ADR_en Complete Guide to the Oracle Database Alert Log
The alert log is Oracle’s chronological record of instance health and incidents. If you can read the alert log fast, you...
oracle database
ADR_en Bronze_en Oracle SQL INSERT … SELECT: Practical Techniques in 19c
When you need to move or transform a large volume of data in one go, insert select is a go-to technique. This article wa...
Bronze_en Oracle SQL INSERT: Getting Started with Adding Data
The basic operation for adding a new row (record) to a database is oracle insert. This article explains the correct way ...
ADR_en Log Review and Response Guide When Trouble Occurs
When an issue hits your oracle environment, the quickest recoveries start with a fixed plan for which logs to check and ...
English Dedicated Server Connection -For Those Who Want to Solve “Heavy Workloads” with Dedicated Server Connections
“When the number of connected users increases, server processes multiply too much.”“The response of batch jobs becomes u...
English Oracle Database Shared Server Connections Explained Clearly and Accurately (Differences from Dedicated Connections / Configuration Steps / Monitoring)
“If the number of connected users increases, the number of processes explodes and slows down.”“If web applications have ...
DBLINK_en Oracle Synonyms Complete Guide: Creation, Privileges, Verification, and ORA Error Solutions
“I want to remove schema names from my application SQL.”“I want to switch the referenced table depending on the environm...
English Listener Connection Failover and Load Balancing Explained
To improve the reliability and performance of Oracle Databases, proper configuration of failover and load balancing in l...
ADR_en Oracle Database ADR (Automatic Diagnostic Repository): A Comprehensive Guide
In operating Oracle Database, quickly detecting and resolving errors or failures is essential for maintaining system sta...
English Oracle Troubleshooting: 20 Common Errors and Their Solutions
When working with Oracle Database, you may encounter various errors. These errors can arise due to system misconfigurati...
Bronze_en Complete Guide to NULL in Oracle Database
In Oracle Database, NULL is not just a blank field. It represents a special concept—"an unknown or missing value." Misha...
Bronze_en Sorting Data with SQL: A Complete Guide to the ORDER BY Clause
This article provides a comprehensive explanation of the ORDER BY clause used in Oracle SQL. Sorting is an essential ski...
Bronze_en Mastering the WHERE Clause in Oracle SQL: Complete Guide with Examples and Diagrams
The WHERE clause is essential when retrieving data from Oracle SQL tables.This article provides a thorough explanation—f...
Bronze_en OracleNet Complete Guide: Comprehensive Explanation of Listener Dynamic Configuration
Understanding how to configure the Oracle database listener is crucial for effective database management. Dynamic listen...
Bronze_en OracleNet Complete Guide: Detailed Explanation of Listener Mechanisms and Static Configuration
OracleNet plays a critical role in managing Oracle databases. Understanding how to configure the listener allows for fle...
Bronze_en What Are Oracle Background Processes? Detailed Explanation with Diagrams
When starting to learn Oracle Database, many beginners get confused by the term “background process.” In this article, w...
Bronze_en Complete Guide to Oracle Memory Architecture: SGA, PGA Structures, Management Methods, and Monitoring
Proper memory management is essential to achieving stable operation and high performance in Oracle Database.This article...
Bronze_en Oracle SGA (System Global Area): Complete Explanation with Diagrams of Its Structure and Components
In Oracle Database memory management, the System Global Area (SGA) plays a central role in determining performance and s...
English Understanding Oracle PL/SQL: Basic Structure, Features, and Control Syntax Explained
PL/SQL (Procedural Language/SQL) is Oracle's powerful procedural language designed to handle complex processing directly...
Bronze_en What is an Oracle Instance? Structure, Startup, Shutdown – Explained with Diagrams
When working with Oracle, understanding the concept of an instance is fundamental.This article provides a complete expla...