Hi, given this simple example: postgres=# create table t ( a int ); CREATE TABLE postgres=# create index i on t(a); CREATE INDEX postgres=# select pg_relation_filepath('i'); pg_relation_filepath ---------------------- base/5/16388 (1 row) postgres=# \! oid2name --oid 16388 From database "postgres": Filenode Table Name ---------------------- 16388 i postgres=# postgres-# \! oid2name --table=i% From database "postgres": Filenode Table Name ---------------------- 16388 i postgres-# Is there a reason why the heading is called "Table Name" instead of "Relation Name"? The same is true for the parameters: postgres-# \! oid2name --help | grep -iw table -f, --filenode=FILENODE show info for table with given file node -o, --oid=OID show info for table with given OID -t, --table=TABLE show info for named table This works with indexes as well, not only tables. Regards Daniel