sp_familylock displays the locks held by a family. This examples shows that the coordinating process (fid 51, spid 51) holds a shared intent lock on each of four tables and a worker process holds a shared page lock:
sp_familylock 51
fid spid loid locktype table_id page row dbname context --- ---- ---- ---------------- ---------- ----- --- -------- ---------------- 51 23 102 Sh_page 208003772 945 0 sales 51 51 102 Sh_intent 16003088 0 0 sales Fam dur 51 51 102 Sh_intent 48003202 0 0 sales Fam dur 51 51 102 Sh_intent 176003658 0 0 sales Fam dur 51 51 102 Sh_intent 208003772 0 0 sales Fam dur
You can also specify two IDs for sp_familylock.