Daniel Westermann

PostgreSQL 13 – Autovacuum can now be triggered based on inserts

A common issue with insert only tables in PostgreSQL is, that autovacuum well never kick in as the formula for autovacuum considers obsoleted tuples since the last vacuum but not the number of inserted tuples. Because of this you usually(…)

Using AWS Storage Gateway as a backup target for PostgreSQL – Cached volume gateway

In the last post we had a look on how you can use AWS Storage Gateway as File gateway to store your PostgreSQL backups safely offsite on AWS(…)

Using AWS Storage Gateway as a backup target for PostgreSQL

In the last post we had a quick look at AWS Kinesis data streams and how you can push data to AWS S3 using(…)

Sending PostgreSQL data to AWS S3 by using AWS Kinesis data streams

Before we really start with this post: This is just an experiment and you should not implement it like this in real life. The goal of this post is just to show what is possible and I am not saying(…)

PostgreSQL message levels

When you start to write business logic in the database by using triggers or functions/procedures you usually want to report messages to the user that runs your code or you want to include some debugging output for your own. In(…)

Migrating an Oracle instance to AWS Aurora – 4 – AWS DMS Change Data Capture (CDC)

This is the last post in this little series about migrating on Oracle instance to AWS Aurora with PostgreSQL compatibility. For the previous one you can check here, here and(…)

Migrating an Oracle instance to AWS Aurora – 3 – Data replication with AWS DMS

If you followed the last two posts in this little series (here and here) this is the current status of this demo migration project: We have converted the Oracle SH schema and(…)

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(…)