Performance Optimization

Understanding Oracle Database Statistics Gathering: A Comprehensive Guide Purpose DBA_TAB_STATISTICS is the view that shows what the optimizer knows about each table: the number of rows, the average row length and the number of data blocks. DBMS_STATS is the package that fills those numbers in. The optimizer reads them …

Optimizing Performance with Oracle Database: Gathering Schema and Table Statistics Purpose Automatic optimizer statistics collection runs by itself inside the maintenance windows. Manual DBMS_STATS calls run when you decide, on the objects you choose, with the options you set. The SQL Tuning Guide names a different …

Optimizing Undo Retention in Oracle Databases We will explain how to optimize the undo_retention parameter in Oracle databases using the SQL command ALTER SYSTEM SET undo_retention = 500 SCOPE = MEMORY;. Understanding this parameter is crucial for effective transaction management, rollback capabilities, and maintaining …