database replication

Master-Slave Replication in MySQL: A Step-by-Step Guide

MySQL /

Introduction MySQL master‑slave replication remains a foundational technology for database scaling, high availability, and disaster recovery. As a Senior Database Administrator, I routinely design and maintain replication topologies that support mission‑critical workloads. In this post we dive into the practical steps required to set up a reliable master‑slave pair, address common pitfalls, and outline best […]

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Setting Up PostgreSQL Streaming Replication for HA

PostgreSQL /

Introduction Streaming replication is the cornerstone of modern PostgreSQL high‑availability solutions. Unlike file‑based WAL shipping, streaming sends WAL records over a TCP socket in real time, allowing a standby to stay close to the primary’s state. This post walks through every step you need to set up streaming replication, from basic configuration to advanced fail‑over

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SQL Server Always On Setup Guide

SQL Server /

Why Choose Always On Availability Groups? Always On Availability Groups (AG) are Microsoft’s native high‑availability and disaster‑recovery (HADR) solution for SQL Server. They provide: Automatic failover with synchronous‑commit replicas. Read‑only routing for reporting workloads. Granular failover at the database level, not the instance level. Support for up to eight secondary replicas (SQL Server 2019+). For

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Oracle Data Guard Setup

Oracle /

Step‑by‑step guide for Oracle DBAs on configuring Data Guard for disaster recovery, covering prerequisites, primary and standby setup, redo transport, role switchover, and performance tuning. Why Oracle Data Guard Matters for Disaster Recovery In today’s 24/7 environment, database downtime translates directly into revenue loss. Oracle Data Guard provides a proven, automated solution for high availability

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Oracle GoldenGate 19c Non CDB to PDB Replication Setup

Oracle /

Oracle GoldenGate 19c Unidirectional Replication from Non-CDB to PDB: A Comprehensive Guide As businesses continue to grow and evolve, the need for efficient data replication and integration becomes increasingly important. One popular solution for achieving this is Oracle GoldenGate, a software tool that enables real-time data integration and replication across various databases. In this article,

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Understanding Oracle Data Guard Architecture: Ensuring High Availability and Disaster Recovery

Oracle /

Oracle Data Guard is a powerful solution for achieving high availability, data protection, and disaster recovery in Oracle databases. In this article, we’ll delve into the architecture of Oracle Data Guard, with a focus on the relationship between primary and standby databases. By the end, you’ll understand how the components work together to maintain a

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