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Excel doesn’t have 3d charts but R does
I wanted to plot a set of data by 3 dimensions. I wanted to plot I/O read latency by MB/s throughput by number of concurrent readers....
kyle Hailey
Nov 5, 20138 min read


Browser Quirks and JSON Lint
Anyone want to look through the following JSON and spot the problem? {{“o_w_ms”:[[1313412960000 , 1.71 ],[1313413020000 , 2 ]],...
kyle Hailey
Nov 4, 20133 min read


Getting Started with Dtrace
Structure of a dtrace script #!/usr/sbin/dtrace -s probe_which_is_something_to_trace / filter_optional / { actions } ...
kyle Hailey
Nov 1, 20136 min read


Power of DISPLAY_CURSOR
photo by Latemodel Restoration Supply Oracle 10 added the awesome procedure dbms_xplan.display_cursor but unfortunately the documentation...
kyle Hailey
Oct 31, 20136 min read


NFS versus dNFS
NFS versus dNFS Finally got to take Kevin Closson’s SLOB for spin. (BTW can one test dNFS with Orion at all?) Nice write up on SLOB by...
kyle Hailey
Oct 30, 20136 min read


Oracle “Physical I/O” ? not always physical
A customer called and wanted to know why the development database was so much slower than production when both databases were on the same...
kyle Hailey
Oct 29, 20134 min read


Listener won’t register database
lsnrctl start lsnrctl stop lsnrctl start alter system register No dice. Then I tried alter system set local_listener=’(ADDRESS =...
kyle Hailey
Oct 28, 20131 min read


OOUG Performance Presentations
Had a great time last week presenting to the Ohio Oracle User Group (OOUG). I’m generally use to presenting a single presentation but for...
kyle Hailey
Oct 25, 20131 min read


Oracle 12c helps developers
I’m super excited about two aspects of 12c (among many). First is Oracle 12c EM Express which gives light weight access to Oracle...
kyle Hailey
Oct 3, 20132 min read


Oaktable World give aways Day 2
Thanks to a generous gift from Apress, every 10th arrival tomorrow to Oaktable World will win a copy of Pro Oracle Database 12c...
kyle Hailey
Sep 23, 20131 min read


Oaktable World 2013 Day 1
A few vignettes from this mornings Oaktable World. Kickoff from Mogens Nørgaard on some of the origins of Oaktable Network. John...
kyle Hailey
Sep 23, 20131 min read


Oaktable World 2013
A few vignettes from this mornings Oaktable World. Kickoff from Mogens Nørgaard on some of the origins of Oaktable Network. Fabian...
kyle Hailey
Sep 23, 20131 min read


Oracle World talks of interest
Here are some talks of interest during Oracle Open World other than Oaktable World where I’ll be all Monday and Tuesday of course...
kyle Hailey
Sep 21, 20134 min read


Alleviate load on SANs with Data Virtualization
by Matt Hayward One of the less obvious advantages of database virtualization is a reduction in the read I/O issued against the...
kyle Hailey
Sep 20, 20133 min read


Cache Everything Without Breaking the Bank
by Matt Hayward I’m often surprised at how small the buffer caches allocated to Oracle databases are. When I started as a DBA at Amazon...
kyle Hailey
Sep 19, 20134 min read


Lies, Damned Lies, and I/O Statistics
by Matt Hayward In collaboration with Kyle Hailey, Adam Leventhal, and others I’ve learned some rules of thumb for how to make accurate...
kyle Hailey
Sep 16, 20137 min read


Best Oracle Performance Tools
To get Delphix Express, the free version of Delphix, go to http://download.delphix.com and create an account, then log in. You should see...
kyle Hailey
Sep 13, 20133 min read


EMlight
EMlight might not be as important now with Oracle 12c coming out and with Oracle’s EM Express, but EMlight is still pretty cool. I...
kyle Hailey
Sep 12, 20132 min read


Lab128 : secret DBA performance tool
I’ve mentioned lab 128 before but I have to mentioned it again. Every DBA should know about this tool. It’s the fastest way to connect to...
kyle Hailey
Sep 11, 20131 min read


Confio Ignite
Catch Confio at Oaktable World Sept 23,24 in San Francisco People have been asking me recently, “what is the best enterprise database...
kyle Hailey
Sep 10, 20135 min read
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