A few days ago I wrote about my new lab server and the misfortune with kernel UEK (aka 2.6.32 + backports). It simply wouldn’t recognise the memory in the server:
# free -m total used free shared buffers cached Mem: 3385 426 2958 0 9 233 -/+ buffers/cache: 184 3200 Swap: 511 0 511
Ouch. Today I gave it another go, especially since my new M4 SSD has arrived. My first idea was to upgrade to UEK2. And indeed, following the instructions on Wim Coekaerts’s blog (see references), it worked:
It’s been a few days since the final release of Fedora 17. I’ve been running it on VMs since the alpha release, but the day after the final release I decided to upgrade a real Fedora 16 machine. That’s where all the fun started…
I’ve now attempted Fedora 16 -> 17 upgrades on two physical servers and both have been destroyed by the process. In both cases, I had to do a fresh install, which worked cleanly and left a fully functioning installation. Perhaps I’m just very unlucky, but with a record of 0 for 2, my conclusion is that the upgrade process on Fedora 17 sucks so much ass it’s untrue.
As followers of the blog know, I try to keep my host machines pretty clean and do anything of significance in VirtualBox VMs. As a result, the recovery of both systems has been fine, if a little slow. In both cases, I did a clean install, then copied back all the VMs and that was pretty much it.
Fedora 17 was released yesterday. I mentioned in a previous post I had run through the installation of Oracle 11gR2 on Fedora 17 alpha. With the arrival of the final Fedora 17 release I ran through the articles again last night to make sure everything was OK. You can see the finished versions here:
As always, installing Oracle on Fedora 17 is just for fun and totally not supported. For anything proper you should be using Oracle Linux or RHEL.
In part 1 we performed a series of experiments to explore the relation between CPU utilization and Linux load average. We concluded that the load average is influenced by processes running on or waiting for the CPU. Based on experiments in part 2 we came to the conclusion that processes that are performing disk I/O […]
So, you’ve just gotten a fresh installed Linux system with Oracle Linux or Redhat Linux from the sysadmin. And with Oracle Linux you can not use the internet (forbidden by company laws is a common one), or you got Redhat Linux and can not use up2date for some reason. Most of the time, when installing Oracle products I am allowed to use the root account myself during the install. The DVD most of the time is still present in the drive.
You could mount the DVD and use ‘rpm’ directly to install packages off the DVD. If you get an error the rpm package has a dependency, you resolve the dependency, if that depended package has a dependency itself, you resolve that, etc. That’s something you could do. But there is an easier way!
Thanks to the kind introduction from Kevin Closson I was given the opportunity to benchmark the Virident PCIe flash cards. I have written a little review of the testing conducted, mainly using SLOB. To my great surprise Virident gave me access to a Westmere-EP system running a top of the line 2s12c24t system with lots of memory.
In summary the testing shows that the “flash revolution” is happening, and that there are lots of vendors out there building solutions for HPC and Oracle database workloads alike. Have a look at the attached PDF for the full story if you are interested. When looking at the numbers please bear in mind it was a two socket system! I’m confident the server could not max out the cards.
When my TV broke a few months ago I made the decision not to replace it. That means I only get to watch DVDs on the computer or stuff streamed on the web (BBC iPlayer, ITV Player or 4OD) using my iPad. I’m pretty happy with the situation as it prevents me wasting too much time in front of the TV. My only issue was being tied to the computer for DVDs. Yesterday I entered the 21st century and started streaming DVDs to my iPad.
A little Googling revealed HandBrake is about as simple as it gets, where DVD video transcoders on Linux are concerned. With that installed I saved a copy of a DVD (Alien) into the “movies” folder on my NAS, which is pre-configured for streaming videos. That’s nice and simple.
Just a quick note about the Call for Papers for the upcoming UKOUG 2012 annual conference to be held on 3rd to 5th December in Birmingham. I have been a speaker for the last 5 years and I think this is a very valuable conference about Oracle technology in Europe. If you want to be […]
I’ve been using the beta versions of UltraEdit 3.1 for Mac and Linux for a while, but I only noticed today the production version has been released. I normally get email updates, so I figure this one must have got directed to spam by accident.
Anyway, I’m now rockin’ the latest version on both platforms. Happy days…
This is as much a note to myself how to do this in the future as it is something hopefully worth reading for you. The requirement has been precise as always: migrate a database from 10.2 on SPARC to 11.2 on Linux. In the process, go from Veritas to ASM and make it quick!
I like short briefings but this was too short. Since the database was reasonably large I opted for the transportable tablespace approach, however I now think that a massively parallel impdp with network_link could have saved me quite a bit of time.
The following is by no means the complete story, but hopefully gives you an idea how to do these things. Always check, and document, then test (rinse and repeat). Only when proper signoff is received should you try such a process in production. Remember to script it and have at least one clean run of the scripts! This process is not super-quick, if you have low downtime requirements then consider Streams or better: Golden Gate for the process.