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RAC, parallel query and udpsnoop
I presented about various performance myths in my ‘battle of the nodes’ presentation. One of the myth was that how spawning parallel query slaves across multiple RAC instances can cause major...
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RAC performance tuning: Understanding Global cache performance
Global cache performance metrics are not correctly measured. It is not understood clearly either. There are even few blogs and web pages disseminating incorrect information. This blog entry is an...
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RMOUG 2010: My presentations
It is very disappointing to me that I had to cancel my trip to RMOUG training days. I am sick and was not able to catch the flight due to that. But, I can always share my presentations here. I had two...
View Article_gc_fusion_compression
We know that database blocks are transferred between the nodes through the interconnect, aka cache fusion traffic. Common misconception is that packet transfer size is always database block size for...
View ArticleGolden rules of RAC performance diagnostics
After collaborating with many performance engineers in a RAC database, I have come to realize that there are common pattern among the (mis)diagnosis. This blog about discussing those issues. I talked...
View ArticleRAC day with Ohio Oracle User Group
I will be talking about RAC and performance in-depth, with lots of demos, in a RAC day training with Ohio Oracle User group on Nov 16,2015 Monday. Venue for the presentation is Dublin, Ohio. Agenda...
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