Re: p1 p2 - is it a header block?

Danes over 40 are no longer wanted on the list ;-)

DBA_SEGMENTS shows the header_file and header_block of a segment. There is a pointer in the to extent map block (if allocated and if you are using unlimited extents).
Those blocks are just part of the segment..

Anjo.

Mogens Nørgaard wrote:

> The "first" header block will have the lowest block number for that
> segment. When I say "first" I mean that in 7.3 (because of unlimited
> maxextents) they created a new type of "overflow" blocks that might in
> extreme cases also show up as the first blocks - I'm not sure, but Anjo
> or someone probably knows?
>
> Mogens
>
> (back on the list after mysteriousely being thrown out some time ago?).
>
> Greg Moore wrote:
>
> >If you have the file number and block number, you can find which segment it
> >is. (You find the block belongs to the EMP table.)
> >
> >Is there a way to tell if that block is the header block of the segment?
> >
>
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: Mogens =?ISO-8859-1?Q?N=F8rgaard?=
> INET: mln_at_miracleas.dk
>
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-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Anjo Kolk
  INET: anjo_at_oraperf.com

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