Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Predefined Exceptions
The internal exception is raised implicitly whenever your PL/SQL program exceeds a system-dependent limit or violates an Oracle rule. Each & every Oracle error has a number, but exceptions should be handled by the name. Therefore the, PL/SQL predefines some general Oracle errors as exceptions. For illustration, the PL/SQL raises the predefined exception NO_DATA_FOUND when a SELECT INTO statement returns no rows.
You can use the OTHERS handler, to handle the other Oracle errors. The SQLCODE & SQLERRM functions are primarily very helpful in the OTHERS handler since they return the message text & the Oracle error code. Otherwise, you can use the pragma EXCEPTION_INIT to relate an exception names with the Oracle error codes.
The PL/SQL declares predefined exceptions globally in the package STANDARD that defines the PL/SQL atmosphere. Therefore, you need not declare them yourself. You can write the handlers for predefined exceptions using the names shown in the list below. The corresponding Oracle error codes and SQLCODE return values are also shown.
A short description of the predefined exceptions is as shown below:
Defining and Declaring Collections To create the collections, you must define a collection type, and then declare the collections of that type. You can define the VARRAY types a
Question: (a) The objective of query optimization is to choose the most efficient strategy for implementing a given relational query, thereby improving the system performance. On
Advantages of PL/SQL The PL/SQL is a high-performance transaction processing, completely portable language that offers the following advantages as shown: 1) Support for SQL
Using COMMIT The COMMIT statements end the present transaction and make permanent any changes made during that transaction. Till you commit the changes, other users cannot acc
Using a join on 3 tables, select 5 columns and 10 rows from the 3 tables without the use of a Cartesian product Query: SELECT E.LAST_NAME, E.FIRST_NAME, S.BUILDING, S.BRAN
At times, customers make mistakes in submitting their orders and call to cancel the order. Brewbean’s wants to create a trigger that automatically updates the stock level of all pr
Managing Cursors The PL/SQL uses 2 types of cursors: implicit and explicit. The PL/SQL declares a cursor implicitly for all the SQL data manipulation statements, including th
Records Records are the items of the type RECORD. The Records have exclusively named fields that can store the data values of various types. And hence, a record treat associate
Declaring and Initializing Objects: An object type is once defined and installed in the schema; you can use it to declare the objects in any PL/SQL, subprogram, block or packa
Write a cursor to open an employee database and fetch the employee record whose age is greater than 45
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd