Oracle DBA

Introduction In real-world enterprise systems, data is rarely stored in a single database.Applications often need to read or write data […]

Introduction For every SQL statement, the Oracle Optimizer considers multiple execution plans and selects the plan with the lowest estimated

Step 1: Verify Oracle Environment Login as oracle user and confirm: Example: 🔹 Step 2: Update /etc/oratab Edit the file

Assume: 🔹 PART 1: Install JDK 17 (RPM) 1️⃣ Switch to root 2️⃣ Verify the RPM file (Optional check) 3️⃣

IMPORTANT WARNING (READ FIRST) This process will: 👉 Proceed only if you are 100% sure no data is required(If needed,

OS: RHEL 7.x (64-bit) User: oracle Install type: Single Instance – Enterprise/Standard Edition Filesystem based (not ASM) You have root