Scripts

Oracle Database Statspack Snapshot Purge Script: Complete Guide to sppurge Administration The Oracle Database @?/rdbms/admin/sppurge; command is a critical administrative script used to delete old Statspack snapshots and manage storage space in the PERFSTAT schema. This comprehensive guide explores the purpose, …

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 …

How to Monitor Oracle Shared Pool Usage with V$SGASTAT Database Administrators (DBAs) frequently need to track memory allocation inside Oracle’s SGA (System Global Area), especially within the Shared Pool. Monitoring the shared pool helps identify memory fragmentation, excessive parsing, and potential memory-related …

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 SQL Performance Analysis Query - Monitor SQL Execution Statistics Purpose This Oracle SQL query is designed to analyze the performance characteristics of a specific SQL statement by examining key execution metrics stored in the v$sqlarea dynamic performance view. Database administrators and performance analysts …

Oracle SQL Hash Lookup Query - Retrieving SQL Text from V$SQLAREA Purpose This Oracle Database query is designed to retrieve the SQL statement text (the first 1,000 characters) from the V$SQLAREA view using a specific hash value. This is particularly useful for database administrators and developers who need to …

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 EXPLAIN PLAN: SQL Performance Analysis Guide Purpose A full table scan in an execution plan is not always a fault. The optimizer can choose it on purpose. If its statistics show that most rows match, reading the whole table can be the cheapest path. The plan is where you see this choice. EXPLAIN PLAN is the …

Oracle Database Autotrace Commands: Complete Guide to SQL Execution Plan Analysis Oracle Database's autotrace feature is a powerful built-in tool that enables database administrators and developers to analyze SQL statement performance by displaying execution plans and runtime statistics. This comprehensive guide covers …