Hi, I'm Ramesh Babu!

Rameshdba.com

 Welcome to rameshdba.com — your dedicated hub for everything Oracle DBA, PostgreSQL, DevOps, Infrastructure Management, and Cloud Platforms.

With over 4+ years of real-time industry experience, I've handled critical enterprise systems, performed complex migrations, built standby setups, implemented RAC and Data Guard, automated database tasks using Ansible, and managed both Linux and Windows servers in demanding production environments.

What I Do:

Oracle Database Administration (12c, 18c, 19c, 21c)

PostgreSQL Configuration & Performance Tuning

Data Guard, RAC, GoldenGate Replication

DevOps Automation (Ansible, Shell, Python)

Infrastructure Security & Backup Strategies

Windows & Linux Server Administration

Performance Optimization & Real-time Issue Resolutions

Why This Blog?

Because theory is everywhere, but real production knowledge is rare. This blog is built to share real-time DBA issues, infra tricks, performance tuning tips, automation projects, and practical solutions that DBAs and system admins face daily.

Follow My Journey:

👉 YouTube: https://www.youtube.com/@RameshDBA07

👉 GitHub: RameshDBA

👉 LinkedIn: https://www.linkedin.com/in/rameshbabu-dba-60b237149/

👉 Telegram: RAMESHBABUDBA

Let’s build, automate, and optimize together...

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DELETE Statement in ORACLE DB— Step by Step Internal Flow with classroom example.

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Imagine your Oracle database like a school, and you’re Teacher decides to remove a student (row) from the classroom(table). Let’s see how the journey works step by step: 1)Classroom = Oracle Table 2)Students = Rows (Records) 3)Class Teacher = Oracle Server Process 4)Attendance Register = Data Dictionary User fires DELETE statement: DELETE FROM students WHERE grade = 'D'; Internal Processing Steps: Client Process Sends DELETE Statement to Server Process The teacher receives a request to remove a student from the classroom. Syntax Check (Parsing) The teacher checks if the request is grammatically correct — proper command, keywords, and a semicolon. Semantic Check Teacher verifies if the classroom exists and whether the condition (like grade = 'D') makes sense. Object Resolution Teacher confirms that the ‘students’ classroom (table) exists in the school records (data dictionary). Optimization Decides the fastest way to find those students — by roll number, grade, or al...
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