Archive for January, 2016

Featured by Oracle Magazine

The Oracle Magazine featured me in its January / February 2016 issue. I really feel honoured and would like to say thank you for the opportunity!

Martin Klier Oracle Magazine Jan Feb 2016

For details, please see the Performing Databases Blog post about the publication.



DOAG noon2noon RAC & Dataguard – Quick Report

There’s always something to learn – for example about Oracle RAC (Real Application Clusters) and Dataguard. And the old-school frontal teaching concept is boring, and more important, ineffective after a few hours of passive listening. So the German Oracle Users Group DOAG organized a “noon2noon” event: “Oracle RAC and Dataguard” this week in Würzburg (January 2 1st-22nd 2016). It was the second noon2noon, after introducing the concept last year with Oracle vs. MySQL. I enjoyed it much last time, so I easily agreed to volunteer as a RAC Attack “Ninja” and tech guy on site for the workshops in general this year.

The response was close to overwhelming – we calculated 25 participants, but ended up with 39, and a PACKED room. Somebody called it a chicken cage, but the atmosphere was great. Thanks to the air condition. :)

DOAG noon2noon RACattack

Everybody is highly motivated, despite the packed room at noon2noon :)

But what’s that noon2noon thing?

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How to disable Oracle ACFS drivers / registry resource

Sometimes an installed ACFS can cause trouble, especially if we don’t or can’t use it (e.g. when not using an UEK Linux kernel, like with SuSE Linux Enterprise Server SLES). There’s lots of documentation how to create and maintain ACFS file systems, but how to get rid of ACFS at all wasn’t so easy to guess. I had to find out how to disable Oracle ACFS drivers, because the grid infrastructure did not stop successfully when using “crsctl stop crs” or “/etc/init.d/ohasd stop”:
CRS-2799: Failed to shut down resource ‘ora.drivers.acfs’ – and thus, it was not possible to upgrade the grid infrastructure 11.2.0.3 to version 12.1.0.2 (rootupgrade.sh fails on first node, also when trying to stop the CRS for the same reason).

How to disable Oracle ACFS drivers - runInstaller during upgrade

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