This tutorial shows you how to deal with PL/SQL exception such as declaring user-defined exception, raising an exception and handling it.

Exceptions (PL/SQL runtime errors) can arise from design faults, coding mistakes, hardware failures, and many other sources. You cannot anticipate all possible exceptions, but you can write exception handlers that let your program to continue to operate in their presence.

Apr 28, 2018 · PL/SQL provides us the exception block which raises the exception thus helping the programmer to find out the fault and resolve it. There are two types of exceptions defined in PL/SQL. User defined exception. System defined exceptions. Syntax to write an exception. statement; END;

PL/SQL predefines some common Oracle errors as exceptions. For example, PL/SQL raises the predefined exception NO_DATA_FOUND if a SELECT INTO statement returns no rows. You can use the pragma EXCEPTION_INIT to associate exception names with other Oracle error codes that you can anticipate.

Sep 8, 2012 · Unless you are are doing something useful with the exception information, there is no need to catch it. The best way to pass exception information to the calling function is to do nothing, and let the exception naturally raise. This uses less code and preserves the real line number of the error. Just remove the DECLARE statement.

To raise an exception explicitly, you use the RAISE statement. The RAISE statement allows you to: Raise a user-defined exception. Raise an internally defined exception. Reraising the current exception. A user-defined exception is defined by users like you or other developers in the declaration section of a block or subprogram.

Jun 28, 2024 · In this tutorial, we learn Oracle PL/SQL Exception Handling with Examples. We also learn types of Exception, Predefined and User-defined Exception and how to Raise them.

In this chapter, we will discuss Exceptions in PL/SQL. An exception is an error condition during a program execution. PL/SQL supports programmers to catch such conditions using EXCEPTION block in the program and an appropriate action is taken against the error condition.

Oct 21, 2024 · PL/SQL provides structured ways to raise exceptions within code blocks. This process involves using the RAISE statement to trigger an error, followed by catching it in an EXCEPTION block. Syntax: custom_exception EXCEPTION; BEGIN . -- Some condition that may warrant raising a user-defined exception. IF some_condition THEN.

Oct 3, 2020 · This article explores the world of error management in PL/SQL: the different types of exceptions you may encounter; when, why, and how exceptions are raised; how to define your own exceptions; how you can handle exceptions when they occur; and how you can report information about problems back to your users.