↑↓ select ↵ open ⌫ change scope Open full search

PG.CENTER connects PostgreSQL documentation, reference, and ecosystem knowledge. Maintained by Pigsty.

Supported versions: Current (18) / 17 / 16 / 15 / 14
Development versions: 19 / devel
Unsupported versions: 13 / 12 / 11 / 10 / 9.6 / 9.5 / 9.4 / 9.3 / 9.2 / 9.1 / 9.0 / 8.4 / 8.3 / 8.2 / 8.1 / 8.0 / 7.4 / 7.3 / 7.2
Historical version. PostgreSQL 9.4 reached end of support in February 2020. See the current version for supported releases.
PostgreSQL 9.4.26 Documentation
Prev Up Next

Chapter 27. Monitoring Database Activity

Table of Contents
27.1. Standard Unix Tools
27.2. The Statistics Collector
27.2.1. Statistics Collection Configuration
27.2.2. Viewing Collected Statistics
27.2.3. Statistics Functions
27.3. Viewing Locks
27.4. Dynamic Tracing
27.4.1. Compiling for Dynamic Tracing
27.4.2. Built-in Probes
27.4.3. Using Probes
27.4.4. Defining New Probes

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 statistics collector, 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 command. Section 14.1 discusses EXPLAIN and other methods for understanding the behavior of an individual query.

Prev Home Next
Standby Server Settings Up Standard Unix Tools

Report a documentation issue

Read the upstream documentation. For corrections, first check the current version.