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Laurenz Albe

Senior Consultant & Support Engineer
Laurenz Albe is a senior consultant and support engineer at CYBERTEC. He has been working with and contributing to PostgreSQL since 2006, has written patches for core, and wrote oracle_fdw. He holds a Master's degree in Mathematics from the University of Vienna and a Master's in Computer Science from the Technical University of Vienna. In his spare time he enjoys reading to his children and pondering the roots of language.
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Articles by Laurenz Albe

Making the PostgreSQL visibility map visible

by Laurenz Albe | 06.2024
Enough has been written about the connection between VACUUM, the visibility map and index-only scans in PostgreSQL. But recently I demonstrated index-only scans […]

Why do I have a slow COMMIT in PostgreSQL?

by Laurenz Albe | 05.2024
  Sometimes one of our customers looks at the most time consuming statements in a database (either with pg_stat_statements or […]

cursor_tuple_fraction and the PostgreSQL JDBC driver

by Laurenz Albe | 05.2024
This article is a kind of failure story. I originally set out to write a piece about the PostgreSQL parameter […]

Syslog logging with journald in PostgreSQL

by Laurenz Albe | 04.2024
Logging to syslog is not a new PostgreSQL feature at all. Still, I find few people using it, so perhaps […]

PostgreSQL parallel query problems in JDBC and DBeaver

by Laurenz Albe | 01.2024
  I recently investigated a surprising behavior of the DBeaver database client in connection with PostgreSQL parallel query, which I'd […]

Broken foreign keys: how can that happen in PostgreSQL?

by Laurenz Albe | 12.2023
  One of the fundamental requirements for a relational database is that the transaction system always maintains consistency. That means […]

What you should know about PostgreSQL minor upgrades

by Laurenz Albe | 12.2023
© Laurenz Albe 2023 The PostgreSQL documentation is rather terse on the subject of minor upgrade. The reason is probably […]

PostgreSQL hash index performance

by Laurenz Albe | 12.2023
  Among the many index types in PostgreSQL, the hash index is the most widely ignored. This came home to […]

Conditional foreign keys and polymorphism in SQL: 4 Methods

by Laurenz Albe | 08.2023
  This article is about the notoriously difficult problem of “conditional foreign keys”. In object-oriented programming languages, polymorphism is a […]

Postgres v16: 14 Cool New Features

by Laurenz Albe | 08.2023
PostgreSQL v16 contains many new features and enhancements. Here are PG v16's 14 best new features: Everybody's favorite: You no longer […]
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