Disabling a schema

What exactly happens when you disable a schema. I could not find any documentation explaining this. I execute the following:

DECLARE

 PRAGMA AUTONOMOUS_TRANSACTION;

BEGIN

  ORDS.ENABLE_SCHEMA(p_enabled => FALSE,

            p_schema => 'SCHEMANAME',

            p_url_mapping_type => 'BASE_PATH',

            p_url_mapping_pattern => 'sn',

            p_auto_rest_auth => TRUE);

  commit;

END;

/

Then I login with schemaname and everything is fine. I can go in and all my API's work.

What does the above do exactly?