RE: unused blocks BELOW HWM

Gene,

I do not think you can do this with dbms_space.

The way I normally try to locate if the HWM of a table is too high is:

• analyze each table
• use avg_row_len and num_rows columns from user_tables to calculate the Used Space (you can also put pctfree and pctused into this equation).
• compare the Used Space to the HWM (allocated space - empty blocks -1)
• If the Used Space and HWM are considerably different then you should recreate the table to save *wasted space*.

I am sure this is not the most efficient way of doing this but it works for me.

Regards
Suhen

are u saying try it or are you saying that you can find this info using dbms_space;)

Thx
Deepak
--- "Sairlao, Chark" <SairlaoC_at_transfield.com.au> wrote:
> try dbms_space
>
> Thanks And Regards
> Chark Sairlao
>
>
> -----Original Message-----
> Sent: Tuesday, 18 December 2001 9:40
> To: Multiple recipients of list ORACLE-L
>
>
> no there is not .. unless someone corrects me that
> is
> ;)
>
> Deepak
>
>
> --- Gene Gurevich <g_u_r_e_v_i_c_h_at_yahoo.com> wrote:
> > Hi all:
> >
> > Is there a way for me to see how many blocks under
> > the HWM are unused?
> >
> > thanks
> >
> > Gene
> >

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Author: Suhen Pather
  INET: Suhen.Pather_at_strandbags.com.au

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