DBA

26ai_en

[Oracle 26ai] Complete Guide to Introducing the Next-Generation Standard “CO (Customer Orders)” Sample Schema

Hello, Oracle Engineers! Are you enjoying your 26ai life? We have entered the Oracle Database 26ai (23ai) era, and the w...
2026.01.05
26ai_enCDB/PDB_enEnglishOracle Basics_enOracle Overview_enSQL_enViews_en
26ai_en

How to Use Oracle FreeSQL: How to Execute SQL Without Building an Environment [Supports 19c/23ai/26ai]

Do you want to start learning or verifying Oracle Database, but face issues such as "frustrated by the complex environme...
2026.01.04
26ai_enEnglishOracle Basics_enOracle Overview_enSQL_en
26ai_en

Prepare for Oracle 26ai! CDB/PDB Basic Operations Summary: Complete Guide to Startup, Connection, and Management Commands

The architecture of Oracle Database is undergoing its most significant transformation in the last 20 years. Starting wit...
2026.01.03
26ai_enCDB/PDB_enDatapump_enEnglishOracle Basics_enOracle Overview_enOracleNet_en
26ai_en

What are the Differences Between Oracle Database 23ai and 26ai? Explaining How Patching Transforms it into “26ai”

Among engineers and IT architects following the latest information on Oracle Database, the two version notations—"23ai" ...
2026.01.02
26ai_enEnglishOracle Basics_enOracle Installation_enOracle Overview_en
26ai_en

Oracle 19c vs 26ai Initialization Parameter Comparison | New Features and Deprecated List

In the evolution from Oracle Database 19c to the latest Oracle Database 26ai (FREE), initialization parameters have chan...
2026.01.01
26ai_enEnglishInitialization Parameters_enOracle Basics_enOracle Overview_en
Data Types_en

A Guide to Oracle’s Date/Time Functions

This article provides a detailed explanation of Oracle Database's date/time functions—ADD_MONTHS, MONTHS_BETWEEN, NEXT_D...
2025.12.31
Data Types_enEnglishSQL_enSilver_en
26ai_en

[Definitive Guide] Oracle AI Database 26ai Free (Windows) Installation Instructions

"Oracle AI Database 26ai Free" has finally arrived! As the successor to the traditional "XE (Express Edition)" and "23ai...
2025.12.30
26ai_enCDB/PDB_enEnglishOracle Basics_enOracle Installation_enOracle Overview_enOracle_install_en
Data Types_en

Mastering Date/Time Arithmetic: An Operations Guide for Oracle SQL

The ability to handle dates and times in Oracle SQL is essential for data extraction, aggregation, and improving operati...
2025.12.29
Data Types_enEnglishSQL_enSilver_en
English

Completely Master Oracle SQL’s MOD and POWER Functions!

This article provides a thorough explanation for beginners on the MOD and POWER functions, which are extremely useful in...
2025.12.26
EnglishSQL_enSilver_en
26ai_en

ORACLE MASTER 26ai Announced! Urgent Reasons to Secure “19c” Certification Before Exam Content Changes Drastically

Oracle AI Database 26ai has finally been officially announced, and the full picture of the certification system has been...
2025.12.23
26ai_enBronze_enEnglishGold_enSilver_en
26ai_en

[26ai New Feature] What is Oracle AI Vector Search? Explanation of Mechanism and Implementation

The biggest highlight feature of Oracle Database 26ai (formerly 23ai) is "AI Vector Search." Until now, this technology ...
2025.12.16
26ai_enEnglishOracle Basics_enOracle Overview_en
26ai_en

Oracle Database 26ai Free Installation Guide [RHEL8/Oracle Linux 8]

This article explains the installation procedure for "Oracle AI Database Free (26ai)," which allows you to experience th...
2025.12.14
26ai_enCDB/PDB_enEnglishOracle Basics_enOracle Installation_enOracle Overview_en
26ai_en

Oracle AI Database 26ai On-Premises Release Set for Jan 2026! Differences from 19c and New AI Features Explained(Name changed from 23ai)

It has been revealed that the on-premises Enterprise Edition (Linux x86-64) of "Oracle AI Database 26ai," which will be ...
2025.12.13
26ai_enCDB/PDB_enEnglishOracle Basics_enOracle Overview_en
English

A Comprehensive Guide to the Oracle WHERE Clause!

The WHERE clause is essential when extracting data using SQL. It enables efficient data management by retrieving only th...
2025.12.03
EnglishSQL_enSilver_en
English

Mastering DISTINCT! How to Eliminate Duplicate Data and Apply It

When manipulating data with SQL, you often encounter situations where you want to "eliminate duplicate data." For exampl...
2025.12.01
EnglishSQL_enSilver_en
English

Understanding NULL in Oracle Database

In Oracle Database, NULL signifies that a "value is unknown" or in a "state of absence." This is different from "zero" a...
2025.11.28
EnglishSQL_enSilver_en
Date and Time Data_en

How to Convert Strings to Datetime Data

In Oracle Database, converting strings to datetime data types is a crucial task. For example, converting date strings im...
2025.11.26
Date and Time Data_enEnglishSQL_enSilver_en
Oracle Basics_en

Explaining the Oracle dual Table!

When working with the Oracle database, the dual table is an entity you will almost certainly encounter. While its name m...
2025.11.19
Oracle Basics_enSQL_enSilver_en
Data Types_en

Mastering Oracle Table Creation and Data Types

Creating tables in an Oracle database is fundamental to efficient data management. This article provides a detailed expl...
2025.11.17
Data Types_enEnglishSilver_enTables_en
English

Explaining the Basics of the Oracle SELECT Statement

The SELECT statement is the most basic and important SQL statement for operating an Oracle database. It allows you to ex...
2025.11.14
EnglishJoins_enOracle Basics_enSQL_enSilver_en
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