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Home -> Community -> Mailing Lists -> Oracle-L -> RE: How to model DBA_SEGMENTS for trend analysis?
I cheat. My segment history table does not have a PK. Instead, I use a UK which allows the partition name to be null. Your boss probably wouldn't like me very much 8-)
Kevin Kennedy
First Point Energy Corporation
-----Original Message-----
Sent: Wednesday, June 05, 2002 7:08 AM
To: Multiple recipients of list ORACLE-L
This is rather a simplistic question, but how would you model the DBA_SEGMENTS table for trend analysis purposes? Simply duplicate the table and add a TIMESTAMP (which is what I wanted to do.)
Even though it's *my* project, my boss, insists on being the DA, is adamant that all trend tables include 'natural, complete' business keys. If you follow this logic with respect to DBA_SEGMENTS, you then run into a problem with a PK including PART_NAME which is going to be null for most records in the table, but is necessary to enforce uniqueness. So, not liking this, he then gets the idea that partitions are nothing more then 'sub-segments' with a a 'parent segment' and now wants to see a segments trend table with a self-referencing relationship, PARENT_SEGMENT_NAME, and so forth.
I've argued up and down and all around, and of course, my boss, being the typical, stubborn, old fart Sr DBA, refuses to listen.
So, I'm just wondering how you trap DBA_SEGMENTS info at your site.
Thanks.
Email: thomasje_at_tce.com
Indy DBA Master Documentation available at:
http://gkmqp.tce.com/tis_dba
Select 'Indy DBA' then 'DBA Web Pages'
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Please see the official ORACLE-L FAQ: http://www.orafaq.com
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Author: kkennedy
INET: kkennedy_at_firstpoint.com
Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists --------------------------------------------------------------------To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). Received on Wed Jun 05 2002 - 14:54:59 CDT
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