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Foreign Keys in MySQL, SQL, NoSQL, NewSQL

By Franck Pachot . In the NoSQL times, it was common to hear thinks like “SQL is bad”, “joins are bad”, “foreign keys are bad”. Just because people didn’t know how to use them, or they were running on(…)

Oracle – testing resource manager plans?

By Franck Pachot . I never remember that in order to use instance caging you need to set a Resource Manager Plan but don’t need to set CPU_COUNT explicitly (was it the case in previous versions?). Here is how(…)

SQL Server – PolyBase Services when listening on all IP is disabled

Introduction You will find a lot of blogs explaining how to install the PolyBase feature with a SQL Server database instance. You will also learn how to configure it and how to use it in these blogs. But I could(…)

A VPC is a private cloud in a public cloud

By Franck Pachot . If you are surprised that the first thing you do in a Public Cloud is creating a Virtual Private Cloud, this post is for you. This is a beginner level post. And if you are(…)

How to migrate Oracle Reports to Oracle BI Publisher ?

According to the Oracle Lifetime Support Policy , Oracle is not planning any functional enhancements for Oracle Reports in its terminal release, or any subsequent releases. Oracle Fusion Middleware 12cR2 (12.2.1.3.0) will be Oracle Reports terminal release. Oracle Report(…)

Linux perf-top basics: understand the %

By Franck Pachot . Linux kernel has a powerful instrumentation that can be accessed easily. When you want to drill down into your program functions to understand their CPU usage, “perf” is the easiest. It can attach to the(…)

Getting started with the Zalando Operator for PostgreSQL

In the previous posts (Rancher, up and running, on EC2 – 1 – One node, Rancher, up and running, on EC2 – 2 – Three nodes, Rancher, up and running, on(…)

ODA: Move a DB to ASM after migrating from 11g to 19c

Introduction Modern Oracle Database Appliances still support 11gR2, but there are several drawbacks using this old version: if you want/need support for your databases, you should pay for Market Driven Support (11gR2 is even no more under extended support –(…)

Deploying a Kubernetes cluster on EC2 with Rancher

Once Rancher is up and running, it makes the deployment and management of Kubernetes clusters quite easy. In this post we'll deploy a brand new cluster on top of EC2. If you want to have a simple(…)

AWS: PostgreSQL on Graviton2 with newer GCC

By Franck Pachot . In the previous post I have run PostgreSQL on AWS m6gd.2xlarge (ARM Graviton2 processor). I didn’t precise the compilation option and this post will give more details following this feedback:(…)