12th September 2019: PostgreSQL 12 Beta 4 Released!
Supported Versions: Current (11) / 10 / 9.6 / 9.5 / 9.4
Development Versions: 12 / devel
Unsupported versions: 9.3 / 9.2 / 9.1 / 9.0 / 8.4 / 8.3 / 8.2 / 8.1 / 8.0 / 7.4 / 7.3
This documentation is for an unsupported version of PostgreSQL.
You may want to view the same page for the current version, or one of the supported versions listed above instead.

pg_controldata

Name

pg_controldata -- display control information of a PostgreSQL database cluster

Synopsis

pg_controldata [datadir]

Description

pg_controldata prints information initialized during initdb, such as the catalog version and server locale. It also shows information about write-ahead logging and checkpoint processing. This information is cluster-wide, and not specific to any one database.

This utility may only be run by the user who initialized the cluster because it requires read access to the data directory. You can specify the data directory on the command line, or use the environment variable PGDATA.

Environment

PGDATA

Default data directory location