DBA_LOCK_INTERNAL displays a row for each lock or latch that is being held, and one row for each outstanding request for a lock or latch.
| Column | Datatype | NULL | Description | 
|---|---|---|---|
SESSION_ID | 
NUMBER | 
Session holding or acquiring the lock | |
LOCK_TYPE | 
VARCHAR2(56) | 
Lock type
 See Also: For a listing of lock types, see Appendix D, "Oracle Enqueue Names"  | 
|
MODE HELD | 
VARCHAR2(40) | 
Lock mode | |
MODE REQUESTED | 
VARCHAR2(40) | 
Lock mode requested | |
LOCK_ID1 | 
VARCHAR2(1130) | 
Type-specific lock identifier, part 1 | |
LOCK_ID2 | 
VARCHAR2(40) | 
Type-specific lock identifier, part 2 |