DBA

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Oracle Tablespace Local Management: How to Create and Choose

Introduction (100–160 chars)In oracle 19c, creating a tablespace with local management automates extent management and s...
Database Design_en

Oracle OS Authentication: Configuration Steps and Practical Points

Oracle Database provides two authentication methods: database authentication, which uses credentials managed inside the ...
English

Oracle TNS_ADMIN: Proper Usage and Configuration Steps [Linux/19c]

Introduction (Summary)When you want to centrally manage Oracle connection settings, use the TNS_ADMIN environment variab...
English

Oracle DBMS_PRIVILEGE_CAPTURE: Introduction to Privilege Analysis

To operate Oracle Database securely, it is important to grant users only the minimum required privileges. Leaving unnece...
Oracle Basics_en

Oracle Database Profile Configuration Guide

The basics of account administration are to assign an appropriate profile to each oracle user and standardize password p...
English

Oracle Database 19c User Creation and Management

In this article, we will walk through how to create and manage a user in an oracle database, specifically assuming a non...
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...
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...
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...