RE: Top 10 DBA Do's and Don'ts anyone - Here is my list,

Actually, I have quite a bit of text associated with each of my 10 do's and don'ts... in the text of each, I actually state what you are saying. That is, that there are actually very few hard and fast rules about anything. For example with ASSM I suggest that in 9i it's probably not usable, and if you think you might benefit from it, test it first. So, I never discount anything totally.

What I *believe* I've heard Cary say in the past was something to the effect that tuning LIO's will generally have a resultant impact on PIO's, and in the associated text that is the point I make. I am awaiting Cary's book with anticipation myself!!!

I actually don't believe in anything hard and fast when it comes to this world known as Oracle.

RF

Robert G. Freeman
Technical Management Consultant
TUSC - The Oracle Experts www.tusc.com
904.708.5076 Cell (It's everywhere that I am!) Author of several books you can find on Amazon.com!

-----Original Message-----
Sent: Sunday, February 23, 2003 5:49 PM
To: Multiple recipients of list ORACLE-L

Yes, regarding these 3, how can they be considered absolute do's or don'ts? I didn't take Cary's material to mean ignore physical IO's but rather to show the importance and impact of logical IO's. Too many PIOs could still be an issue.
(I would say maybe Cary could speak to this, but I'd rather him spend that time on his book, which I'll be ordering as soon as it's available.) The others have their places as well. I wouldn't practice or preach that bind variables are always, always the right way (usually, but not always). Why not ASSM? Surely, there could be circumstances where ASSM is a good way, or at least ok.
Do Use Bind Variables
Do tune to Reduce Logical IO's Not Physical IO's. Don't Use ASSM

Please consider, Robert, that I'm not challenging your list as these may be very good rules to live by. I don't usually take any 'rule' as hard and fast until I can test it, but there may be others reading the list that would benefit greatly to understand why these things should or should not be done.
Thanks for your input, it helps us all learn.

Darrell Landrum

>>> FREEMANR_at_tusc.com 02/23/03 04:23PM >>> Here is the list of top 10 do's and don't that I came up with.

#1 - Do Maintain your Expertise
#2 - Do Use the DBMS_STATS Package to Collect Statistics
#3 - Do Use Bind Variables
#4 - Do Put your Production Database in ARCHIVELOG Mode
#5 - Do Use Locally Managed Tablespaces
#6 - Do Monitor Your Database
#7 - Do Practice Recoveries
#8 - Do Get Involved with User Groups and Other Resources
#9 - Do Establish Standards and Change Control Processes
#10 - Do Think Ahead

Bonus! - Do tune to Reduce Logical IO's Not Physical IO's. (With regards to Cary!)

Oracle Database Top 10 Don'ts
#1 - Don't Waste Time Re-Organizing Your Databases
#2 - Don't Use .Log or Other Common Extensions For Your Database File Names
#3 - Don't Leave Your Database Open To Attack
#4 - Don't Decide Against Hot Backups
#5 - Don't Use ASSM
#6 - Don't Forget the 80/20 Rule
#7 - Don't Stack Views
#8 - Don't Be a Normalization Bigot
#9 - Don't Forget to Document Everything
#10 - Do Not Use Products You are Not Licensed For.

Bonus!! - Do Not Assume A Good or Bad Hit Ratio Means Anything

Ok, anyone wanna comment?

Robert G. Freeman
Technical Management Consultant
TUSC - The Oracle Experts www.tusc.com
904.708.5076 Cell (It's everywhere that I am!) Author of several books you can find on Amazon.com!

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