Tuning

Oracle Database Statspack Installation Guide - Complete Setup and Configuration Purpose Statspack is a snapshot-based way to see what an Oracle database did between two points in time. AWR is the better-known alternative, and the license position differs. Oracle's Licensing Information guide lists the Automatic …

Oracle Statspack Snapshot Levels: Complete Guide to Database Performance Monitoring Oracle Statspack snapshots are essential tools for database performance monitoring that capture system statistics at different granularity levels. Understanding how to properly execute snapshots and choose appropriate levels is crucial …

Monitoring PGA Usage by Username in Oracle Database Purpose V$SESSTAT is the view that holds one statistic value per session, and two of its statistics describe how much Program Global Area (PGA) memory a session uses right now and the most it has used. The script below joins V$SESSTAT to V$STATNAME, filters the …

Oracle Database SGA Breakdown Script for Performance Monitoring Monitoring memory usage in an Oracle Database is one of the most important tasks for a DBA. The System Global Area (SGA) plays a crucial role in the performance of the database, as it stores data and control information used by Oracle processes. In this …

Oracle Database: Find Query Hash Value Using V$SQLAREA Finding specific SQL queries in Oracle Database can be challenging when dealing with large systems running thousands of statements. This guide demonstrates how to efficiently locate query hash values using the V$SQLAREA system view by searching for unique text …

Oracle Database Query: Find Tables with Outdated Statistics Purpose This Oracle Database query helps database administrators monitor the progress of table statistics collection by identifying tables that have analyze dates older than the current date. It's particularly useful when running large-scale ANALYZE operations …

Oracle Performance Tuning: Analyzing Latch Contention with "Time Waited for Latches" using Using Oracle Tables v$system_event and v$sysstat Purpose In the world of Oracle database performance tuning, identifying and resolving latch contention is critical for maintaining a responsive system. Latches are low-level …