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Example 11-4 Using PRAGMA EXCEPTION_INIT DECLARE deadlock_detected EXCEPTION; PRAGMA EXCEPTION_INIT(deadlock_detected, -60); BEGIN NULL; -- Some operation that causes an ORA-00060 error EXCEPTION WHEN deadlock_detected THEN NULL; -- handle the error END; Code: declare v_temp number:= 30; v_tot number; v_x number; v_y number; cursor c_temp is select x, y from a order by x; begin open c_temp; loop fetch c_temp into v_x, v_y; Make your programs robust enough to work even if the database is not in the state you expect. Because a block can reference only local or global exceptions, enclosing blocks cannot reference exceptions declared in a sub-block. http://back2cloud.com/pl-sql/pl-sql-ignore-error-and-continue.php

But when the handler completes, the block is terminated. ALTER PROCEDURE dead_code COMPILE; See Also: ALTER PROCEDURE, DBMS_WARNING package in the PL/SQL Packages and Types Reference, PLW- messages in the Oracle Database Error Messages Previous Next Copyright©1996, 2003OracleCorporation All Rights How can I write the exception clause to just go on without raising any error when an exception ocurrs? You can save the current state of the PLSQL_WARNINGS parameter with one call to the package, change the parameter to compile a particular set of subprograms, then restore the original parameter

Pl Sql Continue After Exception

Declaring PL/SQL Exceptions Exceptions can be declared only in the declarative part of a PL/SQL block, subprogram, or package. A pragma is a compiler directive that is processed at compile time, not at run time. That way, an exception handler written for the predefined exception can process other errors, as the following example shows: DECLARE acct_type INTEGER := 7; BEGIN IF acct_type NOT IN (1, 2, Hot Network Questions Why don't browser DNS caches mitigate DDOS attacks on DNS providers?

ALTER SYSTEM SET PLSQL_WARNINGS='ENABLE:ALL'; -- For debugging during development. You can avoid unhandled exceptions by coding an OTHERS handler at the topmost level of every PL/SQL program. oracle plsql triggers share|improve this question asked Aug 18 '09 at 20:51 Sam 1,89142240 8 "WHEN OTHERS THEN {do nothing}" is a very bad idea. User Defined Exception In Pl Sql The usual scoping rules for PL/SQL variables apply, so you can reference local and global variables in an exception handler.

I am designing a new exoplanet. You can also treat particular messages as errors instead of warnings. When an error occurs, an exception is raised. SUBSCRIPT_BEYOND_COUNT 06533 -6533 A program references a nested table or varray element using an index number larger than the number of elements in the collection.

Note: When using pragma RESTRICT_REFERENCES to assert the purity of a stored function, you cannot specify the constraints WNPS and RNPS if the function calls SQLCODE or SQLERRM. Oracle Continue Though they share the same name, the two past_due exceptions are different, just as the two acct_num variables share the same name but are different variables. If you recompile the subprogram with an ALTER ... Therefore, DBMS_UTILTY.FORMAT_ERROR_STACK is recommended over SQLERRM, except when using the FORALL statement with its SAVE EXCEPTIONS clause.

Pl Sql Exception In Loop

RAISE_APPLICATION_ERROR is part of package DBMS_STANDARD, and as with package STANDARD, you need not qualify references to it. http://www.dba-oracle.com/t_ignoring_oracle_ora_errors_in_plsql.htm However, other user-defined exceptions must be raised explicitly by RAISE statements. Pl Sql Continue After Exception This example was more about the fact of knowing about a specified Oracle error and ignoring it in an easy way. Pl Sql Exception Handling Examples You should have a look at DBMS_ASSERT to check it that it's a valid identifier and doesn't contain any other SQL commands.RegardsPatrick 06 December, 2009 12:19 Post a Comment ‹‹ Newer

However, some of the variables in the cursor will result in an error (integrity constraint), which, if I'm correct, by default ends the loop and exits the procedure. If you redeclare a global exception in a sub-block, the local declaration prevails. NOT_LOGGED_ON 01012 -1012 A program issues a database call without being connected to the database. Execution of the handler is complete, so the sub-block terminates, and execution continues with the INSERT statement. Pl Sql Exception Handling Best Practices

It could represent a mistake, or it could be intentionally hidden by a debug flag, so you might or might not want a warning message for it. Related 5How to handle multiple Oracle homes?2PLSQL Package - Catching Errors in procedure (Oracle)1Oracle Alternative to EXISTS EXCEPT3How to raise_application_error beyond a when others clause1How to set the sequence to the Can a bike computer be used on the rear wheel? The keyword OTHERS cannot appear in the list of exception names; it must appear by itself.

Using DBMS_WARNING Package If you are writing PL/SQL subprograms in a development environment that compiles them, you can control PL/SQL warning messages by invoking subprograms in the DBMS_WARNING package. Pl Sql Exception When Others For example, in the following procedure, the NO_DATA_FOUND exception is handled directly, while all other exceptions are raised to the calling block: CREATE OR REPLACE PROCEDURE MY_PROCEDURE() IS BEGIN do_stuff(); EXCEPTION 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.

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As the following example shows, use of the OTHERS handler guarantees that no exception will go unhandled: EXCEPTION WHEN ... But the enclosing block cannot reference the name PAST_DUE, because the scope where it was declared no longer exists. Example 11-3 Scope of PL/SQL Exceptions DECLARE past_due EXCEPTION; acct_num NUMBER; BEGIN DECLARE ---------- sub-block begins past_due EXCEPTION; -- this declaration prevails acct_num NUMBER; due_date DATE := SYSDATE - 1; todays_date Functions For Error Trapping Are Contained In Which Section Of A Pl/sql Block Errors are especially likely during arithmetic calculations, string manipulation, and database operations.

In this case however Tobias is capturing a very specific exception (ORA-02024).Personally I think it depends how you look at this, i.e. For example, let's assume that we want to ignore the ORA-00955 error, where a table already exists. You can write handlers for predefined exceptions using the names in the following list: Exception Oracle Error SQLCODE Value ACCESS_INTO_NULL ORA-06530 -6530 CASE_NOT_FOUND ORA-06592 -6592 COLLECTION_IS_NULL ORA-06531 -6531 CURSOR_ALREADY_OPEN ORA-06511 -6511 If an error occurs in the sub-block, a local handler can catch the exception.

Advantages of PL/SQL Exceptions Using exceptions for error handling has several advantages. In my special case there shouldn't be an error if no database link exists.Here is the code snippet for it:declare-- error variablev_no_link EXCEPTION;-- Map error number returned by raise_application_error to user-defined Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the Unlike variables, exceptions cannot appear in assignment statements or SQL statements.

Continuing after an Exception Is Raised An exception handler lets you recover from an otherwise fatal error before exiting a block. Burleson Consulting The Oracle of Database Support Oracle Performance Tuning Remote DBA Services Copyright © 1996 - 2016 All rights reserved by Burleson Oracle is the registered trademark of Thanks for the info. 17 November, 2009 08:29 Kevan Gelling RAISE_APPLICATION_ERROR will not work as it's restricted to error code between -20000 and -20999.If you insist on WHEN OTHERS then you This parameter can be set at the system level or the session level.

You code the pragma EXCEPTION_INIT in the declarative part of a PL/SQL block, subprogram, or package using the syntax PRAGMA EXCEPTION_INIT(exception_name, -Oracle_error_number); where exception_name is the name of a previously declared The procedure in Example 11-16 has unnecessary code that can be removed.