Welcome to my site

My name is Stefan Oehrli. I’m a Swiss electrical engineer working since several years as an Oracle DBA. My main interests are backup & recovery, database internals, database security, infrastructure management and other stuff coming across my daily work as a DBA and Solution Manager at Trivadis. For a while now, Oracle Unified Directory has been one of them. On this website I share my experience and some of my thoughts in these areas with you. Among other things, you find my blog, a few scripts, links to some papers and presentations I have written or co-authored, list of public appearances as well links to other interesting web resources.


Recent Posts

A list of the 5 most recent posts. To see a full list go to the Blogs.

  • 14 June 2018 : Oracle 18c new Security Features
    Today I had the opportunity to give a presentation on Oracle 18c new Security Features at the SOUG day in Baden. It was a great opportunity to discuss the security enhancements in the latest Oracle database release. This release introduces some new security features that simplify the secure operation of on-premises or cloud-based databases. Especially the new central managed user [Read more...]

  • 16 May 2018 : Oracle Unified Directory systemd unit file
    About a year ago I explained in the blog post Start OUD Servers on Boot using systemd how to start Oracle Unified Directory automatically on system startup. In the meantime a lot has changed, so has my unit file. The simple unit file actually worked quite well. Until the time came when I installed an updated Java version for OUD. [Read more...]

  • 2 May 2018 : Reduce PDF size in Mac OS Preview
    Once and a while I have to create PDF's out of my PowerPoint presentations. The same a couple of weeks ago when I finished my presentation on Oracle Transparent Sensitive Data Protection at the SOUG day in Baden-Dättwill. I prefer to do this with a minimal amount of extra tools. So no AcrobatReader, GostScript etc. The built-in functionality for printing [Read more...]

  • 18 April 2018 : Oracle CPU / PSU April 2018
    Oracle recently released the spring Critical Patch Advisory. It is the first critical patch update, which also includes fixes for Oracle 18c. Over all it includes 254 new security fixes across the product families. Overall a rather large update, although only a security vulnerability is patched for the Oracle databases. This vulnerability is not remotely exploitable without authentication and is [Read more...]

  • 28 March 2018 : Smaller Oracle Docker images
    One of the important challenges with Docker is to get used to the image layers and the layered file system. It quickly happens that you unintentionally have too much data in an intermediate layer. Either log files, installation software or login credentials. Whereby the first two "only" blow up the Docker image unnecessarily, while the last point can be a [Read more...]

Want to see more blog posts? Just go to blogs or browse the archives.