Lock:
select * from v$lock;
select * from v$locked_object;
select * from v$lock_type;
Latch:
select * from v$latchholder;
select * from v$latch;
select * from v$latch_children;
select * from v$latchname;
Lock:
select * from v$lock;
select * from v$locked_object;
select * from v$lock_type;
Latch:
select * from v$latchholder;
select * from v$latch;
select * from v$latch_children;
select * from v$latchname;