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Message Posted: Wed, 09 May 2012 @ 13:59:24 GMT


     
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Subj:   Re: How to compress timestamp type
 
From:   Gregg, William

Hi Xuefeng -- I don't believe U can compress timestamp attributes with a list of values per MVC.

U may compress timestamp if it is null -- eg.:

     attribute_TS TIMESTAMP(0) COMPRESS

Locally, pre v13.10, MVC produced CurrentPerm savings of around 25-30% per table. Using v13.10 capabilities permitted compression of VARCHAR and added another 25-30% savings per table. On average, our big tables use half the PermSpace of the Uncompressed version.

A comment on the data behind the reporting above, there is a lot of VARCHAR in this shop.

Good Luck.


Rgrds,

Bill Gregg



     
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