What is Oracle Edition Based Redefinition?

Edition-based redefinition (EBR) enables online application upgrade with uninterrupted availability of the application. Therefore, an existing session can continue to use the pre-upgrade application until its user decides to end it; and all new sessions can use the post-upgrade application.

What is EBR database?

Edition-Based Redefinition (EBR), a feature built directly into the Oracle Database, lets you upgrade the database component of an application in a separate “edition” while it is in use, thereby minimizing or eliminating downtime.

What is Editionable property in Oracle?

I understand that Oracle uses the term editionable to refer to the versioning of objects. Oracle allows editioning for tables (new in 12c), and starting in 11g release 2, we see editioning for PL/SQL functions and stored procedures, views, triggers, types and synonyms.

What are Editionable views in Oracle?

EDITIONABLE is a keyword relating to Edition-based Redefinition. This is a mechanism Oracle provides which allows us to support multiple versions of the same object in our database.

What is edition based redefinition in Oracle Database?

As you may recall from the last issue, Edition-Based Redefinition is the ability to perform an online application upgrade of your application. Oracle Database has historically allowed for many things to be done online, such as the following: Modify most parameters (only 90 out of 350 are not modifiable online)

Can a non editionable object be created in Oracle 12c?

Oracle 12c allows you to create non-editionable objects of these editionable types in an edition enabled schema. Related articles. Create a test user with editioning enabled. The CREATE [OR REPLACE] statement for editionable object types has been amended to allow the editionable status of the object to be controlled explicitly.

When to use edition based redefinition ( EBR )?

You always use the edition feature to copy the database objects and redefine the copied objects in isolation; that is why the procedure that this chapter describes for upgrading applications online is called edition-based redefinition (EBR).

Which is the default edition in Oracle Database 11g?

These objects can subsequently then be altered or dropped as desired, but doing so will stop inheritance of that object. From Oracle database 11g release 2 onwards, each database has at least one edition, the default being ORA$BASE. The default edition can be displayed using the DATABASE_PROPERTIES view.