Comments on: Compulsive Tuning Disorder… http://www.oracle-base.com/blog/2009/05/29/compulsive-tuning-disorder/ Oracle related rants (and lots of off-topic stuff)... Sat, 11 Feb 2012 20:21:00 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Sarit http://www.oracle-base.com/blog/2009/05/29/compulsive-tuning-disorder/comment-page-1/#comment-111301 Sarit Fri, 18 Sep 2009 01:07:59 +0000 http://www.oracle-base.com/blog/?p=983#comment-111301 Totally agree about the 'focus" point. Every production database had dozens (and more) performance issues that could be fixed, but DBA should be able to find issues that cause the problem he is adressing. One of the methods I use is a combination od SQL and wait event based spike analysis that is applying clustering algorithm towards different aspects of database performance across SQL wait sibmetrics and different wait events (incuding ones that are RAC related). Resulting chart is 10x better than any report and enables to see issues and how they develop across timelines and RAC nodes. Totally agree about the ‘focus” point. Every production database had dozens (and more) performance issues that could be fixed, but DBA should be able to find issues that cause the problem he is adressing.

One of the methods I use is a combination od SQL and wait event based spike analysis that is applying clustering algorithm towards different aspects of database performance across SQL wait sibmetrics and different wait events (incuding ones that are RAC related). Resulting chart is 10x better than any report and enables to see issues and how they develop across timelines and RAC nodes.

]]> By: Dominic Delmolino http://www.oracle-base.com/blog/2009/05/29/compulsive-tuning-disorder/comment-page-1/#comment-109026 Dominic Delmolino Sun, 21 Jun 2009 12:12:39 +0000 http://www.oracle-base.com/blog/?p=983#comment-109026 ...and if you're still using those customized settings you set in Oracle7 in your current 10g system -- you really need an intervention :-) Heck, the first thing I do nowadays is go through the settings and rip out 80% of them, since the 10g defaults are usually much better. …and if you’re still using those customized settings you set in Oracle7 in your current 10g system — you really need an intervention :-)
Heck, the first thing I do nowadays is go through the settings and rip out 80% of them, since the 10g defaults are usually much better.

]]> By: joel garry http://www.oracle-base.com/blog/2009/05/29/compulsive-tuning-disorder/comment-page-1/#comment-108580 joel garry Mon, 01 Jun 2009 22:03:04 +0000 http://www.oracle-base.com/blog/?p=983#comment-108580 If you were using default settings in oracle7, you needed an intervention. If you were using default settings in oracle7, you needed an intervention.

]]> By: joel garry http://www.oracle-base.com/blog/2009/05/29/compulsive-tuning-disorder/comment-page-1/#comment-108579 joel garry Mon, 01 Jun 2009 22:00:37 +0000 http://www.oracle-base.com/blog/?p=983#comment-108579 A quick google, found it mentioned in a posting about IOUG 2002, referencing Gaja. In interview he says he came up with it 2001: http://searchoracle.techtarget.com/news/interview/0,289202,sid41_gci1075628,00.html An old, old problem that needed a name, for sure. A quick google, found it mentioned in a posting about IOUG 2002, referencing Gaja. In interview he says he came up with it 2001: http://searchoracle.techtarget.com/news/interview/0,289202,sid41_gci1075628,00.html

An old, old problem that needed a name, for sure.

]]> By: Tim... http://www.oracle-base.com/blog/2009/05/29/compulsive-tuning-disorder/comment-page-1/#comment-108546 Tim... Sun, 31 May 2009 07:41:17 +0000 http://www.oracle-base.com/blog/?p=983#comment-108546 Hi. I could have sworn it was you who mentioned it, but I must be wrong. I've removed your name from the post. :) I wasn't suggesting you suffer from CTD. Whoever said it was referring to it as being the wrong thing to do, so sort-of agreeing with me. :) Cheers Tim... Hi.

I could have sworn it was you who mentioned it, but I must be wrong. I’ve removed your name from the post. :)

I wasn’t suggesting you suffer from CTD. Whoever said it was referring to it as being the wrong thing to do, so sort-of agreeing with me. :)

Cheers

Tim…

]]> By: Arup Nanda http://www.oracle-base.com/blog/2009/05/29/compulsive-tuning-disorder/comment-page-1/#comment-108534 Arup Nanda Sat, 30 May 2009 22:34:07 +0000 http://www.oracle-base.com/blog/?p=983#comment-108534 Tim - sorry; you didn't hear about CTD from me during the Orcan conf. First, I definitely didn't refer to it. But more important, I sort of don't agree with the concept in general: so you surely didn't hear me mentioning it. Why I don't agree? Well, that's for another day. But I tend to think along the same lines you mention in this blog. Tim – sorry; you didn’t hear about CTD from me during the Orcan conf. First, I definitely didn’t refer to it. But more important, I sort of don’t agree with the concept in general: so you surely didn’t hear me mentioning it. Why I don’t agree? Well, that’s for another day. But I tend to think along the same lines you mention in this blog.

]]> By: Amit http://www.oracle-base.com/blog/2009/05/29/compulsive-tuning-disorder/comment-page-1/#comment-108514 Amit Fri, 29 May 2009 11:54:44 +0000 http://www.oracle-base.com/blog/?p=983#comment-108514 I remember reading about “Compulsive Tuning Disorder” (CTD ) in Oracle Insights co-written by Gaja Vaidyanatha. In case you have not read the chapter, I would recommend it..not only for technical knowledge but also to enjoy Gaja's humorous style of writing :) -Amit I remember reading about “Compulsive Tuning Disorder” (CTD ) in Oracle Insights co-written by Gaja Vaidyanatha. In case you have not read the chapter, I would recommend it..not only for technical knowledge but also to enjoy Gaja’s humorous style of writing :)

-Amit

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