DB statistics collection , Online Table Reorg and Index Reorganization in Oracle Database

This document provides an overview of the process of collecting database statistics, performing online table reorganization, and index reorganization in Oracle Database. Collecting database statistics is important for optimizing query execution plans and improving overall database performance. It involves gathering information about the objects in the database, such as tables and indexes, and storing this information in the data dictionary. Online table reorganization allows for restructuring and optimizing large tables without impacting the availability of the database. It involves redistributing data within the table and reclaiming any wasted space. Index reorganization, on the other hand, focuses on improving the performance of indexes by rebuilding or reorganizing them. These processes are essential for maintaining a healthy and efficient Oracle database environment.