Re: Oracle Data Compression

I remember an instructor I had back in v6 days, who used to joke about, version 10 is the database that will totally self-sustaining, no DBA needed. Was he a visionary, bwaahahahahah, ok thats a joke ;)

joe

Carle, William T (Bill), ALCAS wrote:

>Howdy,
>
> I attended a seminar on Oracle data compression in version 9.2 this morning. There are no web-based handouts to look at. However, there are a few items on it that may be of interest:
>
>Data compression is based on duplicate fields
>Compression is only done on direct operations ( for example, an ordinary insert is not compressed)
>Indexed queries would not be any faster against compressed data (The index is not compressed, just the data.)
>Updates are 10-20% slower.
>Deletes are 10% faster.
>Full table scans are much faster.
>
>Bottom line is that this would mainly be used for a data warehousing application with lots of full table scans. It wouldn't be used for anything with lots of updating or online queries.
>
>Also, we were told that 9.2 is the terminal release of 9i. The next version will be 10i.
>
>
>Bill Carle
>AT&T
>Database Administrator
>816-995-3922
>wcarle_at_att.com
>

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