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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

pg_timetable: Advanced PostgreSQL scheduling

by Hans-Jürgen Schönig | 01.2020
How to get the best PostgreSQL job scheduling: pg_timetable provides better job execution in than other schedulers. Read the details.

PostgreSQL: You might need to increase max_locks_per_transaction

by Hans-Jürgen Schönig | 01.2020
How can you prevent the error "out of shared memory" in PostgreSQL? max_locks_per_transaction is the critical configuration parameter.

Setting PostgreSQL configuration parameters

by Hans-Jürgen Schönig | 12.2019
PostgreSQL configuration offers more than meets the eye at first glance, so let us dive into PostgreSQL configuration parameters.

Abusing PostgreSQL as an SQL beautifier

by Hans-Jürgen Schönig | 12.2019
Even though SQL is pretty easy to read, developers often use SQL beautifier. Is it possible to format queries nicely only using PostgreSQL onboard tools?

effective_cache_size: What it means in PostgreSQL

by Hans-Jürgen Schönig | 11.2019
effective_cache_size is usefull for database tuning as well als for speeding up PostgreSQL. Learn more about of this secretive setting.

Prewarming PostgreSQL I/O caches

by Hans-Jürgen Schönig | 10.2019
How to deal with PostgreSQL restarts? pg_prewarm allows you to automatically prewarm your caches after a database failure or a simple restart

What is autovacuum doing to my temporary tables?

by Hans-Jürgen Schönig | 10.2019
The main issue is that autovacuum does not touch temporary tables. Yes, it’s true – you have to VACUUM temporary tables on your own. Read more

How PostgreSQL estimates parallel queries

by Hans-Jürgen Schönig | 10.2019
How to understand parallel queries - estimate the cost of sequential scans and parallel sequential scans in PostgreSQL

Fixing track_activity_query_size in postgresql.conf

by Hans-Jürgen Schönig | 10.2019
How to use track_activity_query_size, a configuration parameter that determines when a query will be cut off. Use it to your advantage.

Using “Row Level Security” to make large companies more secure

by Hans-Jürgen Schönig | 09.2019
How to use row level security to restrict internal access to PostgreSQL databases. How to configure access restrictions dynamically.
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