Merge
- From: "Goulet, Richard" <Richard.Goulet@xxxxxxxxxxx>
- To: "ORACLE-L" <oracle-l@xxxxxxxxxxxxx>
- Date: Tue, 6 Jul 2010 08:26:12 -0400
All,
Not often that I ask for assistance from the list, but I'm a bit
baffled by this one.
We have a number of reporting tables that get populated every 15
minutes from an equal number of views. The developers are saying that
to run the reports off of the views is too long for customer acceptance.
The current process is to delete all rows form the tables, no not
truncate, that would be too easy. And then populate the tables with a
select * from the view in question. I'm looking at the merge command to
replace this and the tons of redo that it produces and has to be shipped
to a standby on a very small straw. To put is mildly the db is 74GB is
size & produces 150GB of redo a day. Now I'd simply shutoff the redo
for that tablespace, but they claim that the standby HAS to be able to
come up on a moments notice & be fully available. Yeah, this is a pile
of Duhvelopers.
Now Merge as I see it handles 90% of what we need, but my
problem is that if a row is not matched because it no longer exists in
the source view, how do you delete it?
Dick Goulet
Senior Oracle DBA/NA Team Lead
PAREXEL International
900 Chelmsford St, Suite 310
Lowell, MA 01821
978.614.2857
Richard.Goulet@xxxxxxxxxxx
http://www.parexel.com
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