V$LOCK_TYPE describes the type of locks available.
| Column | Datatype | Description | 
|---|---|---|
TYPE | 
VARCHAR2(64) | 
A two-letter internal resource identifier | 
NAME | 
VARCHAR2(64) | 
Resource type name. This is a short (less than 32 characters) enqueue type name. | 
ID1_TAG | 
VARCHAR2(64) | 
Description of the enqueue type. | 
ID2_TAG | 
VARCHAR2(64) | 
Further description of the enqueue type. | 
IS_USER | 
VARCHAR2(3) | 
User enqueue. These are enqueues that are acquired as a direct result of a SQL statement. Applications may get deadlocks on these enqueues. Such deadlocks are considered application errors. | 
DESCRIPTION | 
VARCHAR2(4000) | 
Explanation of how or for what purpose the enqueue is used. |