RE: Keeping December partition through the year
- From: "Justin Cave (DDBC)" <jcave@xxxxxxxxxxx>
- To: <oracle-l@xxxxxxxxxxxxx>
- Date: Wed, 21 Apr 2004 09:30:07 -0600
You can drop any partition from a partitioned table and keep any
partition, so you can drop the January 04 partition when you no longer
need or want that data, keeping the December 03 partition indefinitely.
Of course, if you have automated this process and the process looks for
the earliest partition to drop, you will, of course, have problems.
You'll need to resolve these implementation problems, but there are no
database functionality problems to the situation you describe.
Justin Cave
Distributed Database Consulting, Inc.
http://www.ddbcinc.com/askDDBC
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of mkline1@xxxxxxxxxxx
Sent: Wednesday, April 21, 2004 9:18 AM
To: oracle-l@xxxxxxxxxxxxx
Subject: Keeping December partition through the year
We've got a repository that is quite large and so the data can at least
be partitioned by month. That's good.
But we've got December 2003 data they want to keep. We're now into
April... We normally only keep 3 months. What we do is truncate the
oldest partition and then load the newest. Eventually, I come along and
drop the unused partitions.
Now that we are holding 200312, can I safely drop 200401, and others as
time goes along, or do I need to keep ALL of them until next December?
We're using 100mb unform extents as these can go to 22gb per month, but
I could always move them to a 1M uniform tablespace once they are
truncated.
At this time the 200401 partition is empty, 200312, 200402,and 200403
have data. I'll be creating the 200404 in a couple of weeks. Before they
load that, they will truncate 200402.
It's 8.1.7.4 on HP-UX.
--
Michael Kline, Principle Consultant
Business To Business Solutions
13308 Thornridge Ct
Midlothian, VA 23112
804-744-1545
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