26ai_en Oracle GoldenGate 23ai Setup | DB 26ai Free Replication
This article explains the procedure for performing data replication between Oracle Database 26ai Free environments using...
DBA
26ai_en 26ai_en Oracle AWR Usage Guide: Steps to Generate Reports and Basics of Analysis [26ai Compatible]
Oracle AWR (Automatic Workload Repository) is the de facto standard for performance analysis in Oracle Database Enterpri...
26ai_en Oracle Statspack Usage: Installation and Automatic Snapshot Configuration in 26ai Free (PDB) Environment
Oracle Statspack is a powerful free tool for performance analysis in Standard Edition (SE2) and the latest Oracle Databa...
English Applied Oracle SQL Aggregation! Re-aggregating GROUP BY Results and ROLLUP
"I was able to calculate the total salary for each department. But how do I get the average of those department totals?"...
English A Comprehensive Guide to NULLIF and COALESCE Functions: Practical Applications
1. IntroductionHandling NULL values is unavoidable when working with Oracle databases. This article provides a detailed ...
English Oracle SQL: The Difference Between WHERE and HAVING! Execution Order and Usage
When writing SQL for Oracle Database, the difference between the WHERE clause and the HAVING clause is one of the most c...
English Oracle SQL Aggregate Functions: Handling NULLs and Using DISTINCT
"The total sum is less than expected." "The average value doesn't match my manual calculation."When performing data anal...
English How to Use Oracle SQL GROUP BY and HAVING! Aggregation and Conditions
"I want to calculate the total salary for each department." "I want to extract only classes with an average score of 80 ...
Data Types_en Explicit Data Type Conversion: The Basics and Applications for Error-Free SQL
In Oracle Database, the need to handle different data types arises frequently. When this happens, it is crucial to perfo...
26ai_en Oracle AI Database 26ai: Usage of BOOLEAN Data Type and New SQL Common Sense
Oracle AI Database 26ai, the latest Long Term Support (LTS) release, was announced in October 2025.In this version, the ...