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USING COST BASED OPTIMISATION ON A MULTI-PROCESSOR,MULTI-DISK DRIVE SERVER

From: <sudha_at_altasoft.com>
Date: Mon, 15 Mar 1999 22:14:08 GMT
Message-ID: <7ck0n5$l51$1@nnrp1.dejanews.com>


Hello!! In our company we are currently using a Production Environment which is Multi-cpu ( 4 processors ), Multi-disk drive ( Meaning the DataBase Table Data are spread across multi-disk drives) and the Oracle Version is 8.0.3. We are enforcing Cost Based and Rule based Hints in the Application SQL . The DataBase Load Average in Production shoots up very high immediately as soon as Statistics are added and the code containing hints are applied whereas on Test Machines which have half the RAM, HAlf the no of processors, Single disk drive, we don't see such abnormal Load Average shoot-up. I would definitely very much appreciate it if somebody could provide some suggestions as to what could be causing the Problem in Production and how to go about detecting it. Does adding Statistics on a Production Environment like the one mentioned above, create problems??? Reply to sudha_at_altasoft.com THANKS IN ADVANCE!!

-----------== Posted via Deja News, The Discussion Network ==---------- http://www.dejanews.com/ Search, Read, Discuss, or Start Your Own Received on Mon Mar 15 1999 - 16:14:08 CST

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