Oracle Database Query: Find Tables with Outdated Statistics Purpose This Oracle Database query helps database administrators monitor the progress of table statistics collection by identifying tables that have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 …

Show a Count of Analyzed Tables Broken Down by Schema in Oracle Database Purpose: This post explains how to use Oracle SQL to report the total number of tables and the number of analyzed tables for each schema in your Oracle Database. This is crucial for database administrators who want to monitor the health and …

What is the Oracle PLAN_TABLE and how do you use it? Oracle's PLAN_TABLE is a fundamental component for SQL performance analysis and query optimization. This comprehensive guide explores the setup, usage, and best practices for leveraging Oracle's execution plan functionality to optimize database performance. SQL Code …

Oracle ANALYZE Statement: Old-Style Table and Index Statistics Collection The ANALYZE statement in Oracle Database is a legacy tool used to collect statistics on tables and indexes. These statistics help the database optimizer make decisions about the most efficient way to execute SQL queries. Although Oracle now …

Demystifying Oracle Segment Waits: In-Depth Code Analysis and Insights Using Oracle Table v$segment_statistics Purpose In the realm of Oracle database performance tuning, understanding segment waits is crucial. Waits indicate areas where processes are contending for resources, potentially leading to bottlenecks. The …

Top 10 Hottest Objects in Oracle by Touch Count using tables x$bh obj$ and user$ Purpose This Oracle SQL query identifies the top 10 "hottest" objects within your database. In this context, "hot" refers to objects that have been accessed (or "touched") the most frequently. Understanding which objects are frequently …

Identify Waits by Datafile in Oracle using tables v$datafile and x$kcbfwait Purpose In Oracle databases, waiting events often indicate performance bottlenecks. This SQL query helps you pinpoint which datafiles are associated with the most wait events. By understanding where waits are occurring, you can take targeted …

Oracle Database: Understanding Lock Conflicts with dba_lock and Column Formatting Purpose This Oracle SQL query is designed to investigate and understand lock conflicts within your database, particularly those causing performance bottlenecks. It leverages the dba_lock view to expose critical lock information in a …

Identifying Locked Rows in Oracle Database using tables v$session and dba_objects Purpose This Oracle query pinpoints the exact row a specific session is waiting on due to a lock. It first finds the locked object and row location, then constructs a ROWID to fetch and display the entire locked row from the table. Sample …

Oracle Database: Uncover Blocking Sessions with a Powerful SQL Query using v$lock Purpose Identify and resolve performance bottlenecks in your Oracle database by detecting blocking sessions using this powerful SQL query. Gain insights into the query's mechanics and learn how to optimize your database for smoother …