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Setting up Oracle Database 19c and Grid requires thorough preparation of the environment, including essential configurations for hosts, security, disk setup, and user access. Here’s a comprehensive guide that walks you through each step, ensuring a smooth installation on a…
In this guide, I’ll walk you through how I prepared disks for an Oracle environment, where sda was allocated for ASM (Automatic Storage Management) to store data, and sdb was configured for the /u01 directory, housing the Oracle and Grid…
In the world of database administration, performance issues can appear unexpectedly, impacting critical routines and frustrating end-users. Recently, I encountered a performance issue where a routine was running slowly. After analyzing and tracing the session, I successfully optimized the query…
In this article, I’ll guide you through updating the OPatch utility and performing a pre-check to ensure smooth patch application in Oracle 19c. We will be using the OPatch utility located in /u01/patch/patch_1924 to update to PSU 19.24. 1. Preparing…
Maintaining database indexes is a critical task for any DBA to ensure optimal performance in query execution. While it might be tempting to rebuild an index simply because it’s large or growing, a more rational and efficient approach involves analyzing…
Managing storage space in Oracle databases is crucial for maintaining performance and optimizing resource usage. In this post, we’ll explore practical queries to identify tables and indexes that consume significant space, and how to monitor index usage over time to…
Understanding processor performance is crucial for optimizing Oracle Database efficiency. Processor architectures like CISC and RISC, the impact of TDP, CPU behavior under load, and technologies like clock multipliers and superclusters all play a vital role in how Oracle databases…
Mistakes happen. Whether it’s an accidental commit or a bulk update gone wrong, Oracle provides several ways to recover data. One of the most powerful features in Oracle for this purpose is the Flashback Version Query. This tool allows you…
Managing Oracle databases efficiently requires the right set of tools and connectivity options. In this post, we’ll cover several essential Oracle tools for accessing, managing, and monitoring databases, from the classic SQL*Plus to the powerful Oracle Enterprise Manager (OEM). We’ll…
In the final part of this series, we will rename the duplicated Oracle database. After duplicating a database, renaming it is crucial to avoid conflicts with the original source database. Step 1: Shut Down the Database on the Destination Server…
