## 51.63. `pg_user_mapping`

The catalog `pg_user_mapping` stores the mappings from local user to remote. Access to this catalog is restricted from normal users, use the view `pg_user_mappings` instead.

Table 51.64. `pg_user_mapping` Columns

Column Type Description
`oid` `oid` Row identifier
`umuser` `oid` (references `pg_authid`.`oid`) OID of the local role being mapped, 0 if the user mapping is public
`umserver` `oid` (references `pg_foreign_server`.`oid`) The OID of the foreign server that contains this mapping
`umoptions` `text[]` User mapping specific options, as “keyword=value” strings