All articles

MongoDB Monitoring using Nagios

The question comes frequently: How can I monitor my MongoDB cluster (ReplicaSet or Sharded) in a production environment? To answer this question we need first to get an overview of all potential monitoring solutions, and then compare them one by(…)

Deploy a Kubernetes cluster using Ansible in AWS

After more than 2 years of experience in Kubernetes cluster administration, I am deeply convinced that one of the most important things to have as an ops guy is a sandbox cluster at your disposal. This can be either a(…)

Temporal tables for PostgreSQL 15?

One of the features which is currently missing in PostgreSQL is Temporal Tables. Other database systems have that since a long time and many people want to have in PostgreSQL as well. If you don't know what it is,(…)

Parallel distinct for PostgreSQL 15

When parallel execution was introduced with PostgreSQL 9.6 it was quite limited and supported only a few operations to run in parallel. Over time more and more operations were enabled to run in parallel. When PostgreSQL 15(…)

What are those *_init files for in PostgreSQL?

Quite some time ago I've written about relation files in PostgreSQL and when they get created. In that post we talked about the files containing the actual data, the free space map (fsm) and the visibility map(…)

How to find the TLS used for the SQL Server connection

For a customer, I do some research to find which TLS is used on the SQL Server environment. The only way is to create an Extended Event. A big limitation is that the event used is only available on SQL(…)

How to view and change SQL Server Agent properties with T-SQL queries

Few days ago, after a reboot, we had this warning on the Agent Error Logs on many servers: Warning [396] An idle CPU condition has not been defined – OnIdle job schedules will have no effect(…)

Auto Upgrade of non CDB to PDB with autoupgrade.jar in Oracle 21c

Since Oracle 21c it is possible to convert the non CDB database into a PDB directly during the upgrade using the Oracle Autoupgrade Tool. This is an important enhancement, because with Oracle 21c the non CDB architecture is desupported,(…)

Nutanix Era with oracle databases : Part 3 – Provision an oracle database

In the previous blog (Part 2) we have created a VM template for oracle database and we could successfully registered it in Nutanix Era. Now we are going to use it to provision an oracle database named ORATEST on a(…)

Nutanix Era with oracle databases : Part 2 – Create an oracle database template VM

This is the part 2 of Nutanix Era blogs related to the use with Oracle databases. Before using Nutanix Era with Oracle and be able to provision oracle databases, we need to create a template VM. To do so, we(…)