So Collaborate is over and I’m back in Chicago… home sweet home. I thoroughly enjoyed the week in Denver, in spite of the snow! Thursday, the last day, was especially fun. First was a panel debate “To RAC or Not To RAC: What’s Best for HA.” Dan Norris invited me to participate in this panel [...]
Oracle Services on RAC at Collaborate
April 16th, 2008 § 4 Responses
Just a quick post to say that I’ve uploaded the slides from my services presentation at Collaborate and you can find them over on the publications page. Thanks to everyone who attended!! Great questions and comments throughout the session. Next time I’ll try to get through everything faster so that there’s more time for Q&A! [...]
Oracle IOPS and HBA Queue Depth
March 13th, 2008 § 7 Responses
About a month ago I wrote an overview of Linux Caching and I/O Queues as they pertain to Oracle. I was working on a project to architect, install and configure the beginnings of an 8-node cluster consisting of either one or two RAC databases. During the project, while I was waiting for the OS guys [...]
Oracle Clusterware on RHEL5/OEL5 with udev and multipath
February 13th, 2008 § 35 Responses
The trouble with Linux? No… the trouble with computers in general – is that they keep changing! Solaris 10 comes out, Oracle 11g, Red Hat 5… and everything works different!! It’s a full-time job just trying to keep up with everything. Almost exactly one year ago I wrote about using udev on 2.6 kernels to [...]
Oracle I/O and Operating System Caching
January 31st, 2008 § 7 Responses
Well it’s been awhile since I’ve written anything for the blog – during the past four months I went on a trip to Asia, celebrated Thanksgiving and Christmas with both my family and my girlfriend’s family and then in January I got engaged! I’ve also been working on some continuing educational goals – so needless [...]
Two days until Asia! Trip Update.
September 27th, 2007 Comments Off
Two days until I leave for Asia. (You have no idea how busy I’ve been for the past month!) If anyone’s curious about trip details I’ve posted about it over on the non-technical side of my blog.
Cache Buffers Chains and Latch Spelunking
September 13th, 2007 § 4 Responses
Last night I posted a case study where I used the AWR (a blessed new feature) to investigate “gc buffer busy” wait events in a RAC environment. I concluded the write-up by theorizing that the single freelist was pointing all nodes of the cluster to the same small group of blocks for inserts and thereby [...]