Ardent Performance Computing
Oracle
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
Cache Buffers Chains and Latch Spelunking
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 … Continue reading
GC Buffer Busy Waits in RAC: Finding Hot Blocks
Well I don’t have a lot of time to write anything up… sheesh – it’s like 10pm and I’m still messing with this. I should be in bed. But before I quit for the night I thought I’d just do a quick post with some queries that might be useful for anyone working on a … Continue reading
Formula for db_file_multiblock_read_count
Just sent this to someone in an email and it seems like something that could be useful for everyone. They were asking how to determine the best setting for db_file_multiblock_read_count. First off, you probably will need assistance from a system admin or SAN admin if you’re running on a SAN. And contrary to one popular … Continue reading
Notes on 11g New Features, Part 1
I’ve been AWOL from the blogging world for quite awhile. Been busy for the past few weeks; working on another ITC white paper about RAC, assembled and delivered some internal 11g presentations and right now I’m in DC working with a client… all that has added up and kept me from blogging much. I had … Continue reading
Oracle 11g now on OTN for download!
Download Oracle 11g for Linux now! Looks like it just went up on OTN!!!
Log Buffer #55: a Carnival of the Vanities for DBAs
Ladies and gentlemen, boys and girls, cats, dogs, goats, cows, furry objects, Kevin Clossen, and whoever else may have accidentally stumbled here: the great blogosphere may have appeared to gradually slow. But fear no more, the tides are changing! You may now stop pinching yourself and trying to find your doctor’s phone number because this … Continue reading
Disclaimer
This is my personal website. The views expressed here are mine alone and may not reflect the views of my employer.
contact: schneider @ ardentperf.com
Ardent Performance Computing 
Recent Comments