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Group by Hash aggregation
So, Here I was merrily enjoying OpenWorld 2010 presentations in SFO, I got a call from a client about a performance issue. Client recently upgraded from Version 9i to Version 10g in an E-Business...
View ArticleRAC hack session – Tuesday – July 11 2011
I will be conducting a 1-hour deep dive session about RAC LMS process (and about LGWR processes too if time permits) using advanced UNIX utilities. Read Tanel’s blog entry for details: RAC hack...
View ArticleMy sessions in RMOUG 2012
I will be leaving to Denver in few days to talk about the following presentations in RMOUG 2012. Stop by and say hello to me if you intend to attend RMOUG training days. My sessions in RMOUG 2012 are...
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My COLLABORATE 12-IOUG sessions
If you are attending Collaborate 2012, you might be interested in my content-rich sessions below :Session Number: 326 Session Title: SCAN, VIP, HAIP, and other RAC acronyms Session Date/Time/Room: Tue,...
View ArticleOpen World 2012 – My Sunday presentation on truss, pstack etc.
Just a quick note, I will be presenting on “Truss, pstack, pmap, and more” talking about advanced UNIX utilities and how it can be utilized to understand inner working of an application or even Oracle...
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Demos do fail.
I am an ardent believer of “show me how it works” principle and usually, I have demos in my presentation. So, I was presenting “Tools for advanced debugging in Solaris and Linux” with demos in IOUG...
View Articlelibrary cache lock on BUILD$ object
I was testing an application performance in 12c, and one job was constantly running slower than 11g. This post is to detail the steps. I hope the steps would be useful if you encounter similar issue....
View ArticleCPU profiling using perf utility in Linux
After reading my blog entry about a performance issue due to excessive HCC decompression ( Accessing HCC compressed objects using index access path, a reader asked me about the CPU profiling method I...
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