qhb_controldata

qhb_controldata — display control information of a QHB database cluster

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Synopsis

qhb_controldata [option] [[ -D | --pgdata ]datadir]

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Description

qhb_controldata prints information initialized during qhb_bootstrap (or initdb), such as the catalog version. 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 can 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. This utility supports the options -V and --version, which print the qhb_controldata version and exit. It also supports options -? and --help, which output the supported arguments.

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Environment

PGDATA
Default data directory location

PG_COLOR
Specifies whether to use color in diagnostic messages. Possible values are always, auto and never.