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Information about Pages, row versions of tables, indices

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Hello!

Is there some information in meta tables available about the number of pages currently unused, row versions of tables and indices which are unused?

I'm asking because I want to measure how efficient HOT is working and whether vacuum should be run or not saving diskspace (I know this is done automatically).

Thanx.

Ciao,
Gerhard

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http://www.wiesinger.com/

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