If you haven't used an Oracle database for some time you might stumble upon the issue I just had: all internal user accounts were locked and I also didn't know the passwords. By default login information of internal users are invalid after 180 days. The following accounts are important to me on my Oracle 11gR2 Database …

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This week VMware introduced plenty of new, long-awaited product versions during an online event. I also joined this event to see the further development that was taking place since VMworld 2014. vSphere 6 The biggest highlight was vSphere 6 - in accordance with VMware this is the "biggest release ever". With …

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Recently I stumbled upon various PHP errors while using the free analytics software Piwik: 1PHP Fatal error: Allowed memory size of 2442473628 bytes exhausted (tried to allocate 64 bytes) 2... 3Fatal error: Maximum execution time of 30 seconds exceeded in .../piwik/core/DataTable.php The solution is quite simple - the …

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Doing a recent Wordpress theme installation I stumbled upon a problem which could have taken much time to fix it. The theme I installed offers multiple sidebar configurations (left, right, none). There is no default settings which means that it is necessary to set the sidebar configuration for every particular blog …

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After a recent update to CyanogenMod 12 (Android 5.x) I realized that the storage for apps is quite tight. The reason for this is that the recommended GAPPS (Google Apps) need a lot of space. Beyond some useful applications this package also includes much "crap" that is unnecessary. You might run out of space …

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This week one of the SUSE Linux Expert Day events that are taking place worldwide since september 2014 was hosted at 25hours Hotel Frankfurt by Levi's - a very stylish and fancy location! Agenda The event was planned for 5 hours and consisted of many interesting talks: Keynote - Michael Jores, Regional Director Central …

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This week Red Hat Satellite 5.7 was released. With the ninth update of the 5.x tree many improvements from the Spacewalk development were applied. New web interface The most eye-catching change is the web interface. While this hasn't changed a lot in the last 10 years the most recents developments from Spacewalk 2.1 to …

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Winter time is crafting time! I spent the last couple of days on the Raspberry Pi and PIR sensors (Passive Infrared). Using this sensors it is possible to recognize motions - in combination with GPIO APIs you can create useful applications. The first idea that came in my mind was to monitor my washing machine in the …

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If you own a Cisco SG-200/300 switch you are lucky to configure Port Security and MAC filtering. The advantage of this is that you are able to define which MAC addresses may establish connections on particular ports. Other devices will not be able to access the network - which is a good idea especially for public …

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CRUX-ARM is a Linux distro for ARM devices like the Raspberry Pi that follows the KISS philosophy. If you're looking for a minimalistic system you might want to have a look at the construction kit. I'm using CRUX-ARM on one of my Raspberry Pi's. The installation fits on a 1 GB memory card. On the project's wiki there …

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