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Hans-Jürgen Schönig

Founder & CEO of CYBERTEC
Hans-Jürgen Schönig has worked with PostgreSQL since the 90's. He is the CEO and technical lead of CYBERTEC PostgreSQL International, a market leader in the field. He's served countless customers around the globe since the year 2000. He is also the author of the well-received "Mastering PostgreSQL" book series, as well as several other books about PostgreSQL replication and administration.

Articles by Hans-Jürgen Schönig

3 ways to detect slow queries in PostgreSQL

by Hans-Jürgen Schönig | 08.2018
How to fix bad performance in PostgreSQL - shows three useful and quick methods to spot performance problems and slow queries.

A beginners guide to PostgreSQL's UPDATE and autovacuum

by Hans-Jürgen Schönig | 07.2018
This article is a beginners guide about how PostgreSQL handles UPDATEs, about VACUUM as well as autovacuum and it's limitations.

Monitoring cluster performance in PostgreSQL

by Hans-Jürgen Schönig | 06.2018
How to monitor PostgreSQL database cluster performance with pg_stat_statements. Inspect an entire database cluster or a set of servers.

PostgreSQL: Detecting periods of activity in a timeseries

by Hans-Jürgen Schönig | 05.2018
PostgreSQL is a nice tool to handle activity in a timeseries. One of the more challenging tasks is to detect periods of constant activity.

CREATE VIEW vs ALTER TABLE in PostgreSQL

by Hans-Jürgen Schönig | 05.2018
A view is a virtual table based on a SQL statement. What happens if the data structure of the underlying PostgreSQL table changes?

Mapping Oracle datatypes to PostgreSQL

by Hans-Jürgen Schönig | 05.2018
How to map Oracle datatypes to PostgreSQL in the best way - this post helps you by making your migration to PostgreSQL as simple as possible.

PostgreSQL: Sharing data across function calls

by Hans-Jürgen Schönig | 05.2018
Recently I did some PostgreSQL consulting in the Berlin area (Germany) when I stumbled over an interesting request: How can […]

Tech preview: PostgreSQL 11 - CREATE PROCEDURE

by Hans-Jürgen Schönig | 04.2018
With PostgreSQL 11 the new feature CREATE PROCEDURE has been initiated. This Blogpost is about how to use this PostgreSQL feature.

ora_migrator: migration from Oracle to PostgreSQL

by Hans-Jürgen Schönig | 04.2018
ora_migrator is a migration tool, which makes migration as simple as possible: It only takes a single SQL statement to migrate a database.

idle_in_transaction_session_timeout: Terminating idle transactions in PostgreSQL

by Hans-Jürgen Schönig | 04.2018
Long PostgreSQL transactions can cause table bloat. idle_in_transaction_session_timeout limits the duration of a transaction to prevent bloat
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