RE: NT -> Win2K causes performance degradation..

Mark,

        I have not done a MicroSlop upgrade, but I have in the past upped the SGA size and gotten when I really did not want, which was database performance degradation. You might ask them to check the pagefile size. If it's system maintained or too small funny things do happen. BTW: My rule of thumb with Win2K is pagefile size = physical memory *1.5.

Dick Goulet
Senior Oracle DBA
Oracle Certified 8i DBA

-----Original Message-----
Sent: Wednesday, December 10, 2003 4:04 AM To: Multiple recipients of list ORACLE-L

Hi All,

We've been asked a question from one of our clients that I'm a little stumped on.

They run an OLTP database (Oracle 8.1.7), and have recently upgraded their NT machine to Windows 2000, they were running with 2gb of memory, and upgraded that to 4gb in the process. As they increased physical memory, they also increased their SGA size & db_block_buffers.

Since they've upgraded they have noticed a significant decrease in performance (the way it was described to me was "it was 7 out of 10, and is now 3 out of 10"..).

Has anybody else done a system upgrade of this nature that has caused less than desirable effects? Any pointers as to what to look at? We've requested some stats (top wait stats etc.) and I'll feed these back as and when I get them - but I thought I'd throw this out to you guys in the vague hope that someone has experienced some relatively similar experiences.

Cheers!

Mark

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