53.16. pg_db_role_setting
 The catalog pg_db_role_setting records the default values that have been set for run-time configuration variables, for each role and database combination. 
 Unlike most system catalogs, pg_db_role_setting is shared across all databases of a cluster: there is only one copy of pg_db_role_setting per cluster, not one per database. 
Table 53.16. pg_db_role_setting Columns
| Name | Type | References | Description | 
|---|---|---|---|
| setdatabase | oid |  | The OID of the database the setting is applicable to, or zero if not database-specific | 
| setrole | oid |  | The OID of the role the setting is applicable to, or zero if not role-specific | 
| setconfig | text[] | Defaults for run-time configuration variables |