Ardent Performance Computing
Linux
Robust Software Version Numbering
This article isn’t directly database-related, but I think it’s a great software engineering topic so it seemed worth writing about. Right now I’m involved in a project that involves releasing software packages of a few different flavors. Some of them are other people’s software that we’re re-packaging (like oracle database binaries) and some are code … Continue reading
Parsing LISTENER.ORA with awk and sed
Happy Thanksgiving to everyone in the US! And happy belated thanksgiving to everyone in Canada since you celebrated back at the beginning of October. :) I’ve been doing a lot of scripting work lately. Although I can’t write about everything I’m doing, I would like to post a pattern that I thought could be useful … Continue reading
Oracle Fully Automated Install and Patch
Before I started consulting, I was an Oracle engineer in a very large software development organization. The company had a number of major products and the one I worked with was used by hospitals and radiology offices world-wide. (These guys are one of the biggest companies worldwide in the field.) Our product included the hardware … Continue reading
ASMLIB Performance vs Udev
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 … Continue reading
Collaborate Wrapup, RAC 11g/VMware Lab
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 … Continue reading
Oracle Services on RAC at Collaborate
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! … Continue reading
Oracle IOPS and HBA Queue Depth
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 … Continue reading
Oracle Clusterware on RHEL5/OEL5 with udev and multipath
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 … Continue reading
Oracle I/O and Operating System Caching
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 … Continue reading
Monitoring Oracle on SMP with Hyper-Threading
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 … Continue reading
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contact: schneider @ ardentperf.com
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