pg_replication_origin   The pg_replication_origin catalog contains
   all replication origins created.  For more on replication origins
   see Chapter 49.
  
Table 51.43. pg_replication_origin Columns
| Name | Type | References | Description | 
|---|---|---|---|
| roident | Oid | A unique, cluster-wide identifier for the replication origin. Should never leave the system. | |
| roname | text | The external, user defined, name of a replication origin. |