Neues vom PostgreSQL Planet

The pgBackRest team is pleased to announce the introduction of multiple repository support in v2.33. Backups already provide redundancy by creating an offline copy of your PostgreSQL cluster that can be used in disaster recovery. Multiple repositories allow you to have copies of your backups and WAL archives in separate locations to increase your redundancy and provide even more protection for your data.

I have previously blogged about scaling of read-only and read/write workloads. Inspired by this email thread, I want to be more specific about exactly what scaling you can expect by using read-only replicas. First, as the email poster pointed out, read replicas still have to replay write transactions from the primary server.

A hierarchical query is built upon parent-child relationship, the relationship exist in the same table or view. The relationship dictates that each child can have one parent while a parent can have many children. Hierarchical query is a SQL query that handles data of hierarchical model i.e. an organisation structure where every employee has one manager and one manager who is also an employee can have many employees in his reporting, another example is a family tree where one person can only have one parent while a person can have many children.

Visualizing spatial data is an important task. In this mini-tutorial, you will learn how to quickly visualize OpenStreetMap (OSM) data with PostGIS and QGIS. The idea is to get you started as fast as possible, and to make the most out of your data.

QGIS is freely available as Open Source software and can be used free of charge. It is a powerful tool to edit and visualize spatial data which is ideally stored in a PostGIS-enabled PostgreSQL database.

In the 1990's, most server operating systems were closed-source and produced by a few billion-dollar companies. In recent years, Red Hat Enterprise Linux (RHEL) became the default enterprise server operating system, with CENTOS filling the need for installations on smaller platforms and in the cloud.

Join us virtually on April 13, 2021 at 12:00PM,

Muffy Barkocy presents, “Tidying Up Your Data”.

Crunchy Data is pleased to announce its most recent release of pgBackRest: 2.33 with a number of new features including multiple repository support and GCS support.

PostgreSQL provides a highly sophisticated and powerful security and permission system. It allows you to define users (= roles), groups and so on. However, without a graphical user interface, it is usually a bit tricky to figure out which role is assigned to whom. The following blogpost explains how this can be done. Learn how to retrieve information on roles and role membership in PostgreSQL.

To show how users can be analyzed, we first create a couple of users and roles:

Databases are often a critical part of enterprise infrastructure, so when and how to upgrade them is a common discussion topic among database administrators, and Postgres is no exception. The Postgres community has a web page about when to upgrade, and the Postgres documentation has a section about upgrading.