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Troubleshooting Network Issues in Oracle RAC 19c – Step-by-Step Guide Oracle Real Application Clusters (RAC) 19c provides high availability and scalability, but network issues can impact node communication, cluster stability, and performance. Here’s a step-by-step approach to troubleshooting network problems in an Oracle RAC environment. 🛠️ Step 1: Verify the Network ConfigurationCheck if the Public, […]

🔍 Understanding PostgreSQL Architecture: A Deep Dive into Its Processes & File System 🚀PostgreSQL is a powerful, open-source relational database management system (RDBMS) known for its scalability, extensibility, and ACID compliance. But what makes it so efficient? Let’s explore its architecture, background processes, and file system in detail. 🏗️ PostgreSQL Architecture: Key ComponentsPostgreSQL follows a […]

Installing PostgreSQL 17.4 on Windows & Linux – Step-by-Step GuidePostgreSQL is one of the most powerful and widely used open-source relational databases.Here’s how you can install PostgreSQL 17.4 on Windows and Linux. 🔹 Installation on Windows1️⃣ Download the installer from the official PostgreSQL website.2️⃣ Run the installer (.exe) and follow the wizard instructions.3️⃣ Choose components […]

Oracle RAC (Real Application Clusters) enables seamless high availability and performance scaling for mission-critical databases. However, ensuring effective load balancing is crucial for optimal efficiency. Let’s explore real-time load balancing techniques in Oracle RAC 19c: 🔹 1. Client-Side Load Balancing✅ Distributes connection requests across multiple RAC nodes.✅ Uses Load Balancing Advisory (LBA) with TNS LOAD_BALANCE=ON […]

🔹 What is PostgreSQL?PostgreSQL (often called Postgres) is an open-source relational database management system (RDBMS) known for:✅ ACID compliance – Ensuring data consistency✅ Extensibility – Supporting custom functions, data types, and procedural languages✅ Advanced indexing – Including GIN, BRIN, and full-text search✅ Replication & partitioning – Enabling high availability and scalability✅ JSON & NoSQL support […]

Facing a multi-node database crash in Oracle RAC can be a critical challenge, but with the right approach, recovery is seamless. Recently, I encountered such a situation and successfully reinstated the Oracle RAC environment. Here’s how I did it: ✅ Steps to Reinstate Oracle RAC Multi-Node Instance After a Crash:1️⃣ Identify the Cause of the […]

Understanding Oracle Exadata Architecture and Configuration: Key Insights & Commands🚀 Oracle Exadata is a high-performance, optimized platform for running Oracle databases. Its architecture combines powerful database servers, storage servers, and a high-speed fabric to deliver unparalleled performance, scalability, and reliability. 🔹 Key Components of Exadata Architecture:✅ Database Servers (Compute Nodes): Run Oracle Database instances.✅ Storage […]

🛠️ Steps to Restore a Lost Control File in 19c RAC:✅ Step 1: Check the Status of the RAC DatabaseSince the control file is missing, the database may not start. Use: startup;You might see an error:ORA-00205: error in identifying control file, check alert log ✅ Step 2: Identify Available Backup of the Control FileIf RMAN […]

🚀 Keeping Your Oracle Data Guard Healthy! 🚀 If you’re managing an Oracle Data Guard setup, regular health checks are crucial to ensure seamless disaster recovery and high availability. Here are 10 essential SQL queries that help monitor and troubleshoot Data Guard performance. 📊🔍 1️.Check Data Guard Role & Database Mode SELECT DATABASE_ROLE, OPEN_MODE FROM […]

🏗️ Oracle 19c Database Architecture Explained | Beginners to Advanced 🚀 Oracle Database 19c follows the multi-tenant architecture with optional pluggable databases (PDBs). It consists of several key components: 📂 1️.Physical Storage Structures Oracle Database stores data in three types of physical files:✅ Data Files (.dbf) – Store actual user and system data.✅ Redo Log […]