RE: RE: LMT ASSM & next extent
- From: "Niall Litchfield" <n-litchfield@xxxxxxxxxxxxxxxxxxxxxxx>
- To: <oracle-l@xxxxxxxxxxxxx>
- Date: Wed, 11 Feb 2004 13:51:39 +0000
Not necessarily so. I have a demo that suggests that auto-allocate *can* st=
ill suffer from the classic fragmentation problem of 'got enough free space=
but can't allocate an extent', Richard Foote has a subtly different exampl=
e that suggests that the circumstances under which this occurs are not easi=
ly predictable (i.e sometimes oracle will use small gaps and sometimes it w=
on't). I certainly haven't worked out what is going on anyway, and to be ho=
nest I'm so enamoured of uniform size that I probably won't. (SYSTEM should=
always be autoextend right?)
I attach a log of my example, the script is downloadable/runnable from http=
://www.niall.litchfield.dial.pipex.com/scripts/tests/auto_alloc_frag.sql an=
d assumes windows and 9i (or whenever drop tablespace including contents an=
d datafiles came in).=20
Niall Litchfield
Oracle DBA
Audit Commission
+44 117 975 7805=20
> -----Original Message-----
> From: thomas.mercadante@xxxxxxxxxxxxxxxxx=20
> Sent: 11 February 2004 13:35
> To: oracle-l@xxxxxxxxxxxxx; thomas.mercadante@xxxxxxxxxxxxxxxxx
> Subject: RE: RE: LMT ASSM & next extent
>=20
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> I do a similar thing. I run a weekly report producing a file=20
> that excel can
> open. I include a "Warning" message in the email header if=20
> any tablespace
> is more than 80% full. With LMT, I don't need to worry about=20
> individual
> tables any more - if there is room within the tablespace,=20
> then any table
> will be able to grab a new extent.
>=20
> Tom Mercadante
> Oracle Certified Professional
>=20
>=20
> -----Original Message-----
> From: ryan.gaffuri@xxxxxxx [mailto:ryan.gaffuri@xxxxxxx]
> Sent: Wednesday, February 11, 2004 8:28 AM
> To: oracle-l@xxxxxxxxxxxxx
> Subject: Re: RE: LMT ASSM & next extent
>=20
>=20
> is there a practical need to do that? I typically just turn=20
> autoextend on
> for all my files and have code that monitors the bytes in all=20
> my segments in
> a tablespace vs. the size of the datafile and I get an email=20
> if its close to
> filling up or if the datafile extends.=20
>=20
> is there a need for a more comprehensive approach?=20
> >=20
> > From: "Jamadagni, Rajendra" <Rajendra.Jamadagni@xxxxxxxx>
> > Date: 2004/02/11 Wed AM 07:26:20 EST
> > To: <oracle-l@xxxxxxxxxxxxx>
> > Subject: RE: LMT ASSM & next extent
> >=20
> > no.
> >=20
> > But if you are saving (err... exporting) dbms_stata output=20
> ... I can =3D
> > give you a SQL that will show you storage allocation pattern ...
> >=20
> > Raj
> >=20
> --------------------------------------------------------------
> -----------=3D
> > -------
> > Rajendra dot Jamadagni at nospamespn dot com
> > All Views expressed in this email are strictly personal.
> > QOTD: Any clod can have facts, having an opinion is an art !
> >=20
> >=20
> > -----Original Message-----
> > From: oracle-l-bounce@xxxxxxxxxxxxx
> > [mailto:oracle-l-bounce@xxxxxxxxxxxxx]On Behalf Of Jack van Zanen
> > Sent: Wednesday, February 11, 2004 7:18 AM
> > To: 'Oracle-L Freelists'
> > Subject: LMT ASSM & next extent
> >=20
> >=20
> > Hi=3D20
> >=20
> > I have my script that will monitor for objects that can not=20
> allocate =3D
> > their
> > next extent. However on databases using LMT with=20
> autoallocate I do not =3D
> > have
> > a value for next extent. How can I get this figure anyway,=20
> or is their a
> > view that will give me the space bound objects?
> >=20
> >=20
> > Tia
> >=20
> >=20
> > Jack
> >=20
> >=20
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