Friday, September 04, 2009

Oracle 11gR2 buzz and my "Thank You" to Oracle

re-Hi all, and nice to see everyone busy downloading/tweaking the 11gR2.

Must say I havnt really kept up with all the buzz, but when I looked at the new features I tried to be a-typical: I'll not go and sing praise to all the new complexities yet. I'm sure they are fine and wont cause serious trouble. They will come my way in due course.

My 11gR2 buzz ?
I'm on the lookout for the simple stuff that may just be of benefit to a large number of DBA grunts like me. For the moment, I will have to let someone else study the new intricacies of the upgraded script (Hi Martin, Jason!)

I have to fuss-up that the most high-tech "fixes" I did in the last year was around conventional locking (TX Enqueue, just app-logic, talk to the vendor), Dynamic-SQL (politely lean on the vendor of the app) tweaking CBO (and not even subtle, just applied some Tapio[link]) and the (system-)statistics. Most of my work didnt come close to proper rocket science, any of you could have done it. The bulk of my assignments seem to involve pushing people, rather then data-blocks. And my email-cc skills have greatly improved in the last months. Sigh.

Reading the "wotsnew", I still found several gems of simple (I hope) and possibly very usefull features.

There is at least one client that will be interested in "Instance Caging". The site that can benefit from this as the Developers have 100 small, but sometimes nasty databases running on a single machine with 24 CPUs. And sometimes they have an "oops" moment and one instance affects the whole (development) system. Reading up on "instance caging", it is dependent on Resource-manager. That sort of locks me in, I now Have to use this Resource manager malarky... (Guess I'm a Lazy Luddite at heart)

The IGNORE_ROW_ON_DUPKEY_INDEX may well be an instant hit. I will not be able to resist abuse of that one! The benefits are Obvious.
But... (there are at least two buts)
This new hint will lead to a lot of lazy-programmer-style stuff. Potentially as dangerous as the "whenever others" that Tom Kyte is sometimes on about.
And, on a more Friday-philosophical level [link to MWidlake], I dont like the fact that a Hint has an impact anywere but on the optimizer.
I can not stop Oracle from developing (useful!) stuff like this, but it puts "Hints" in a whole different part of the game. Food for thought there.

So let me politely say "Thank You" to Oracle for the new, simple, and easy-to-use(?) features. There are a few more ones, I will explore them further when time permits.

First got to do some prio stuff, such as booking trips and updating the Agenda [link]. Hope to see some of you in Real Life on a conference, a SIG, or a Gig somewhere.


Martin said...

Oh no, more stuff to try and learn! Isn't it about time Oracle released a version of the DBA that did not add stuff but just WORKED? :-)

I've already had discussions with one colleague about an option in 11.2 for getting Oracle to be more sensible about parallelization (I hate using that 'z') and my old team from the Sanger Centre are, I can't avoid it...centre stage at the Oracle UK "let's tell everyone about the new release" meeting on 30th September.
I'll be there, if only to see my old friends and drink some Oracle drinks, but then I will be back to the ORACLE 10 systems I work on day to day, just like the rest of us.

PdV said...


Careful, we dont want to become luddites.

Admittedly, the In-Memory PQ stuff looked promising to me too. Especially now that CPU and Memory are so abundantly available.

As for "study time", that is just the price we pay to keep our well-paid jobs. And the more complexity our customers deploy, the more mess there is for us to clean up and look clever. Innmit.


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