I believe that the UNUSED_BLOCKS return
value refers to blocks that have never been used,
which would be blocks above the HWM.
Jared
Suhen Pather
<Suhen.Pather@strandba To: Multiple recipients of list
ORACLE-L <[EMAIL PROTECTED]>
gs.com.au> cc:
Sent by: Subject: RE: unused blocks BELOW
HWM
[EMAIL PROTECTED]
12/17/01 04:45 PM
Please respond to
ORACLE-L
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" <[EMAIL PROTECTED]>
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 <[EMAIL PROTECTED]> 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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