Raise Error In Oracle Trigger

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 more about Stack Overflow the oracle trigger exception raise_application_error company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions exceptions in triggers Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million oracle trigger when clause programmers, just like you, helping each other. Join them; it only takes a minute: Sign up How to raise an Exception inside a Trigger? Is there a way to do this? up vote 4 down vote favorite

Oracle Trigger Before Insert

There's a situation like: If the Salary column in updated with a value lesser than it's original value, print an error message and let the update NOT happen. This is what I've written so far: CREATE OR REPLACE TRIGGER TRIG1 BEFORE UPDATE OF SAL ON EMP for each row USER_XCEP EXCEPTION WHEN (NEW.SAL

occurs. Note: The database can detect only system-defined events. You cannot define your own events. Topics Overview of Triggers Reasons to Use Triggers DML Triggers System Triggers Subprograms Invoked by oracle triggers Triggers Trigger Compilation, Invalidation, and Recompilation Exception Handling in Triggers Trigger Design Guidelines Trigger

Ora-04091

Restrictions Order in Which Triggers Fire Trigger Enabling and Disabling Trigger Changing and Debugging Triggers and Oracle Database Data Transfer

Oracle Pl/sql Exception Handling

Utilities Triggers for Publishing Events Views for Information About Triggers Overview of Triggers Like a stored procedure, a trigger is a named PL/SQL unit that is stored in the database and can be invoked repeatedly. http://stackoverflow.com/questions/18682341/how-to-raise-an-exception-inside-a-trigger-is-there-a-way-to-do-this Unlike a stored procedure, you can enable and disable a trigger, but you cannot explicitly invoke it. While a trigger is enabled, the database automatically invokes it—that is, the trigger fires—whenever its triggering event occurs. While a trigger is disabled, it does not fire. You create a trigger with the CREATE TRIGGER statement. You specify the triggering event in terms of triggering statements and the item on which they https://docs.oracle.com/cloud/latest/db112/LNPLS/triggers.htm act. The trigger is said to be created on or defined on the item, which is either a table, a view, a schema, or the database. You also specify the timing point, which determines whether the trigger fires before or after the triggering statement runs and whether it fires for each row that the triggering statement affects. By default, a trigger is created in the enabled state. For more information about the CREATE TRIGGER statement, see "CREATE TRIGGER Statement". If the trigger is created on a table or view, then the triggering event is composed of DML statements, and the trigger is called a DML trigger. For more information, see "DML Triggers". If the trigger is created on a schema or the database, then the triggering event is composed of either DDL or database operation statements, and the trigger is called a system trigger. For more information, see "System Triggers". A conditional trigger has a WHEN clause that specifies a SQL condition that the database evaluates for each row that the triggering statement affects. For more information about the WHEN clause, see "WHEN (condition)". When a trigger fires, tables that the trigger references might be undergoing changes made by SQL statements in other users' transactions.

FunctionsRegular Expressions FunctionsStatistical FunctionsLinear Regression FunctionsPL SQL Data TypesPL SQL StatementsPL SQL OperatorsPL SQL ProgrammingCursorCollectionsFunction Procedure PackagesTriggerSQL PLUS Session EnvironmentSystem Tables Data DictionarySystem PackagesObject OrientedXMLLarge ObjectsTransactionUser PrivilegeRaise Exception from http://www.java2s.com/Tutorial/Oracle/0560__Trigger/RaiseExceptionfromtrigger.htm trigger : Introduction«Trigger«Oracle PL/SQL TutorialOracle PL/SQL TutorialTriggerIntroductionSQL> -- create http://www.toadworld.com/platforms/oracle/b/weblog/archive/2010/07/14/raise-vs-raise-application-error demo table SQL> create table Employee( 2 ID VARCHAR2(4 BYTE) NOT NULL, 3 First_Name VARCHAR2(10 BYTE), 4 Last_Name VARCHAR2(10 BYTE), 5 Start_Date DATE, 6 End_Date DATE, 7 Salary Number(8,2), 8 City VARCHAR2(10 BYTE), 9 Description VARCHAR2(15 BYTE) oracle trigger 10 ) 11 / Table created. SQL> SQL> -- prepare data SQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, End_Date, Salary, City, Description) 2 values ('01','Jason', 'Martin', to_date('19960725','YYYYMMDD'), to_date('20060725','YYYYMMDD'), 1234.56, 'Toronto', 'Programmer') 3 / 1 row created. SQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, End_Date, Salary, City, Description) raise error in 2 values('02','Alison', 'Mathews', to_date('19760321','YYYYMMDD'), to_date('19860221','YYYYMMDD'), 6661.78, 'Vancouver','Tester') 3 / 1 row created. SQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, End_Date, Salary, City, Description) 2 values('03','James', 'Smith', to_date('19781212','YYYYMMDD'), to_date('19900315','YYYYMMDD'), 6544.78, 'Vancouver','Tester') 3 / 1 row created. SQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, End_Date, Salary, City, Description) 2 values('04','Celia', 'Rice', to_date('19821024','YYYYMMDD'), to_date('19990421','YYYYMMDD'), 2344.78, 'Vancouver','Manager') 3 / 1 row created. SQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, End_Date, Salary, City, Description) 2 values('05','Robert', 'Black', to_date('19840115','YYYYMMDD'), to_date('19980808','YYYYMMDD'), 2334.78, 'Vancouver','Tester') 3 / 1 row created. SQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, End_Date, Salary, City, Description) 2 values('06','Linda', 'Green', to_date('19870730','YYYYMMDD'), to_date('19960104','YYYYMMDD'), 4322.78,'New York', 'Tester') 3 / 1 row created. SQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, End_Date, Salary, City, Description) 2 values('07','David', 'Larry', to_date('19901231','YYYYMMDD'), to_date('19980212','YYYYMMDD'), 7897.78,'New York', 'Manager') 3 / 1 row created. SQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, En

SQL Server PRODUCTSDiscussion & Resources Benchmark Factory Code Tester for Oracle SharePlex SQL Navigator SQL Optimizer Spotlight Stat Toad Intelligence Central Toad Data Modeler Toad Data Point Toad Extension for Eclipse Toad for Hadoop Toad for IBM DB2 Toad for Oracle Toad for MySQL Toad for SQL Server Toad for SAP Solutions Toad MAC Edition Home » Platforms » Oracle » Oracle Blog » RAISE vs RAISE_APPLICATION_ERROR? RAISE vs RAISE_APPLICATION_ERROR? Oracle Community Join Overview Forum Blog Wiki Members Blog Options Print Comment RSS Feed Tweet Related Posts "Our" Error Codes : -20999 to -20000 by Steven Feuerstein on 3 Feb 2012 0 comments RAISE_APPLICATION_ERROR latest revision over 3 years ago by Steve Hilker Who needs comments? My code is self-documenting! AKA: Comment tersely with value-added information. by Steven Feuerstein on 28 Nov 2012 0 comments View More RAISE vs RAISE_APPLICATION_ERROR? Follow Steven Feuerstein / 7.14.2010 at 9:01pm A PL/SQL developer just sent me the following question: "I can't understand the difference between RAISE_APPLICATION_ERROR and RAISE. Why would I use one vs. the other?" Instead of answering via an email to just one developer, I thought I might share my answer with everyone. The RAISE_APPLICATION_ERROR built-in (defined in the DBMS_STANDARD package) should be used for just a single scenario: you need to communicate an application-specific error back to the user. Suppose, for example, I have a rule for the employees table that the minimum salary allowed is $100,000 (ah, wouldn't that be nice?). I want to enforce that rule through a database trigger: TRIGGER employees_minsal_tr BEFORE INSERT OR UPDATE ON employees FOR EACH ROWBEGIN IF :new.salary < 100000 THEN /* communicate error */ NULL; END IF;END; I can stop the DML from completing by issuing a RAISE statement, such as: RAISE PROGRAM_ERROR; But I would not be able to communicate back to the user what the actual problem was. If, on the other hand, I use RAISE_APPLICATION_ERROR, I can specify the error number (of l