Select locktype,relation::regclass as rel,page||','||tuple as ctid,virtualxid as vxid,transactionid as xid,virtualtransaction as vxid2,pid,mode,granted
From pg_locks
Where pid=4282;
locktype | rel | ctid | vxid | xid | vxid2 | pid | mode | granted
---------------+--------+------+-------+------+-------+------+---------------+---------
relation | 178052 | | | | 7/110 | 4282 | RowShareLock | t
relation | 178046 | | | | 7/110 | 4282 | RowShareLock | t
virtualxid | | | 7/110 | | 7/110 | 4282 | ExclusiveLock | t
transactionid | | | | 1526 | 7/110 | 4282 | ExclusiveLock | t

relation::regclass as rel  ，应该把oid转成表名显示，不知道为啥没成功？