Daniel Westermann

Migrating an Oracle instance to AWS Aurora – 2– The AWS Schema Conversion Tool (SCT)

Having the required infrastructure ready now it is time to have a look at the AWS Schema Conversion Tool (SCT). The goal of this tool is to convert a source schema (Oracle(…)

Can I put my temporary tablespaces on a RAM disk with PostgreSQL?

The short answer to the title of this blog post is: yes, of course you can. The more important question is: should you? The PostgreSQL documentation about tablespaces contains an explicit warning: "Placing a tablespace on(…)

Migrating an Oracle instance to AWS Aurora – 1 – Setting up the base infrastructure

Migrating database to the cloud is a hot topic since a few years. As more and more of our customers are in the cloud, and some of them in AWS, migrating some of their Oracle databases(…)

About temp_tablespaces in PostgreSQL

There often is a discussion if tablespaces should be used in PostgreSQL. People used to work with Oracle are often a bit surprised by this discussion as there is no way around using tablespaces in that technology. PostgreSQL does not(…)

Collations in PostgreSQL – basics

When you work with databases sooner or later you will need to get in touch witch collations. It might be that you never needed to think about it as initdb picked a(…)

Adding PostgreSQL extensions without being super user?

Usually, when you need to install a PostgreSQL extension you do this as superuser (or at least I am doing it like this). The downside of that is, of course, that a super user must be available once a new(…)

PostgreSQL 13: parallel vacuum for indexes

Because of its implementation of MVCC PostgreSQL needs a way to cleanup old/dead rows and this is the responsibility of vacuum. Up to PostgreSQL 12 this is done table per table and(…)

Deploying your own PostgreSQL image on Nutanix Era – 2 – Deploying a new PostgreSQL VM

In the last post I described how you can create your own PostgreSQL image in Nutanix Era. In Nutanix wording this is a "Software profile". This profile can now be used to deploy PostgreSQL VMs with(…)

Deploying your own PostgreSQL image on Nutanix Era

Some days ago we had a very good training on Nutanix. Nutanix is a Hyper-converged infrastructure and that means that all is software driven and the system can be deployed on many(…)

Real time replication from Oracle to PostgreSQL using Data Replicator from DBPLUS

I've done quite some real time logical replication projects in the past, either using Oracle Golden Gate or EDB replication server. Build in logical replication in PostgreSQL (which(…)