GV$GLOBAL_BLOCKED_LOCKS definition in Oracle Database 11.2
GV$GLOBAL_BLOCKED_LOCKS
select
USERENV('instance'), -- INST_ID NUMBER
addr, -- ADDR RAW(8)
kaddr, -- KADDR RAW(8)
sid, -- SID NUMBER
type, -- TYPE VARCHAR2(2)
id1, -- ID1 NUMBER
id2, -- ID2 NUMBER
lmode, -- LMODE NUMBER
request, -- REQUEST NUMBER
ctime -- CTIME NUMBER
from
v$lock l
where
exists (
select
*
from
v$dlm_locks d
where
substr(d.resource_name2,1,instr(d.resource_name2, ',',1,1)-1) = id1 and substr(d.resource_name2,instr(d.resource_name2,',',1,1)+1, instr(d.resource_name2 , ',',1,2)-instr(d.resource_name2, ',',1,1)-1) = id2 and substr(d.resource_name2,instr(d.resource_name2, ',',-1,1)+1,2) = type)