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unique and mixed Extent


unique and mixed Extent

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gmkgvk
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what is unique extent, and mixed extent?
Igor Micev
Igor Micev
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Uniform extent: Its 8 pages are reserved and used by only one object
Mixed extent: Its pages are shared by multiple objects (data, indexes). The maximum number of objects that can use one extent is eight.

Igor Micev,
My blog: www.igormicev.com
aprathour.89
aprathour.89
Ten Centuries
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There is no such Unique extent !

Extents are logical units for data storage in database. They are combination of 8 data pages i.e. 64 KB.
Extents can be of two types UNIFORM and MIXED.
Uniform Extent - These types of extenct are dedicated to hold data pages for only one type of objects.
Mixed extent - These type of extent can hold different type of data pages like Index, System , Data pages etc.

-----------------
Aditya Rathour
SQL DBA

Not Everything that is faced can be changed,
but nothing can be changed until it is faced.
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