Advice needed on Waits and Timeouts - 8i on HPUnix

I need some straight advice...We are running 8i on HPUnix. We have been tuning this thing for 6 weeks now and have most things under control (disk I/O, various cache hit ratios, etc.)...but...we still see a large number of waits...at least I think its a large number.
Question 1. If the instance has been up for 72 hours and I see a count of io done waits for DBW0 of 2,966,179 with 78041 timeouts (as an example), is this a large number? Nothing I have seen in the Oracle documentation gives me a sense of scale.
Question 2. What events do we have the ability to tune?
Question 3. For those that we can tune...how do you tune them?
Kurt
813 483 2153

I need some straight advice...We are running 8i on HPUnix. We have been tuning this thing for 6 weeks now and have most things under control (disk I/O, various cache hit ratios, etc.)...but...we still see a large number of waits...at least I think its a large number.
Question 1. If the instance has been up for 72 hours and I see a count of io done waits for DBW0 of 2,966,179 with 78041 timeouts (as an example), is this a large number? Nothing I have seen in the Oracle documentation gives me a sense of scale.
Question 2. What events do we have the ability to tune?
Question 3. For those that we can tune...how do you tune them?
Kurt
813 483 2153

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