Is asmlib obsolete on a modern Linux system? I’m still undecided but starting to lean toward “yes”. Everybody knows that asmlib was very useful when it was first introduced with Oracle 10.1 to simplify a host of issues on Linux: direct async device access without raw devices, file permissions & ownership without custom code, and [...]
ASMLIB Performance vs Udev
October 8th, 2008 § 8 Responses
Collaborate Wrapup, RAC 11g/VMware Lab
April 24th, 2008 § 2 Responses
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 [...]
Monitoring Oracle on SMP with Hyper-Threading
June 21st, 2007 Comments Off
So I’ve really been digging Kevin Closson’s blog lately. Back at the beginning of this month he had another post that caught my attention about running Oracle on Opteron in which he made the point that these boxes should always be run in NUMA mode (not SUMA). This grabbed my eye because I’ve been delving [...]