All articles

Exoscale scaling up and down

In my previous Blog I had wrote about Swiss Cloud Provider: Exoscale. Read the Blog Today we will look little bit deeper in three subjects: Template & Template sharing Scaling up and down instances dbi(…)

Optimizer Statistics Gathering – pending and history

By Franck Pachot . This was initially posted to CERN Database blog on Wednesday, 12 September 2018 where it seems to be lost. Here is a copy thanks to web.archive.org Demo table I create a(…)

Building a network bonding between 2 cards on Oracle Linux

I recently needed to configure bonding between 2 network cards on a customer side and I wanted trough this blog to share my findings and how I built it showing some traces. I will also do a short comparison of(…)

Password rolling change before Oracle 21c

By Franck Pachot . You may have read about Gradual Password Rollover usage from Mouhamadou Diaw and about some internals from Rodrigo Jorge. But it works only on 21c which is(…)

Cluster level encryption for PostgreSQL 14

The discussions how and why TDE (Transparent data encryption) should be implemented in PostgreSQL goes back several years. You can have a look at these two more recent threads to get an idea on how much discussion happened around that(…)

Running two Patroni on one host using an existing etcd

Have you ever asked yourself, how to create a second Patroni PostgreSQL cluster on an existing server using the existing etcd? My first idea was to study the documentation of Patroni, but unfortunately without big(…)

SQL Server TCP: Having both Dynamic Ports and Static Port configured

Introduction Have you ever seen an SQL Server instance configured to listen on both “TCP Dynamic Ports” and “TCP (static) Port”? This kind of configuration can be caused by the following scenario: A named instance is installed. By default, it(…)

DynamoDB Scan: the most efficient operation 😉

By Franck Pachot . The title is provocative on purpose because you can read in many places that you should avoid scans, and that Scan operations are less efficient than other operations in DynamoDB. I(…)

Oracle SPD status on two learning paths

By Franck Pachot . I have written a lot about SQL Plan Directives that appeared in 12c. They were used by default and, because of some side effects at the time of 12cR1 with legacy(…)

NTP is not working for ODA new deployment (reimage) in version 19.8?

Having recently reimaged and patched several ODA in version 19.8 and 19.9, I could see an issue with NTP. During my troubleshooting I could determine the root cause and find appropriate solution. Through this blog I would like to share(…)