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Pl Sql Exception When Error Code

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Figure 10-1, Figure 10-2, and Figure 10-3 illustrate the basic propagation rules. Redeclaring predefined exceptions is error prone because your local declaration overrides the global declaration. Retrying a Transaction After an exception is raised, rather than abandon your transaction, you might want to retry it. unless you used the pragma EXCEPTION_INIT to associate the exception name with an Oracle error number, in which case SQLCODE returns that error number and SQLERRM returns the corresponding error message. http://setiweb.org/pl-sql/pl-sql-exception-error-code.php

Here you can list down as many as exceptions you want to handle. For user-defined exceptions, SQLCODE returns +1 and SQLERRM returns the message: User-Defined Exception. Topics: Declaring PL/SQL Exceptions Scope Rules for PL/SQL Exceptions Associating a PL/SQL Exception with a Number (EXCEPTION_INIT Pragma) Defining Your Own Error Messages (RAISE_APPLICATION_ERROR Procedure) Redeclaring Predefined Exceptions Declaring PL/SQL Exceptions If the INSERT succeeds, we exit from the loop immediately. https://docs.oracle.com/cd/A97630_01/appdev.920/a96624/07_errs.htm

Pl Sql Exception Handling Examples

RAISE statements can raise predefined exceptions, or user-defined exceptions whose names you decide. The technique is: Encase the transaction in a sub-block. However, if you exit with an unhandled exception, PL/SQL does not assign values to OUT parameters (unless they are NOCOPY parameters). When an error occurs, an exception is raised.

In Example 11-17, when n is zero, the calculation 1/n raises the predefined exception ZERO_DIVIDE, and control transfers to the ZERO_DIVIDE exception handler in the same block. Usenet source: Ken Quirici (c.d.o.server - 29-Oct-2004) Basic Exception Handling With Error Basic Block Structure Handling CREATE OR REPLACE PROCEDURE IS BEGIN NULL; EXCEPTION WHEN THEN For example, you might define an exception named insufficient_funds to flag overdrawn bank accounts. Functions For Error Trapping Are Contained In Which Section Of A Pl/sql Block Reraising a PL/SQL Exception Sometimes, you want to reraise an exception, that is, handle it locally, then pass it to an enclosing block.

Previous Page Print PDF Next Page Advertisements Write for us FAQ's Helping Contact © Copyright 2016. The FETCH statement is expected to return no rows eventually, so when that happens, no exception is raised. The stored procedure also had no error trap. Non-predefined exceptions include any standard TimesTen errors.

The message begins with the Oracle error code. Pl/sql Raises An Exception In Which Two Of The Following Cases Example 11-10 Explicitly Raising Predefined Exception DROP TABLE t; CREATE TABLE t (c NUMBER); CREATE PROCEDURE p (n NUMBER) AUTHID DEFINER IS default_number NUMBER := 0; BEGIN IF n < 0 You can also set it for a single compilation by including it as part of the ALTER PROCEDURE statement. You might store such information in a separate table.

Oracle Raise Exception With Message

You can define exceptions of your own in the declarative part of any PL/SQL block, subprogram, or package. https://docs.oracle.com/cd/E11882_01/timesten.112/e21639/exceptions.htm VALUE_ERROR ORA-06502 -6502 An arithmetic, conversion, truncation, or size constraint error occurred. Pl Sql Exception Handling Examples In the following example, you alert your PL/SQL block to a user-defined exception named out_of_stock: DECLARE out_of_stock EXCEPTION; number_on_hand NUMBER(4); BEGIN ... Pl Sql Exception Handling Best Practices If any other exception was raised, then statements_3 run.

So, an exception raised inside a handler propagates immediately to the enclosing block, which is searched to find a handler for the newly raised exception. get redirected here If the exception is ever raised in that block (including inside a sub-block), it will be handled. WHEN OTHERS THEN -- optional handler sequence_of_statements3 END; To catch raised exceptions, you write exception handlers. NO_DATA_FOUND 01403 +100 A SELECT INTO statement returns no rows, or your program references a deleted element in a nested table or an uninitialized element in an index-by table. Pl Sql Continue After Exception

To invoke RAISE_APPLICATION_ERROR, use this syntax: RAISE_APPLICATION_ERROR (error_code, message[, {TRUE | FALSE}]); You must have assigned error_code to the user-defined exception with the EXCEPTION_INIT pragma. To have the enclosing block handle the raised exception, you must remove its declaration from the sub-block or define an OTHERS handler. Unlike predefined exceptions, user-defined exceptions must be declared and must be raised explicitly by RAISE statements. navigate to this website Consider the following example: BEGIN DECLARE ---------- sub-block begins past_due EXCEPTION; due_date DATE := trunc(SYSDATE) - 1; todays_date DATE := trunc(SYSDATE); BEGIN IF due_date < todays_date THEN RAISE past_due; END IF;

If you specify TRUE, PL/SQL puts error_code on top of the error stack. Exception Part Can Be Defined Twice In Same Block If there is no handler for the exception, then PL/SQL returns an unhandled exception error to the invoker or host environment, which determines the outcome (for more information, see "Unhandled Exceptions"). Example 4-3 Using the RAISE_APPLICATION_ERROR procedure This example attempts to delete from the employees table where last_name=Patterson.

DECLARE huge_quantity EXCEPTION; CURSOR product_quantity is SELECT p.product_name as name, sum(o.total_units) as units FROM order_tems o, product p WHERE o.product_id = p.product_id; quantity order_tems.total_units%type; up_limit CONSTANT order_tems.total_units%type := 20; message VARCHAR2(50);

INVALID_NUMBER ORA-01722 It isn't a number, even though you are treating it like one to trying to turn it into one. Lets create a business rule that if the total no of units of any particular product sold is more than 20, then it is a huge quantity and a special discount It should be FALSE at other levels. */ PROCEDURE HandleAll(p_Top BOOLEAN); /* Prints the error and call stacks (using DBMS_OUTPUT) for the given module and sequence number. */ PROCEDURE PrintStacks(p_Module IN Exception No Data Found Oracle In the following example, you alert your PL/SQL block to a user-defined exception named out_of_stock: DECLARE out_of_stock EXCEPTION; number_on_hand NUMBER := 0; BEGIN IF number_on_hand < 1 THEN RAISE out_of_stock; --

The optional OTHERS exception handler, which is always the last handler in a block or subprogram, acts as the handler for all exceptions not named specifically. The number that SQLCODE returns is negative unless the Oracle error is no data found, in which case SQLCODE returns +100. You can avoid unhandled exceptions by coding an OTHERS handler at the topmost level of every PL/SQL program. my review here If a stored subprogram exits with an unhandled exception, PL/SQL does not roll back database changes made by the subprogram.

Regardless of the severity of the error, you want to leave the database in a consistent state and avoid storing bad data. TimesTen implicitly raises the error. A cursor FOR loop automatically opens the cursor to which it refers, so your program cannot open that cursor inside the loop. DUP_VAL_ON_INDEX A program attempts to store duplicate Every Oracle error has a number, but exceptions must be handled by name.

EXCEPTION WHEN NO_DATA_FOUND THEN INSERT INTO errors VALUES ('Error in statement ' || stmt); END; Copyright © 1996, 2002 Oracle Corporation. In Example 11-3, a procedure uses a single exception handler to handle the predefined exception NO_DATA_FOUND, which can occur in either of two SELECT INTO statements. SUBSCRIPT_BEYOND_COUNT ORA-06533 -6533 A program referenced a nested table or varray using an index number larger than the number of elements in the collection. Warnings not visible in PL/SQL Oracle Database does not have the concept of runtime warnings, so Oracle Database PL/SQL does not support warnings.

When you see an error stack, or sequence of error messages, the one on top is the one that you can trap and handle. You cannot return to the current block from an exception handler. Exception Propagation If an exception is raised in a block that has no exception handler for it, then the exception propagates. Example 11-2 Displaying and Setting PLSQL_WARNINGS with DBMS_WARNING Subprograms Disable all warning messages for this session: ALTER SESSION SET PLSQL_WARNINGS='DISABLE:ALL'; With warnings disabled, this procedure compiles with no warnings: CREATE OR

Handling Exceptions Raised in Declarations Exceptions can be raised in declarations by faulty initialization expressions. This package stores general error information in the errors table, with detailed call stack and error stack information in the call_stacks and error_stacks tables, respectively. Learn the names and causes of the predefined exceptions. You can also check for errors in a single statement by putting that statement inside a block with its own exception handler.

A GOTO statement cannot branch into an exception handler, or from an exception handler into the current block. If p_CommitFlag is TRUE, then the inserts are committed. WHEN ZERO_DIVIDE THEN -- handles 'division by zero' error DBMS_OUTPUT.PUT_LINE('Company must have had zero earnings.'); pe_ratio := NULL; WHEN OTHERS THEN -- handles all other errors DBMS_OUTPUT.PUT_LINE('Some other kind of error RAISE_APPLICATION_ERROR is part of package DBMS_STANDARD, and as with package STANDARD, you do not need to qualify references to it.