pg_parameter_acl
   The catalog pg_parameter_acl records configuration
   parameters for which privileges have been granted to one or more roles.
   No entry is made for parameters that have default privileges.
  
   Unlike most system catalogs, pg_parameter_acl
   is shared across all databases of a cluster: there is only one
   copy of pg_parameter_acl per cluster, not
   one per database.
  
Table 53.36. pg_parameter_acl Columns
| Column Type Description | 
|---|
| 
        Row identifier | 
| 
        The name of a configuration parameter for which privileges are granted | 
| 
        Access privileges; see Section 5.7 for details |