About

Martin Klier

usn-it.de

DOAG Conference 2011 – Impressions and Look-at’s

Once again this year, the German Oracle Users Group has its annual conference and exhibition in Nuremberg. (DOAG Konferenz und Ausstellung 2011, Nürnberg). Being there is nearly a must for Oracle guys in German speaking countries. As usual, here comes my unordered, incomplete and ad-hoc list of things I wrote down to have a closer […]

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Oracle Clusterware 11.2: ASM crashes at startup

These days, a customer’s Oracle Clusterware (2 nodes) crashed one ASM instance at every startup. More Facts: It was not possible to start it manually, too. The CSSD was running. For obvious reasons, CRSD did not start. The other ASM instance in the cluster recognized CLUSTER RECONFIGURATION for a short period of time. The ASM […]

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Linux Network bonding – setup guide

After looking up Linux bonding stuff for the thrid time, I planned to write an article aubout it. But there are lots of good blog posts on this, so just click here at unixfoo: Linux Network bonding – setup guide (strange link, I know, but it works) Hope it helps for you next high avaliability […]

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Native ZFS for Linux

After long-aking FUSE implemented ZFS on Linux, Lawrence Livermore Labs have released a reimplemented ZFS for native use with a Linux Kernel. See details here: http://github.com/behlendorf/zfs Still have to test it, but I’d daresay, it was time. Good pooling Martin […]

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Oracle 11gR2 ASM / ACFS: A first benchmark (poorly)

Hi folks, since Oracle 11g Release 2 is out now, I had to test one of the most-missed ASM features: the ASM cluster file system ACFS. My Setup: Two VMware nodes with 2 CPUs and 1,5GB of RAM each Oracle Enterprise Linux 5.3 x86_64 Four virtual cluster disks from the ESX server, 10GB in size […]

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Setting ulimit -m in AIX

AIX has its own rules, as I have to discover these days. Coming across ulimit, I found out that smitty configures value A here and value B completely elsewhere. Hardest one so far has been “ulimit -m” (“Specifies the size of physical memory, in number of K bytes.” a user can assign), since I could […]

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Single Sign On for Apache 2.2 and Active Directory 2003 R2 with SuSE 10.2, mod_auth_kerb and MIT Kerberos

Hi, this is a small howto out of my needs, suggestions are always welcome! Assumptions for this paper You know and basically follow http://www.grolmsnet.de/kerbtut, but there are some facts missing/wrong. 2003R2 KDC’s are 10.0.0.1 and 10.0.0.2 (DNS: dc1.example.com and dc2.example.com) Kerberos Realm for ADS is ADS.EXAMPLE.COM (upper case required!) Web server (hostname.domain) is webhostname.server.example.com DNS […]

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Switch workspace on command line

Sometimes, it’s nice to change the current windowmanager workspace on command line, for example if you desire to start a application exactly HERE or THERE. For KDE you may want to do it with “kstart”. But a tool like kstart might not be available for your windowmanager, so have a look at “wmctrl” as well: […]

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