Tutorial by Topics: except

Objects of type Throwable and its subtypes can be sent up the stack with the throw keyword and caught with try…catch statements.

Errors detected during execution are called exceptions and are not unconditionally fatal. Most exceptions are not handled by programs; it is possible to write programs that handle selected exceptions. There are specific features in Python to deal with exceptions and exception logic. Furthermore, exceptions have a rich type hierarchy, all inheriting from the BaseException type.

Several Java programming language misusage might conduct a program to generate incorrect results despite being compiled correctly. This topic main purpose is to list common pitfalls related to exception handling, and to propose the correct way to avoid having such pitfalls.

Oracle produces a variety of exceptions. You may be surprised how tedious it can be to have your code stop with some unclear message. To improve your PL/SQL code's ability to get fixed easily it is necessary to handle exceptions at the lowest level. Never hide an exception "under the carpet", unless you're here to keep your piece of code for you only and for no one else to maintain.

The predefined errors.

Page 1 of 2