Database Administration & Monitoring

My personal journey with Linux on the desktop

My Linux experience started back in 1999 when we needed a router for our ISDN connection in our shared apartment when we were students. I don't remember the hardware we used for that but I am sure at(…)

What you can do when your Veritas cluster shows interfaces as down

Recently we had the situation that the Veritas cluster (InfoScale 7.3) showed interfaces as down on the two RedHat 7.3 nodes. This e.g. can happen when you change hardware. Although all service groups were up and running this is a(…)

CPUs: Cores versus Threads on an Oracle Server

When doing a performance review I often do talk with the DBA about the CPU utilization of the server. How reliable is the server CPU utilization with tools like top or the host CPU utilization in the AWR-report? E.g. on(…)

Duplex RMAN backups between disk and tape

Below a workaround is shown how to “duplex” archivelog backups between disk and tape: Backup on disk (normal way): backup device type disk archivelog all;   Immediately  backup on tape: backup device type sbt archivelog until time 'sysdate' not backed(…)

SQL Server Management Studio 17.4: Vulnerability Assessment

SQL Server Management Studio is a well know integrated environment used to manage SQL Server infrastructure. This new version 17.4 can support SQL Server from 2008 up to 2017. It enhances existing features like Showplan, XE Profiler (complete list(…)

Backup and Restore PostgreSQL with PgBackRest II

By Mouhamadou Diaw In a precedent blog I shown a basic utilization of PgBackRest which is a tool to backup and restore PostgreSQL databases. In this blog I am going to talk some useful(…)

Backup and Restore PostgreSQL with PgBackRest I

By Mouhamadou Diaw Many tools can be used to backup PostgreSQL databases. In this blog I will talk about PgBackRest which is a simple tool that can be used to backup and restore a PostgreSQL database. Full,(…)

SQL Server on Docker and network bridge considerations

Let’s continue with this blog post series about SQL Server and Docker. A couple of days ago, I was in a customer shop that already implemented SQL Server 2017 on Linux as Docker containers. It was definitely a very interesting(…)

Can you trust option_packs_usage_statistics.sql ?

Introduction As a former Oracle LMS qualified auditor my opinion is sometimes requested before/during/after an Oracle LMS audit or simply to ensure a customer that his Oracle database is 100% in conformity with Oracle Licensing Policy. Even if(…)

How we build our customized PostgreSQL Docker image

Docker becomes more and more popular these days and a lot of companies start to really use it. At one project we decided to build our own customized Docker image instead of using the official PostgreSQL one.