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DctmAPI.py revisited

2 years ago, I proposed a ctypes-based Documentum extension for python, DctmAPI.py. While it did the job, it was quite basic. For example, its select2dict() function, as inferred from its name, returned the documents from a dql query into(…)

Migrate Oracle Database 9.2.0.6 to Oracle 19c using GoldenGate

When a customer wanted to take the challenge to migrate an oracle database 9.2.0.6 (the prehistory in the Oracle world) to Oracle 19c using Oracle GodenGate, I saw more problems than add value for different reasons:  Oracle 9.2.0.6 database is(…)

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(…)