PostgreSQL

Pgpool-II is a middleware solution designed to enhance the performance, scalability, and high availability of PostgreSQL databases. It provides connection pooling, load balancing, and replication capabilities, making it a valuable tool for managing PostgreSQL deployments. In this step-by-step guide, we will walk you through the detailed process of installing and configuring Pgpool-II on Ubuntu Linux. … Read more

PostgreSQL, a robust and flexible open-source relational database system, often requires load balancing to efficiently handle increased database traffic. One of the premier solutions for PostgreSQL load balancing is Pgpool-II, a renowned middleware tool that offers connection pooling, replication, and load balancing features. This article will provide an in-depth exploration of Pgpool-II and its various … Read more

In the data-centric era we live in, managing your PostgreSQL database efficiently and ensuring optimal performance can be a challenging task. This is where PostgreSQL load balancing comes into play, enabling a streamlined, effective distribution of your database load. What is PostgreSQL Database Load Balancing? PostgreSQL Database Load Balancing refers to the practice of distributing … Read more

Active/active replication in PostgreSQL enhances both high availability and load balancing. This advanced setup uses the Bi-Directional Replication (BDR) plugin to synchronize multiple database servers. Here’s how to set it up. Setting Up Active/Active Replication Step 1: Prepare the Servers Ensure you have at least two servers with PostgreSQL installed. Both servers must run the … Read more

When you’re working with PostgreSQL, one of the first things you’ll need to know is how to view the tables in your database. Tables are where your data lives, so understanding how to list them is pretty important. Whether you’re using the command line or a tool like pgAdmin, PostgreSQL gives you several ways to … Read more

Write Ahead Logging (WAL) is a pivotal component of PostgreSQL. The principle of WAL is straightforward yet profound: every action that modifies the database content is recorded into a log before it’s applied to the database. This action-first, record-later methodology improves the durability and consistency of the database by providing an audit trail, which becomes … Read more

Replication—the act of duplicating data across multiple database servers— is a cornerstone feature in PostgreSQL. It facilitates high availability, enhances read scalability, and provides a means for data distribution. PostgreSQL mainly supports two replication types: physical and logical replication. Let’s dive deeper into the world of PostgreSQL replication and unravel the difference between these replication … Read more

Imagine PostgreSQL performance logging as your database’s personal journal. It’s your go-to for capturing all the important stuff, especially when you switch it on. This gives you a clear picture of what’s happening in your database world, helping you spot those pesky slow queries that can drag down efficiency. Why care? Because finding and fixing … Read more

PostgreSQL is a rock-solid, open-source database system that’s a favorite among developers. If you’re working on Ubuntu, knowing how to start and manage the PostgreSQL server is a must for keeping your projects on track. This guide will walk you through everything you need to know, from starting the server to troubleshooting common issues. By … Read more

This article will explore focus on how to PostgreSQL reset statistics using the pg_stat_reset command. We will discuss what this command does, when and why to use it, and the impact it has on your PostgreSQL database. Efficiency is important, so check out this article on how to reload config using pg_ctl without restarting the … Read more

This file controls client authentication, and its modifications won’t take effect until you reload pg_hba.conf. In this comprehensive guide, we’ll answer the top ten questions about reloading the pg_hba.conf file. What is the command to reload the pg_hba.conf file in PostgreSQL? The command to reload pg_hba.conf file in PostgreSQL is fairly simple. Use the following … Read more

This article will show you how to use the pg_dump utility that is built-in to PostgreSQL to backup or dump the database to a file. This is a utility I use all the time to quickly make periodic backups of my databases. This tool has the ability to create both compressed and uncompressed dumps of … Read more

PostgreSQL is a powerful, open-source relational database system that’s widely used for its reliability and flexibility. If you’re setting up PostgreSQL on CentOS, you’re in the right place. This guide will walk you through the installation process, from adding the necessary repository to configuring the database for remote access. Step 1: Set Up the PostgreSQL … Read more

Reloading PostgreSQL settings without restarting keeps your database running smoothly. It ensures updates to files like postgresql.conf and pg_hba.conf apply right away without stopping queries or breaking connections. This guide explains three methods to reload settings, shares useful tips, and offers troubleshooting advice. Why Reload PostgreSQL Configurations? When you update files such as: changes don’t … Read more

Monitoring table and row locks in PostgreSQL helps keep your database running efficiently. Locks are essential for maintaining data integrity but can sometimes cause performance issues if they persist for too long. This guide provides a clear and easy way to check for active locks in your PostgreSQL database. Step 1: Access the PostgreSQL Command-Line … Read more

If you’re working with a PostgreSQL database, keeping tabs on active queries is a must to keep things running smoothly. Let it slide, and you could end up with sluggish performance—or even a database that stops working altogether. The upside? PostgreSQL has built-in features to help you stay on top of what’s happening. This guide … Read more

This article will show you how to determine when your database tables were last vacuumed, auto-vacuumed, analyzed, and auto-analyzed on a PostgresSQL database. Performing these operations are critical in keeping the database optimized and performant. What is the purpose of PostgreSQL Vacuum? PostgreSQL’s “VACUUM” is a maintenance operation designed to reclaim storage occupied by expired … Read more

This article will show you how to drop a constraint, such as a foreign key constraint, on a PostgresSQL database. There are several different types of constraints and we’ll show you examples of each. Sure, here are the same instructions with headers and sub-headers: Dropping a PRIMARY KEY Constraint in PostgreSQL To remove a primary … Read more

PostgreSQL is one of the most powerful and widely used relational database management systems (RDBMS). Managing database size effectively is crucial to ensure performance, scalability, and efficient resource utilization. Understanding how to measure and monitor database size is an essential skill for database administrators and developers. This article explores how to find the PostgreSQL database … Read more