Tuesday 23 June 2015

Vagrant vs. VirtualBox ? - A false contradiction

"Why should I use Vagrant instead of just VirtualBox?" - There are quite a lot of questions and answers of that type  in the net. The questioners seem to belong to the group of operations engineers, e.g. application supporters, database administrators, etc. The answerers seem to belong to the group of developers. Hence my first clue on this queer debate is, that it may be a question of conflicting priorities in the field of the Devops movement.

Friday 19 June 2015

Unix for the DBA: Handling Shared Memory

The Problem

There are some good introductions, but special questions are usually missing, like for instance  handling the Shared Memory and the kernel parameters. A professional DBA cannot rely on system administrators, but should rather advise them in setting up Unix - Systems for Oracle databases. A crucial question is the portion of Shared Memory and how to increase it.