difference between the management of the measure and segment management

friends, what is the fundamental difference between the measurement and management of the segment, as we know this segment is a collection of extensions so why is this necesassry to handle both?... and what to do?

Julien Chevallier wrote:
friends, what is the fundamental difference between the measurement and management of the segment, as we know this segment is a collection of extensions so why is this necesassry to handle both?... and what to do?

Oracle stores data in its own logical structure.

Blocks--> measure--> Segment

Oracle (also known under the name of page) block being the level of granularity where data is stored. To what extent is a collection of blocks.

When you specify the management of the measure, you mean where the allowance/disable-distribution of scopes (Group of blocks) will be managed (whether in the dictionary or using bitmap images).

When you specify the management of space segment, you mean that how will be managed within a block space. Extended management does not control the spatial distribution inside the block.

Kind regards
S.K.

Tags: Database

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