How do you declare a user-defined exception? › Category: Pl/SQL › How do you declare a user-defined exception? 0 Vote Up Vote Down Editor">Editor Staff asked 2 years ago How do you declare a user-defined exception? 1 Answers 0 Vote Up Vote Down Editor">Editor Staff answered 2 years ago You can declare the User defined exceptions under the DECLARE section, with the keyword EXCEPTION. Syntax: <exception_name> EXCEPTION;