Viewing GUC Parameters

GaussDB(DWS) GUC parameters can control database system behaviors. You can check and adjust the GUC parameters based on your business scenario and data volume.

• After a cluster is installed, you can check database parameters on the GaussDB(DWS) management console.

  

• You can also connect to a cluster and run SQL commands to check the GUC parameters.
  • Run the SHOW command.
    

    Method 2 can only be used to check the GUC parameter values of CNs, while the GUC parameter values of DNs can be viewed through Method 1: by using the management console.

    To view a certain parameter, run the following command:

    1	SHOW server_version;

    server_version indicates the database version.

    Run the following command to view values of all parameters:

    1

    SHOW ALL;

  • Use the pg_settings view.
    To view a certain parameter, run the following command:

    1	SELECT * FROM pg_settings WHERE NAME='server_version';

    Run the following command to view values of all parameters:

    1	SELECT * FROM pg_settings;