PostgreSQL DBA Archives - Page 4 of 8 - The Data Transformation Company

How to reclaim the storage in PostgreSQL after Vacuum?

PostgreSQL Vacuum When you run a standard VACUUM command in PostgreSQL, you might notice that it doesn’t free up space at the operating system level, even though it cleans up dead tuples within the database. […]

PostgreSQL Execution Plan Analysis

PostgreSQL Execution Plan PostgreSQL execution plan analysis is critical for diagnosing query performance issues. Here’s how to interpret optimiser decisions and identify bottlenecks: Generating Execution Plans First, Generate basic plan estimation: EXPLAIN SELECT * FROM […]

What is new with pg_stat_statements in PostgreSQL 17?

New Features in pg_stat_statements in PostgreSQL 17 1. Tracking of Nested Statements PostgreSQL 17 adds the ability to track nested statements executed within functions, procedures, and DO blocks: Previously, only top-level statements were tracked However, […]

PostgreSQL Checkpointing and Background Writing Process

PostgreSQL Checkpointing PostgreSQL checkpointing is crucial in maintaining data integrity and ensuring consistent database performance. It works in tandem with background writing processes to manage disk I/O efficiently, reducing the risk of data loss in […]

PostgreSQL Vacuum and Vacuum full are not two different processes

PostgreSQL Vacuum and Vacuum full are not two different processes PostgreSQL Vacuum: PostgreSQL‘s VACUUM and VACUUM FULL are not separate processes but rather different operational modes of the same maintenance command. Here’s why: Core Implementation […]

SQL Window Functions for Time-Series Analysis in PostgreSQL 17

Advanced SQL Window Functions for Time-Series Analysis in PostgreSQL 17 Window functions in PostgreSQL are powerful tools for analysing time-series data, enabling complex calculations across rows without the need for self-joins or complex subqueries. This […]

Streaming Replication Across Kubernetes Postgres Clusters

Streaming replication across Kubernetes Postgres clusters is an effective way to enhance high availability and disaster recovery for PostgreSQL databases running in containerized environments. Here’s an overview of how to set up and optimize this […]

Best Practices for Efficient Large-Scale PostgreSQL Database Migrations

PostgreSQL Database Migration Migrating multi-terabyte PostgreSQL databases requires careful planning to balance speed, data integrity, and system availability. As organizations scale to petabyte-scale datasets, traditional migration methods often fall short, leading to prolonged downtime and […]

Five Tips For a Healthier Postgres Database in the New Year

As we enter the new year, database administrators and developers face the ongoing challenge of maintaining healthy PostgreSQL databases. A well-maintained database is crucial for application performance, data integrity, and system reliability. This article presents […]

Oracle to PostgreSQL Migration Series – NoValidate and Parallel Constraints in PostgreSQL

Can you implement NoValidate and Parallel Constraints in PostgreSQL? Oracle to PostgreSQL Migration Blog series PostgreSQL does not have a direct equivalent to Oracle’s NOVALIDATE option for constraints. However, there are some strategies to achieve […]