Infrastructure at your Service

All posts by Daniel Westermann

Daniel Westermann
Senior Consultant and Technology Leader Open Infrastructure

Daniel Westermann has more than 10 years of experience in management, engineering and optimization of databases and infrastructures. He is specialized in Oracle Technologies as Performance Optimization and Tuning, Standardization, Backup & Recovery, in High Avaibility solutions as Oracle Real Application Clusters (RAC), Oracle Data Guard, Oracle Grid Infrastructure, as well as in storage technologies as Oracle Automatic Storage Management (ASM). Daniel Westermann is Oracle Certified Professional 10g/11g/12c. He is also a PostgreSQL Plus 9.0 Professional and a Postgres Advanced Server 9.4 Professional. Prior to dbi services, Daniel Westermann was Management System Engineer at LC SYSTEMS-Engineering AG in Basel. Before that, he worked as Oracle Developper & Project Manager at Delta Energy Solutions AG in Basel (today Powel AG). Daniel Westermann holds a diploma in Business Informatics (DHBW, Germany). His branch-related experience mainly covers the pharma industry, the financial sector, energy, lottery, telecommunications.
Daniel Westermann

PostgreSQL 11: Instant add column with a non null default value

By | Database Administration & Monitoring | No Comments

As I am currently preparing my session for the Swiss PGDay which is about some of the new features for PostgreSQL 11, I though this one is worth a blog post as well. Up to PostgreSQL 10 when you add a column to table which has a non null default value the whole table needed to be rewritten. With PostgreSQL 11 this is not anymore the case and adding a column in such a way…

 
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Daniel Westermann

EDB Failover Manager in EDB containers in Minishift/OpenShift – Failovers

By | Database Administration & Monitoring | No Comments

In the last post we had a look at the basic configuration of EDB EFM and confirmed that we can do manual switchovers for maintenance operations. Being able to do a switchover and switchback is fine but what really is important are automatic failovers. Without an automatic failover this setup would be somehow useless as a) EDB EFM is supposed to do exactly that and b) without that we would need to implement something on…

 
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Daniel Westermann

Scaling the EDB containers in MiniShift/OpenShift

By | Database Administration & Monitoring | No Comments

When you followed the last post you should have two pgpool instances and one EDB Postgres instance running in OpenShift. pgpool is responsible for the load balancing, meaning: Send write requests to the master instance and spread read requests over all instances. In the current setup this does not make much sense as we only have one instance so in this post we will scale the setup to finally consist of one master and one…

 
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Daniel Westermann

Setting up MiniShift

By | Database Administration & Monitoring | No Comments

Currently we have many requests to support customers in running PostgreSQL in Docker containers. Some of those use redhat OpenShift as the management platform for their Docker deployments. Setting up an OpenShift cluster requires quite some resources and is nothing you want to do on your workstation usually. To overcome that you can use MiniShift which launches a one node OpenShift cluster which you can use for testing. Setting that up is quite easy.  

 
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Daniel Westermann

Can I do it with PostgreSQL? – 19 – Create user … identified by values

By | Database Administration & Monitoring | No Comments

Puh, that last post in this series is already half a year old. Time is moving too fast Today, while being at a customer again, this question came up: Can I do something comparable in PostgreSQL to what I can do in Oracle, which is: Create a user and provide the hashed password so that the password is the same on the source and the target (which implies not knowing the password at all)? In…

 
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