English A Complete Explanation of Segment Shrink vs. DELETE/TRUNCATE Behavior
Efficient operation of Oracle Database requires freeing unnecessary space and optimizing performance. At the core of thi...
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English English Oracle Database Segment Extension — Error Handling and Best Practices
In Oracle Database, as data grows, segments can run short of space, which may trigger errors and degrade performance. Th...
English What Are Deferred Segments? Usage and Caveats
In Oracle Database, when you create a table, a segment (the physical storage area for data) is usually allocated immedia...
English Explaining Segment Management in Oracle Database
To improve the operational efficiency of a database, you need to optimize storage management. At the center of that is s...
Performance_en Oracle SQL Tuning Quick Guide: Execution Plans, Statistics, and Tracing [19c]
This article is a rewritten, more practical, and reproducible version of the original “Oracle SQL Tuning Basics.” While ...
English Row Migration & Row Chaining — Understand Causes, Detection, and Remedies in One Go (Oracle)
To solve database performance issues, you must understand row migration and row chaining. This article digs into both co...
English Segment Space Management Methods and PCTFREE Explained
Oracle Database administrators must correctly understand segment space management and the concept of PCTFREE to manage d...
English Oracle Data Block Row Storage: Mechanism and Verification Steps
Introduction (Summary)In oracle, row storage inside a data block consists of “block header / directory / row data / free...
English How to Use Oracle Managed Files (OMF): Complete Guide to Configuration, Procedures, and Operations
Introduction (Summary)Oracle Managed Files (OMF) is a mechanism that auto-names and auto-places data files, temp files, ...
Data Dictionary Internals_en Oracle Move Data Files: Safe Procedures and Examples [Linux/19c]
When reorganizing storage or cleaning up directories in your Oracle environment, knowing how to move data files safely i...
Data Dictionary Internals_en Oracle Tablespace View Complete Guide: Verify Usage Correctly with DBA_* / V$*
This article explains how to correctly verify the usage and size of tablespaces in Oracle and how to expand capacity whe...
English 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 ...