Troels' blog

I recently had a vulnerability scanner flag a server that had an OpenSSL library package which had a vulnerability.

Surprisingly often, I find myself needing to find the n most/least recently changed files.

An important term to know of in the software development industry is yak shaving.

In a poll in the Copenhagen Postgres User Group, I asked folks which software source they use when installing Postgres.

Situation: Need to peek into what the different threads of a Java process are doing.

I've spent hours trying to find out why I couldn't get Postgres LDAP auth to work against a Samba active directory server in one setup (it worked well against a Samba active directory in another...).

The IT profession needs to confront policies which demand antivirus be installed as a general measure IT professionals still have in fresh memory the failure of CrowStrike's Falcon endpoint protection product which caused an US$10 billion global IT breakd…

The following task comes up once in a while, but I keep forgetting how to do it.

I recently spent a frustrating amount of time troubleshooting a Java application which had stopped working properly after an upgrade: Certain features of the product were broken due to the application running on a Linux server which had been configured wi…

When installing Red Hat Enterprise Linux 9, you may choose to apply a security profile, such as ANSSI-BP-028 High.

NTP-based DDoS attacks are fashionable, currently.

Fibre channel (FC) storage is handy, and generally very reliable, in my experience.

In a classical three-tier architecture (database, application-server, client), a choice will always have to be made: Should the database and the application-server reside on separate servers, or co-located on a shared server?

It seems like the next generation of PostgreSQL will have a new, rather innovative feature: Exclusion constraints.

I finally got around to adjusting my SQL comparison page, so that the improvements in PostgreSQL 8.4 are taken into account.

I finally found some time to update my page which compares SQL implementations.

Not all of VLDB2009 was related to cloud storage.

One of the recurring themes at the VLDB2009 conference was how to create massively scalable database systems, by decreasing expressiveness, transaction coverage, data integrity guarantees—or any combination of these.

Monday, I attended the Transaction Processing Council (TPC) Workshop about the latest developments in database benchmarks.

I'm attending the 35th VLDB conference in Lyon: VLDB2009.

I'm on the road.

Background Some people dislike Storage Area Networks (SANs).

A reader of my SQL implementation comparison page suggested that I keep a change log for the page.

Adobe released generation 10 of its Flash player software today.

DB2 is usually a rather strict database system: It doesn't allow you to drop a procedure which is being used by a function.