Definition

extent

1) An extent is a set of contiguous blocks allocated in a database. In the Oracle database program, the first set of contiguous blocks, set up automatically when a segment is created, is called the initial extent. After the initial extent has been filled, the program allocates more extents automatically. These are known as next extents. The total number of extents that can be allocated in a database is limited by the amount of storage space available, or in some cases, by the program used.

2) The term extent is sometimes used in reference to any contiguous space (for example, a set of sectors) on a hard drive that is reserved for a particular file, folder, or application.

This was last updated in September 2005
Posted by: Margaret Rouse

Email Alerts

Register now to receive SearchOracle.com-related news, tips and more, delivered to your inbox.
By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy

More News and Tutorials

Do you have something to add to this definition? Let us know.

Send your comments to techterms@whatis.com

There are Comments. Add yours.

 
TIP: Want to include a code block in your comment? Use <pre> or <code> tags around the desired text. Ex: <code>insert code</code>

REGISTER or login:

Forgot Password?
By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy
Sort by: OldestNewest

Forgot Password?

No problem! Submit your e-mail address below. We'll send you an email containing your password.

Your password has been sent to: