English Oracle SQL: Adding, Modifying, and Dropping Columns | The Complete ALTER TABLE Guide
"I want to add a new column to an existing table.""I want to change a text column to a numeric type.""I want to delete a...
oracle database
English English Tips for Creating, Deleting, and Using Oracle Temporary Tables (GTT)
Oracle temporary tables are a convenient feature that holds data only within a session and automatically deletes it afte...
English Oracle SQL Arithmetic Operators and Numeric Data Types: A Complete Guide to Calculation Basics and NULL Traps
Introduction: To Obtain Accurate Calculation ResultsIn system development using Oracle Database, amount calculations and...
Constraints_en Oracle SQL Constraints: Complete Command Collection for Adding, Dropping, and Checking | Error Handling
"Oracle Constraints" are a mechanism to protect data integrity and quality. This article explains how to add, drop, and ...
English Oracle DROP TABLE and Flashback Drop: How to Restore Dropped Tables
In database management, "accidentally deleting an important table with DROP TABLE" is a moment that causes a cold sweat....
26ai_en Oracle 26ai Fastest Deployment Guide: Silent Installation Procedures for Oracle VM
When building a verification environment, the most efficient method is Silent Installation. By loading a pre-prepared re...
26ai_en Oracle Response Files: Key Points for 23ai/26ai Silent Installation
In the deployment of Oracle Database 23ai (including the latest 26ai), "Silent Installation"—which completes the setup v...
English Oracle Transaction Basics: COMMIT, ROLLBACK, and Savepoints
When operating an Oracle Database, the most critical concept for maintaining data integrity is the "Oracle Transaction."...
English Oracle SQL Sequence Creation and Auto-Numbering Basics [CREATE SEQUENCE]
An Oracle Sequence (SEQUENCE) is a database object used to automatically generate unique sequential numbers. It is prima...
English How to Make Oracle Tables Read-Only and Move Them [ALTER TABLE]
In the operation of Oracle Database, there are frequent situations where you want to prevent accidental updates to maste...
English Oracle SQL Index Basics and Creation Steps | Optimization and Tuning
Search is slow. The overall system response is poor. In such cases, the first thing to suspect is the "Index" configurat...
English Specifying Column Default Values
Specifying default values for columns in an Oracle Database is an important method for ensuring efficient data entry and...
EMCC_en Oracle EM13.5 Architecture: A Comprehensive Overview of Components and Communication Paths
When introducing or operating Oracle Enterprise Manager Cloud Control 13.5 (EM13.5), understanding how each component in...
EMCC_en Oracle EM13.5 Startup and Shutdown Procedures: Fundamentals of Operation Management
In the operation of Oracle Enterprise Manager Cloud Control 13c (EM13.5), understanding the "correct startup and shutdow...
EMCC_en Oracle EM13.5 Setup Guide: Complete Walkthrough [Oracle Linux 8 / 19c]
When setting up Oracle EM13.5 on Oracle Linux 8, have you ever experienced the GUI installer freezing or failing due to ...
26ai_en Does Patching Oracle GoldenGate 23ai Make it “26ai”? Latest Update Procedures
When applying the latest patches to Oracle GoldenGate 23ai (OGG 23ai), we have confirmed that the notation in the GUI an...
26ai_en Oracle Data Guard Overview and Benefits: Basics of Disaster Recovery and High Availability
Oracle Data Guard provides the highest level of availability for Oracle Database. In this article, we will explain the o...
26ai Oracle 26ai Data Guard Broker Setup Procedure [OL8]
This article explains the complete procedure for building a High Availability (HA) configuration using Data Guard Broker...
26ai_en Oracle 26ai RAC PDB Creation and Deletion: Complete Step-by-Step Guide
Operating PDBs in an Oracle 26ai RAC environment requires not only SQL execution but also resource registration with srv...
26ai_en Oracle RAC 26ai PDB srvctl Management Guide: New Standards for PDB Start/Stop
Starting with Oracle Database 21c, it has become possible to control Pluggable Databases (PDBs) directly using the srvct...