!! Please do not post Off Topic to this List !!
So if I understand you correctly, I should have rollback segments and temp segments
different for each of the different extent sizes I choice. So if I have tablespaces
with 128K, 1M and 4M I should have private rollbacks segments set up for each of
these.
Is the syntax for creating a rollback segment different for LMT? I know with
temporary tablespaces it is different.
Kathy
-----Original Message-----
Sent: Friday, September 14, 2001 1:50 PM
To: Multiple recipients of list ORACLE-L
!! Please do not post Off Topic to this List !!
Since you can't usually predict which rollback segment a particular transaction
is going to use anyway, generally accepted best practice is to create a
dedicated tablespace (or usually one per instance for OPS) for rollback
segments, "enough" rollback segments, and all rollback segments of the same
size, the same optimal, and the same extent sizes (obviously - there is no
"initial" or "next" in the syntax for creating a rollback segment itself). You
might also need a "monster" to use with "set transaction use rollback..." for
monster batch-like jobs and it could be an exception to the rule.
In the message(s) that I posted, the implication was that the "small set of
extent sizes for the entire database" would be for everything except SYSTEM,
RBS, and TEMP. The meaning is that if your choice of extent sizes was, for
example, 128K, 4M, and 128M, it would not restrict extent sizes for rollback or
temp to one of those values. Use extent sizes for rollback and temp that are
appropriate to each. Extent size for the TEMP tablespace should a function of
SORT_AREA_SIZE. (I'll let someone else take the baton on that one if
necessary.)
-Don Granaman
[OraSaurus - Honk if you remember UFI!]
Create rollback segments as you would for
----- Original Message -----
To: "Multiple recipients of list ORACLE-L" <[EMAIL PROTECTED]>
Sent: Friday, September 14, 2001 1:10 PM
> !! Please do not post Off Topic to this List !!
>
> How are you to create the rollback segments? Is this the same or different
from the other LMT tablespaces. I see where the Temporary Tablespaces are
different.
>
> Any other good LMT articles besides the one below? I want to change our
database into LMT and can you believe this was a brand new 8.1.6 database
created in April and they used LONG datatypes and other old architecture.
>
> Kathy
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