English Oracle SQL Set Operators: How to Use UNION ALL, MINUS, and More
Have you ever wanted to compile data scattered across multiple tables into a single list, or compare two datasets to ext...
oracle database
English 26ai_en How to Verify Applied Patches in Oracle 26ai: The Reality of the Latest RU 23.26.1.0.0
In January 2026, the long-awaited Oracle Database 26ai installer was released. To fully leverage the latest AI capabilit...
English Oracle SQL Non-Scalar Subqueries: How to Handle Multiple Rows and Columns
When extracting complex data with SQL, "subqueries" are unavoidable. However, do you struggle with the error "single-row...
English Introduction to Oracle SQL Subqueries! From Basics to Speed Optimization
Do you ever struggle when writing SQL, thinking "I want to use the result of another aggregation in a condition" or "I w...
English Oracle SQL Scalar Subqueries: From Basics to Optimization Strategies
When extracting data with SQL, do you ever struggle with requirements like "I want to fetch just one value from another ...
26ai_en Oracle Database 26ai Complete Deletion Guide: How to Use the deinstall Command
Are you looking for a safe and reliable way to uninstall Oracle? Manual deletion using rm -rf can leave configuration fi...
English Complete Guide to Oracle SQL Table Joins (JOIN)! Mastering with Diagrams and Samples
"Table Joins (JOIN)" are an unavoidable part of working with databases."Should I use an inner join or an outer join, and...
26ai_en Oracle GoldenGate 23ai Operations Guide: Startup/Shutdown Procedures and Permission Settings
This document outlines the standard startup and shutdown procedures for Oracle GoldenGate 23ai (Microservices Architectu...
26ai_en [Verification] Tried Installing Oracle AI Database 26ai (Single) on OL8
Oracle AI Database 26ai was released the other day. I was able to download it immediately, so this time I tried installi...
26ai_en [Breaking News] Oracle AI Database 26ai On-premises Download Available! OSDC Availability and GI Support
Updated Jan 28, 2026: The highly anticipated on-premises version (Linux x86-64) of Oracle AI Database 26ai and Oracle Gr...