Re: shrinking rollback segments

Sybrand,

Any reason for being so pissed off?
Johannes never mentioned he's using OPTIMAL. On the contrary he says he is NOT using it, and still seeing shrinks in v$rollstat. He is seeking an explanation for that.

Joahannes,
As for the problem itself: I don't see this behavior on any of my databases (of course I don't use optimal ;-) ), and perhaps you should double check your rbs-settings: optimal is really not being set?

regards,
Peter

"Sybrand Bakker" <postbus_at_sybrandb.demon.nl> schreef in bericht news:n1n8ju0vqn85ugrhhfncn8m2r5d2o6o7ef_at_4ax.com...
> On Tue, 16 Jul 2002 19:00:57 +0200, "Johannes" <johannes_at_merckle.de>
> wrote:
>
> >Hello all,
> >
> >I have 60 rollback segments set with storage option 'optimal NULL'.
> >Now I wonder myself why getting in v$rollstat much entries for the column
> >'shrinks' for each rollback segment.
> >Shoulnd't they stay extented until i explicitly say: alter rollback
segment
> >shrink ?
> >I restarted the DB, so there can't be any data from before. Or is it a
bug
> >like $GB? :-)
> >
> >Thanx for your help
> >Johannes
> >
> >
> Yeah sure, everything that doesn't work is automatically a bug.
> Why on earth BTW do you have 60 rollback segments.
> And implementing optimal was not one of Oracle's brightest moments:
> stay away from it, you are increasing the possibility of hitting
> ora-1555 snapshot too old.
>
> Regards
>
> Sybrand Bakker, Senior Oracle DBA
>
> To reply remove -verwijderdit from my e-mail address
Received on Wed Jul 17 2002 - 00:34:37 CDT