � Version: 8.1.7 Whilst you are here, check out some content from the AskTom team: Table Functions, Part 3a: table functions
Raise Application Error In Oracle Triggers
as parameterized views in the PL/SQL Challenge website Latest Followup You Asked Tom pragma exception_init in oracle What is the difference between pragma exception_init , and raise application error( which is a subprogram from dbms_standard package). In pragma exception_init in oracle 11g example what situations do you use a Raise application_error subprogram. Thanks and we said... pragma exception init turns an Oracle Error into a named exception. If a database operation raises an ORA-00054 "resource https://docs.oracle.com/cd/B19306_01/appdev.102/b14261/errors.htm busy", you would have to code: .... exception when others then if (sqlcode=-54) then .... deal with it. else RAISE; end if; if you pragma exception init'ed this error to some named exception RESOURCE_BUSY , you can code: .... pragma exception_init( resource_busy, -54 ); begin .... exception when resource_busy then .... deal with it. end; much cleaner (i hate when others -- should be outlawed). https://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:636489087908 Raise_application_error is used to RAISE an error - exception_init is used to deal with errors (i guess you could say they are opposites in a way). I use raise_application_error when I want to setup a custom error message to be returned to a client application raise_application_error( -20001, 'You cannot do that!' ); If I just fling a named exception, the client gets the truly usless error message "unhandled user defined exception". If I use raise_application_error -- the client gets whatever I send back. Reviews Write a Review May 14, 2001 - 4:31 am UTC Reviewer: Helena Markova from Bratislava, Slovakia Which table stores the mapping of user defined exception numbers January 28, 2003 - 1:23 pm UTC Reviewer: ss from India When we use pragma exception_init (ABCDXYZ, -2000n ) which table stores this mapping in the database? Thanks Followup January 28, 2003 - 3:08 pm UTC none, well, its in pcode stored in the diana netlibs in the data dictionary but not in any sort of format you and I could get. It is part of the code, it isn't stored anywhere relationaly ORA-00054 in another session with PRAGMA AUTONOMOUS TRANSACTION November 14, 200
SQL TuningSecurityOracle UNIXOracle LinuxMonitoringRemote supportRemote plansRemote servicesApplication Server ApplicationsOracle FormsOracle PortalApp UpgradesSQL ServerOracle ConceptsSoftware SupportRemote Support Development Implementation Consulting StaffConsulting http://www.dba-oracle.com/t_raise_application_error.htm PricesHelp Wanted! Oracle PostersOracle Books Oracle Scripts Ion Excel-DB Don Burleson Blog
http://stackoverflow.com/questions/1760596/oracle-what-is-the-situation-to-use-raise-application-error RAISE_APPLICATION_ERROR tips Oracle Database Tips by Burleson Consulting March 3, 2015 Question: What does the PL/SQL raise_application_error code do? Answer: The raise_application_error is actually a in oracle 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 and -20,999. Oracle provides the raise_application_error procedure to allow error in oracle 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 the procedure to add this error to the error stack or replace all errors in the stack withhere 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 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 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 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_name||' already exists' , true); when invalid_manager then raise_application_error (-20002 , 'NEW_EMP::'||p_mgr ||' is not a valid manager'); end; / How it looks: SQL> exec new_emp ('DUGGAN', 2500, 'SALES', 10, 7782, sysdate+1) BEGIN new_emp ('DUGGAN', 2500, 'SALES', 10, 7782, sysdate+1);