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Oracle Launches FREE Agentic AI Foundations Associate Certification (1Z0-1157-26)

Artificial Intelligence is rapidly transforming the way modern applications are built, and Agentic AI is becoming one of the most exciting areas in enterprise technology. To help professionals gain foundational knowledge in this domain, Oracle has introduced the Oracle Agentic AI Foundations Associate Certification (1Z0-1157-26) —and the best part is that it is completely FREE . URL: https://mylearn.oracle.com/ou/learning-path/become-an-oracle-agentic-ai-foundations-associate/163239 Whether you’re an Oracle DBA, Cloud Engineer, Developer, AI enthusiast, or student, this certification provides an excellent opportunity to understand how AI agents work and how Oracle is integrating AI into its cloud ecosystem. What is Oracle Agentic AI? Agentic AI refers to intelligent AI systems that can reason, plan, make decisions, and perform tasks autonomously using Large Language Models (LLMs), tools, APIs, and enterprise data. Oracle’s Agentic AI ecosystem combines: Oracle Cloud Infras...

Changing the hostname in Linux

(adsbygoogle = window.adsbygoogle || []).push({}); Changing the hostname in Linux depends on your distribution and whether you're using **systemd** (most modern distros do). 1. Check Current Hostname [root@test ~]# hostnamectl status Static hostname: test.localdomain Icon name: computer-vm Chassis: vm [root@test ~]# date Thu Aug 14 15:53:54 +04 2025 [root@test ~]# uptime 15:53:56 up 1 min, 1 user, load average: 2.46, 0.70, 0.24 2. Change Hostname (Permanent) Using `hostnamectl` (Recommended for systemd-based systems like Ubuntu, CentOS 7+, RHEL 7+, Debian 9+) sudo hostnamectl set-hostname new-hostname [root@test ~]# hostnamectl set-hostname muthu.org > Replace `new-hostname` with your desired name. 3. Update `/etc/hosts` Edit the file: sudo nano /etc/hosts [root@test ~] vi /etc/hosts Find the line like: 127.0.1.1 old-hostname And change it t...

Oracle Execution Plans Explained: A Complete Guide to SQL Performance Tuning in Oracle Database

Performance tuning is one of the most critical responsibilities of an Oracle Database Administrator. While adding indexes or rewriting SQL statements can improve performance, the real key to optimization lies in understanding how Oracle executes a SQL statement . This is where the Oracle Execution Plan becomes invaluable. An Execution Plan acts as Oracle’s roadmap, showing the exact path the Cost-Based Optimizer (CBO) chooses to retrieve the requested data. By learning how to interpret execution plans, DBAs can identify bottlenecks, optimize queries, and significantly improve database performance. In this guide, we’ll explore Oracle Execution Plans, optimizer behavior, access paths, join methods, and practical SQL tuning techniques used in real production environments. What is an Oracle Execution Plan? An Execution Plan is a detailed representation of how Oracle executes a SQL statement. It describes: Which tables Oracle accesses Whether Oracle uses indexes or perform...

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