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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(…)

AWS Automation – Stop a RDS instance

Introduction I created a RDS SQL Server instance on AWS. I use it for test purpose and to minimize the costs I needed to ensure that my instance is stopped automatically at the end of the working day and also(…)

DynamoDB: adding a Local covering index to reduce the cost

By Franck Pachot . This is a continuation on the previous post on DynamoDB: adding a Global Covering Index to reduce the cost. I have a DynamoDB partitioned on “MyKeyPart”,”MyKeySort” and I have many queries(…)

DynamoDB: adding a Global covering index to reduce the cost

By Franck Pachot . People often think of indexes as a way to optimize row filtering (“get item” faster and cheaper). But indexes are also about columns (“attribute projection”) like some kind of vertical partitioning. In relational (“SQL”) databases(…)

Documentum – A first experience with the Life Sciences Suite 16.6.1 silent installation

A few months ago, I was working on automating an LSS installation for a customer so I thought about sharing my experience around that topic… LSS is the Life Sciences product from OpenText (formerly EMC->Dell->OpenText). It can be split into(…)

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(…)

Upgrading SUSE Linux Enterprise online

One really good feature from SUSE Linux Enterprise (SLE) is that it allows you to upgrade from your running system to a new service pack online. Let's say from SLE 12 SP3 to SLE 12 SP4. No new installation is(…)

ysql_bench: the YugaByteDB version of pgbench

By Franck Pachot . This follows the previous post on testing YugaByteDB 2.1 performance with pgbench: https://www.dbi-services.com/blog/yugabytedb-2-1/ A distributed database needs to reduce inter-node synchronization latency and then replaces two-phase pessimistic locking by(…)

YugaByteDB 2.1: the Open Source multi-region distributed database with PostgreSQL API is in GA with huge performance improvement

By Franck Pachot . 9 months ago I was looking at YugaByteDB which was still in beta version for its 'YSQL' API. I published my first test on Medium: https://medium.com/@FranckPachot/running-pgbench-on-yugabytedb-1-3-3a15450dfa42. I have been very enthusiastic about(…)

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(…)