Performance-Tuning

Kill Idle PostgreSQL Sessions with SQL These PostgreSQL scripts terminate idle sessions that have been inactive for more than 15 minutes. Two variants are provided: one that targets idle sessions across all databases on the server, and one scoped to only the currently connected database. Purpose and Overview Idle and …

PostgreSQL Query Planning Settings Query Guide This PostgreSQL query retrieves all query tuning and statistics collection settings from the pg_settings system view. These parameters control how the query planner selects execution strategies, estimates costs, and collects runtime statistics. Purpose and Overview The …

PostgreSQL Resource Settings Query Guide This PostgreSQL query retrieves all resource usage configuration settings from the pg_settings system view. Resource settings control how PostgreSQL allocates memory, disk, and CPU resources across queries, background processes, and maintenance operations. Purpose and Overview …

List PostgreSQL Tables by Size with SQL This PostgreSQL query lists all tables in the current database sorted by their total size, largest first. It uses pg_total_relation_size() to include the table data, indexes, TOAST storage, and free space map in the size calculation. Purpose and Overview Disk space pressure is a …

PostgreSQL Table Row Count Estimates with SQL This PostgreSQL query returns estimated row counts for all user tables, sorted by the largest tables first. It reads from the statistics collector rather than scanning the tables, making it near-instant even on tables with billions of rows. Purpose and Overview Counting …

PostgreSQL Memory Settings Query: Monitor Database Memory Configuration This PostgreSQL query helps database administrators monitor and analyze memory-related configuration settings in their database instance. By querying the pg_settings system catalog view, you can quickly identify current memory parameters, their …

PostgreSQL Logging Configuration Query - Monitor Database Settings This PostgreSQL query provides database administrators with essential insights into logging configuration parameters by querying the pg_settings system view. The query specifically targets logging-related settings while filtering out WAL (Write-Ahead …

PostgreSQL Lock Management Settings Query Guide accessing system table pg_settings PostgreSQL's lock management system is crucial for maintaining data consistency and preventing conflicts in concurrent database operations. This guide demonstrates how to query and analyze lock-related configuration settings using the …

PostgreSQL Client Connection Settings: Complete Guide to pg_settings Query This PostgreSQL query provides a comprehensive view of client connection default settings by querying the pg_settings system view, allowing database administrators to analyze and understand configuration parameters that affect client behavior. …

PostgreSQL Autovacuum Settings Query: Complete Guide to pg_settings Analysis This PostgreSQL query provides database administrators with essential insights into autovacuum configuration parameters by querying the pg_settings system view. Understanding these settings is crucial for optimal database performance and …