How To Catch Insert Error In Pl/sql
Contents |
shot at without result. —Winston Churchill Run-time errors arise from design faults, coding mistakes, hardware failures, and many other sources. Although you cannot anticipate all possible errors, you can plan to handle certain kinds pl sql exception handling examples of errors meaningful to your PL/SQL program. With many programming languages, unless you disable
Oracle Raise Exception With Message
error checking, a run-time error such as stack overflow or division by zero stops normal processing and returns control to the functions for error trapping are contained in which section of a pl/sql block operating system. With PL/SQL, a mechanism called exception handling lets you "bulletproof" your program so that it can continue operating in the presence of errors. This chapter contains these topics: Overview of PL/SQL Runtime Error pl sql exception handling best practices Handling Advantages of PL/SQL 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 Tips for Handling PL/SQL Errors 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
Oracle Sqlerrm
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 statement. If there is no enclosing block, control returns to the host environment. The following example 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
Error Handling" in Oracle Database PL/SQL Language Reference. See the end of this chapter for TimesTen-specific considerations. The following topics are covered: Understanding exceptions Trapping exceptions Showing errors in ttIsql Differences in TimesTen: oracle predefined exceptions exception handing and error behavior Understanding exceptions This section provides an overview of exceptions pl/sql raises an exception in which two of the following cases in PL/SQL programming, covering the following topics: About exceptions Exception types About exceptions An exception is a PL/SQL error that is
Exception No Data Found Oracle
raised during program execution, either implicitly by TimesTen or explicitly by your program. Handle an exception by trapping it with a handler or propagating it to the calling environment. For example, if your SELECT statement https://docs.oracle.com/cd/B13789_01/appdev.101/b10807/07_errs.htm returns multiple rows, TimesTen returns an error (exception) at runtime. As the following example shows, you would see TimesTen error 8507, then the associated ORA error message. (ORA messages, originally defined for Oracle Database, are similarly implemented by TimesTen.) Command> DECLARE > v_lname VARCHAR2 (15); > BEGIN > SELECT last_name INTO v_lname > FROM employees > WHERE first_name = 'John'; > DBMS_OUTPUT.PUT_LINE ('Last name is :' || v_lname); > END; https://docs.oracle.com/cd/E11882_01/timesten.112/e21639/exceptions.htm > / 8507: ORA-01422: exact fetch returns more than requested number of rows 8507: ORA-06512: at line 4 The command failed. You can handle such exceptions in your PL/SQL block so that your program completes successfully. For example: Command> DECLARE > v_lname VARCHAR2 (15); > BEGIN > SELECT last_name INTO v_lname > FROM employees > WHERE first_name = 'John'; > DBMS_OUTPUT.PUT_LINE ('Last name is :' || v_lname); > EXCEPTION > WHEN TOO_MANY_ROWS THEN > DBMS_OUTPUT.PUT_LINE (' Your SELECT statement retrieved multiple > rows. Consider using a cursor.'); > END; > / Your SELECT statement retrieved multiple rows. Consider using a cursor. PL/SQL procedure successfully completed. Exception types There are three types of exceptions: Predefined exceptions are error conditions that are defined by PL/SQL. Non-predefined exceptions include any standard TimesTen errors. User-defined exceptions are exceptions specific to your application. In TimesTen, these three types of exceptions are used in the same way as in Oracle Database. Exception Description How to handle Predefined TimesTen error One of approximately 20 errors that occur most often in PL/SQL code You are not required to declare these exceptions. They are predefined by TimesTen. TimesTen implicitly raises the error. Non-predefined TimesTen error Any other standard TimesTen error These must be declared in the declarative
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 company Business Learn http://stackoverflow.com/questions/23239172/how-to-catch-constraint-violation-in-pl-sql more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags http://www.java2s.com/Code/Oracle/PL-SQL/Catchallexceptions.htm Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up How to catch constraint violation in PL/SQL? up vote 3 down vote favorite 1 CREATE TABLE LOCATION ( LOCID VARCHAR2(5) , MINQTY NUMBER , MAXQTY pl sql NUMBER , PRIMARY KEY (LOCID) , CONSTRAINT CHECK_LOCID_LENGTH CHECK (LENGTH(LOCID) = 5) , CONSTRAINT CHECK_MINQTY_RANGE CHECK (MINQTY BETWEEN 0 AND 999) , CONSTRAINT CHECK_MAXQTY_RANGE CHECK (MAXQTY BETWEEN 0 AND 999) , CONSTRAINT CHECK_MAXQTY_GREATER_MIXQTY CHECK (MAXQTY >= MINQTY) ); CREATE OR REPLACE PROCEDURE ADD_LOCATION_TO_DB(ploccode VARCHAR2, pminqty NUMBER, pmaxqty NUMBER) AS BEGIN INSERT INTO location(locid, minqty, maxqty) VALUES (ploccode, pminqty, pmaxqty); EXCEPTION WHEN DUP_VAL_ON_INDEX THEN RAISE_APPLICATION_ERROR(-20081, 'Duplicate Location ID'); WHEN OTHERS THEN RAISE_APPLICATION_ERROR(-20086,sqlerrm); END; I created the above pl sql exception table with constraints. Now I want to test these constraints in PL/SQL procedure by catching them in exceptions. But I'm confused how to do it. sql oracle plsql constraints check-constraint share|improve this question edited Apr 23 '14 at 11:14 user75ponic 5,86333116209 asked Apr 23 '14 at 8:45 Kaash 2014 sql-server doesn't use PL/SQL. Do you need a solution for both it and oracle? –Damien_The_Unbeliever Apr 23 '14 at 8:51 I want PL/SQL code for a procedure that inserts a row in location table and want to test the constraints in that pl/sql procedure. But i'm not sure about the code of how to check constraint. –Kaash Apr 23 '14 at 10:24 Yes, but you've tagged this question with two different products, and one of those products doesn't even have PL/SQL. Do you really need a solution for both products? –Damien_The_Unbeliever Apr 23 '14 at 10:25 I removed the sql-server tag because the question is clearly about Oracle and PL/SQL. –Gordon Linoff Apr 23 '14 at 11:05 There is no predefined exception for a check constraint violation (see here: docs.oracle.com/cd/E11882_01/appdev.112/e25519/…) you need to check the error code in the when others handler –a_horse_with_no_name Apr 23 '14 at 11:14 add a comment| 1 Answer 1 active oldest votes up vote 7 down vote accepted The error whic
ExpressionsReport Column PageResult SetSelect QuerySequenceSQL PlusStored Procedure FunctionSubquerySystem PackagesSystem Tables ViewsTableTable JoinsTriggerUser PreviliegeViewXMLCatch all exceptions : Exception Handle«PL SQL«Oracle PL / SQLOracle PL / SQLPL SQLException HandleCatch all exceptions SQL> SQL> SET ECHO ON SQL> DECLARE 2 X VARCHAR2(12) := 'Hello World!'; 3 BEGIN 4 DBMS_OUTPUT.PUT_LINE(X); 5 EXCEPTION 6 WHEN OTHERS THEN 7 DBMS_OUTPUT.PUT_LINE('An error occurred.'); 8 END; 9 / Hello World! SQL> SQL> Related examples in the same category1.Check exception type2.Deal with multiple exception branches3.when other exceptions then4.Handle update exception5.declaration exception6.handle exception of duplicate value on index7.when other then not user-defined exception8.Using PRAGMA EXCEPTION_INIT9.Different Values of SQLCODE and SQLERRM10.The OTHERS Exception Handler11.Error-handling features of PL/SQL: log exception12.PLS-483 error: Duplicate Handlers13.NO_DATA_FOUND exception.14.The scope of exceptions.15.Sub block in exception section16.Catch user-defined exception17.Check zero divide exception18.Combines declaring an EXCEPTION variable19.Insert error message to a table in exception handler20.Mapping a user-defined error code to an EXCEPTION variable21.This script demonstrates the EXCEPTION_INIT pragma.22.Error Handling Call23.Raise exception in if statementjava2s.com |Email:info at java2s.com|© Demo Source and Support. All rights reserved.