pg_controldata

1 Application

pg_controldata

display server-wide control information

       pg_controldata
       datadir

## Description

`pg_controldata` returns 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 server-wide, and not specific to any one database.

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

## Environment

`PGDATA`

- Default data directory location