EMC XtremIO – The Full-Featured All-Flash Array. Interested In Oracle...
NOTE: There’s a link to the full article at the end of this post.I recently submitted a manuscript to the EMC XtremIO Business Unit covering some compelling lab results from testing I concluded earlier...
View Articleinmemory area is another sub-heap of the top-level SGA heap
I blogged earlier about heap dump shared pool heap duration and was curious to see how the inmemory – 12.1.0.2 new feature – is implemented. This is a short blog entry to discuss the inmemory area...
View ArticleVisualizing AWR data using python
In my earlier post, I talked about, how tableau can be used to visualize the data. In some cases, I find it useful to query AWR base tables directly using Python and graph it using matplotlib package...
View ArticleSLOB Physical I/O Randomness. How Random Is Random? Random!
I recently read a blog post by Kyle Hailey regarding some lack of randomness he detected in the Orion I/O generator tool. Feel free to read Kyle’s post but in short he used dtrace to detect Orion was...
View ArticleOOW14 Session: SQL Tuning Without Trying
Many thanks to all those who attended my session "SQL Tuning without Trying" at Oracle Open World 2014 #oow14. I hope you found the session useful.If you want to download the slide deck, here it is. As...
View ArticleCache Buffer Chains Demystified
You must have seen sessions waiting on the event “latch: cache buffers chains” from time to time. If you ever wondered what this means and how you can reduce time spent on it, read on.read more
View ArticleDemos 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 ArticleWhitepaper: Oracle Database 11g and 12c Consolidation and Workload...
This is a just a quick blog post to direct readers to the best Oracle-related paper detailing the value EMC XtremIO brings to Oracle Database use cases. I’ve been looking forward to the availability...
View ArticleNYOUG Session: Latches Demystified
Thank you all those who came to attend my session on demystifying latches at New York Oracle Users Group in Manhattan. I hope you found the session useful and enjoyable. read more
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...
View ArticleClik here to view.
OOUG RAC day presentation files and scripts
Thanks for coming to my presentations in RAC day at Dublin, Ohio. Please find the presentation files below. Hopefully, I will get video files and upload that here too. OOUG presentation files and...
View ArticleClik here to view.
OTNYathra2016
Over the last many years, some of you have invited me to attend conferences in India, and talk about Oracle RAC and performance. I have not had an opportunity to make it to conferences in India, until...
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 ArticleAccessing HCC compressed objects using an index
Problem I came across another strange SQL performance issue: Problem was that a SQL statement was running for about 3+ hours in an User Acceptance (UA) database, compared to 1 hour in a development...
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...
View ArticleSLOB 2.3 Data Loading Failed? Here’s a Quick Diagnosis Tip.
The upcoming SLOB 2.4 release will bring improved data loading error handling. While still using SLOB 2.3, users can suffer data loading failures that may appear–on the surface–to be difficult to...
View ArticleClik here to view.
RMOUG Training days 2017
I will be speaking about the following topics in Rocky Mountain Oracle User group Training days (RMOUG, Denver) February 7-9, 2017.Come to my presentations and say Hi to me
View ArticleIOUG Collaborate 2017
I have a few presentations scheduled in IOUG Collaborate 2017, Las Vegas.1. Session: 621: RAC Clusterware internals **Date/time: Mon, Apr 03, 2017 (01:30 PM – 02:30 PM) : Jasmine A2. Session: RAC cache...
View ArticleSLOB Chewed Up All My File System Space and Spit It Out. But, Why?
This is a quick blog post in response to a recent interaction with a SLOB user. The user reached out to me to lament that all her file system space was consumed as the result of a SLOB execution...
View Article