Oracle stores the avg_row_length in all_tables view.
Use analyze_schema to get the most recent numbers.
-----Original Message-----
Sent: Monday, May 21, 2001 12:12 PM
To: Multiple recipients of list ORACLE-L
Thanks for the info. I know about the VSIZE function,
but "how" do I estimate the amount of space manually?
What about negatives, fractional values, etc.? These
all require differing amounts of space.
Thanks again.
Walt
- "Toepke, Kevin M" <ktoepke_at_cms.cendant.com> wrote:
> Walter:
>
> You use the "VSIZE()" function. And you are right
> about 10000 not taking the
> same amount of size as 99999. 10000 uses 2 bytes and
> 99999 uses 4.
>
> SQL> select vsize(10000), vsize(99999) from dual;
>
> VSIZE(10000) VSIZE(99999)
> ------------ ------------
> 2 4
>
> Kevin
>
> -----Original Message-----
> Sent: Monday, May 21, 2001 1:56 PM
> To: Multiple recipients of list ORACLE-L
>
>
> Hi,
>
> How do I calculate the amount of physical space
> required for storing a number? (i.e. NUMBER,
> NUMBER(5), NUMBER(10,5), etc.) I believe Oracle uses
> "2's compliment" for storing numbers. A value of
> 10000
> does not seem to take up the same amount of space as
> 99999.
>
> TIA!
> -wk
>
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> Author: Walter K
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Received on Mon May 21 2001 - 13:21:40 CDT
