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From David Zanter <dzan...@gmail.com>
Subject Re: Database size larger than expected
Date Fri, 21 Oct 2011 21:32:17 GMT
Do you have Indexes on those Tables?


On Fri, Oct 21, 2011 at 5:29 PM, anthonyri <anthony.rich@inbox.com> wrote:

>
> Hi,
>
> I have a Derby database with two records, the first has 5000 records (of
> int, double, double, double, double - so approx 34 bytes per record), the
> second has 1000 records (of int, varchar(10), varchar(40) - so approx 102
> bytes per record).
>
> 5000 * 34 = 166k
> 1000 * 102 = 100k
> Total = 266k (if it was in a text file)
>
> What I don't understand is why the database (seg0 folder) is 1.2MB?
>
> I have compacted the database using;
>
> call SYSCS_UTIL.SYSCS_INPLACE_COMPRESS_TABLE('APP', 'mapObject', 1, 1, 1);
> call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('APP', 'MAPOBJECT', 1);
>
> Any thoughts please?
>
> Anthony
> --
> View this message in context:
> http://old.nabble.com/Database-size-larger-than-expected-tp32699233p32699233.html
> Sent from the Apache Derby Users mailing list archive at Nabble.com.
>
>

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