Re: determine rollback segments initially when installing Oracle 8i?

The formula is and has ever been:
1 rollback segment per 4 users, rounded up, with a minimum of 4. Size can only be determined with trial and error.

Hth,

Sybrand Bakker, Oracle DBA

David Spaisman <davedba_at_intercall.net> wrote in message news:38DEDAD5.334F2F1A_at_intercall.net...
> Hello:
>
> I may be shortly installing Oracle 8i as part of an effort to convert
> an application from microsft sql server to Oracle 8.1.5.
>
> For Oracle 8.0.4/Oracle 6.05, I generally start with 5 rollback segments
> as aprt of creating an instance. And then proceed to monitor the wraps
> and extends.
>
> I have, however, been reading that the installation, of Oracle 8i, or
> the creation of an Oracle instance, is based upon of a formula.
>
> For Oracle 8.0.4 , I have, for the given applications I work with, not
> been able to determine the transaction size
> so that the correct number of rollback segments can be initially
> created.
>
> 1) For Oracle 8.0.4/Oracle 8.05, is there another formula or method I
> can use to determine the correct number od rollback segments initially
> at instance creaton?
>
> 2) For Oracle 8.1.5, what is the formula needed to correctly calculatee
> the number of rollback segments at instance creation time?
>
> Any information will be appreciated. THanks you.
>
> DAvid Spaisman
>
>
Received on Mon Mar 27 2000 - 00:02:48 CST