PostgreSQL Configuration Information

PostgreSQL Configuration Information

Purpose Command
Show PostgreSQL version sudo -u postgres psql -c "SHOW server_version;"
Show Data Directory sudo -u postgres psql -c "SHOW data_directory;"
Show Listen Addresses  sudo -u postgres psql -c "SHOW listen_addresses;"
Show Ports sudo -u postgres psql -c "SHOW port;"
Show Max Connections sudo -u postgres psql -c "SHOW max_connections;"
Show Shared Buffer Size sudo -u postgres psql -c "SHOW shared_buffers;"
Show TimeZone sudo -u postgres psql -c "SHOW timezone;"
Show Maintenance Work Memory sudo -u postgres psql -c "SHOW maintenance_work_mem;"
Show Default Statistics Target sudo -u postgres psql -c "SHOW default_statistics_target;"


  1. Show PostgreSQL Version:

    • Purpose: Displays the version of the PostgreSQL server.
  1. Show Data Directory:

    • Purpose: Displays the location of the PostgreSQL data directory.
  1. Show Listen Addresses and Ports:

    • Purpose: Displays the configured listen addresses for incoming connections and the associated port number.
    • Commands:
  1. Show Max Connections:

    • Purpose: Displays the maximum number of concurrent connections allowed to the PostgreSQL server.
  1. Show Shared Buffer Size:

    • Purpose: Displays the size of shared memory buffers used by PostgreSQL for caching data.
  1. Show TimeZone:

    • Purpose: Displays the configured timezone for the PostgreSQL server.
  1. Show Maintenance Work Memory:

    • Purpose: Displays the amount of memory used for maintenance operations (e.g., VACUUM) in PostgreSQL.
  1. Show Default Statistics Target:

    • Purpose: Displays the default statistics target for table columns in PostgreSQL, which influences the level of detail in the query planner’s statistics.

These commands provide insights into various configuration parameters and server details in a PostgreSQL instance. You can use them to understand the current settings of your PostgreSQL server.

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