> For the complete documentation index, see [llms.txt](https://docs.postgresql.tw/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.postgresql.tw/server-administration/monitoring.md). # Chapter 27. Monitoring Database Activity **Table of Contents** [27.1. Standard Unix Tools](/server-administration/monitoring/monitoring-ps.md) [27.2. The Cumulative Statistics System](/server-administration/monitoring/monitoring-stats.md) : [27.2.1. Statistics Collection Configuration](/server-administration/monitoring/monitoring-stats.md#MONITORING-STATS-SETUP) ``` [27.2.2. Viewing Statistics](monitoring-stats.md#MONITORING-STATS-VIEWS) [27.2.3. `pg_stat_activity`](monitoring-stats.md#MONITORING-PG-STAT-ACTIVITY-VIEW) [27.2.4. `pg_stat_replication`](monitoring-stats.md#MONITORING-PG-STAT-REPLICATION-VIEW) [27.2.5. `pg_stat_replication_slots`](monitoring-stats.md#MONITORING-PG-STAT-REPLICATION-SLOTS-VIEW) [27.2.6. `pg_stat_wal_receiver`](monitoring-stats.md#MONITORING-PG-STAT-WAL-RECEIVER-VIEW) [27.2.7. `pg_stat_recovery_prefetch`](monitoring-stats.md#MONITORING-PG-STAT-RECOVERY-PREFETCH) [27.2.8. `pg_stat_subscription`](monitoring-stats.md#MONITORING-PG-STAT-SUBSCRIPTION) [27.2.9. `pg_stat_subscription_stats`](monitoring-stats.md#MONITORING-PG-STAT-SUBSCRIPTION-STATS) [27.2.10. `pg_stat_ssl`](monitoring-stats.md#MONITORING-PG-STAT-SSL-VIEW) [27.2.11. `pg_stat_gssapi`](monitoring-stats.md#MONITORING-PG-STAT-GSSAPI-VIEW) [27.2.12. `pg_stat_archiver`](monitoring-stats.md#MONITORING-PG-STAT-ARCHIVER-VIEW) [27.2.13. `pg_stat_io`](monitoring-stats.md#MONITORING-PG-STAT-IO-VIEW) [27.2.14. `pg_stat_bgwriter`](monitoring-stats.md#MONITORING-PG-STAT-BGWRITER-VIEW) [27.2.15. `pg_stat_checkpointer`](monitoring-stats.md#MONITORING-PG-STAT-CHECKPOINTER-VIEW) [27.2.16. `pg_stat_wal`](monitoring-stats.md#MONITORING-PG-STAT-WAL-VIEW) [27.2.17. `pg_stat_database`](monitoring-stats.md#MONITORING-PG-STAT-DATABASE-VIEW) [27.2.18. `pg_stat_database_conflicts`](monitoring-stats.md#MONITORING-PG-STAT-DATABASE-CONFLICTS-VIEW) [27.2.19. `pg_stat_all_tables`](monitoring-stats.md#MONITORING-PG-STAT-ALL-TABLES-VIEW) [27.2.20. `pg_stat_all_indexes`](monitoring-stats.md#MONITORING-PG-STAT-ALL-INDEXES-VIEW) [27.2.21. `pg_statio_all_tables`](monitoring-stats.md#MONITORING-PG-STATIO-ALL-TABLES-VIEW) [27.2.22. `pg_statio_all_indexes`](monitoring-stats.md#MONITORING-PG-STATIO-ALL-INDEXES-VIEW) [27.2.23. `pg_statio_all_sequences`](monitoring-stats.md#MONITORING-PG-STATIO-ALL-SEQUENCES-VIEW) [27.2.24. `pg_stat_user_functions`](monitoring-stats.md#MONITORING-PG-STAT-USER-FUNCTIONS-VIEW) [27.2.25. `pg_stat_slru`](monitoring-stats.md#MONITORING-PG-STAT-SLRU-VIEW) [27.2.26. Statistics Functions](monitoring-stats.md#MONITORING-STATS-FUNCTIONS) ``` [27.3. Viewing Locks](/server-administration/monitoring/monitoring-locks.md) [27.4. Progress Reporting](/server-administration/monitoring/progress-reporting.md) : [27.4.1. ANALYZE Progress Reporting](/server-administration/monitoring/progress-reporting.md#ANALYZE-PROGRESS-REPORTING) ``` [27.4.2. CLUSTER Progress Reporting](progress-reporting.md#CLUSTER-PROGRESS-REPORTING) [27.4.3. COPY Progress Reporting](progress-reporting.md#COPY-PROGRESS-REPORTING) [27.4.4. CREATE INDEX Progress Reporting](progress-reporting.md#CREATE-INDEX-PROGRESS-REPORTING) [27.4.5. VACUUM Progress Reporting](progress-reporting.md#VACUUM-PROGRESS-REPORTING) [27.4.6. Base Backup Progress Reporting](progress-reporting.md#BASEBACKUP-PROGRESS-REPORTING) ``` [27.5. Dynamic Tracing](/server-administration/monitoring/dynamic-trace.md) : [27.5.1. Compiling for Dynamic Tracing](/server-administration/monitoring/dynamic-trace.md#COMPILING-FOR-TRACE) ``` [27.5.2. Built-in Probes](dynamic-trace.md#TRACE-POINTS) [27.5.3. Using Probes](dynamic-trace.md#USING-TRACE-POINTS) [27.5.4. Defining New Probes](dynamic-trace.md#DEFINING-TRACE-POINTS) ``` [27.6. Monitoring Disk Usage](/server-administration/monitoring/diskusage.md) : [27.6.1. Determining Disk Usage](/server-administration/monitoring/diskusage.md#DISK-USAGE) ``` [27.6.2. Disk Full Failure](diskusage.md#DISK-FULL) ``` A database administrator frequently wonders, “What is the system doing right now?” This chapter discusses how to find that out. Several tools are available for monitoring database activity and analyzing performance. Most of this chapter is devoted to describing PostgreSQL's cumulative statistics system, but one should not neglect regular Unix monitoring programs such as `ps`, `top`, `iostat`, and `vmstat`. Also, once one has identified a poorly-performing query, further investigation might be needed using PostgreSQL's [`EXPLAIN`](/reference/sql-commands/sql-explain.md) command. [Section 14.1](/the-sql-language/performance-tips/using-explain.md) discusses `EXPLAIN` and other methods for understanding the behavior of an individual query. *** 原文：[PostgreSQL 18.6 Documentation](https://www.postgresql.org/docs/18/monitoring.html)（英文原文，待翻譯） --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. 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