Re: p1 p2 - is it a header block?

Anjo!

don't leave us in suspense... pointer in where to the extent map? :)

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|        |          anjo_at_oraperf.|
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|        |          05/08/2002   |
|        |          09:13 AM     |
|        |          Please       |
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|        |          ORACLE-L     |
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  |       To:     ORACLE-L_at_fatcity.com                 |
  |       cc:     (bcc: Rachel Carmichael)             |
  |       Subject:     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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Author: 
  INET: Rachel_Carmichael_at_Sonymusic.com

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