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Oracle® Database Reference
12c Release 1 (12.1)

E17615-24
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V$LOCK_TYPE

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.
IS_RECYCLE VARCHAR2(3) Indicates whether the enqueue requires caching of the associated resource in the DLM's resource cache.

Possible values:

  • NO: Means the enqueue requires caching of the associated resource in the DLM's resource cache

  • YES: Means the enqueue does not require caching of the associated resource in the DLM's resource cache

DESCRIPTION VARCHAR2(4000) Explanation of how or for what purpose the enqueue is used.
CON_ID NUMBER The ID of the container to which the data pertains. Possible values include:
  • 0: This value is used for rows containing data that pertain to the entire CDB. This value is also used for rows in non-CDBs.

  • 1: This value is used for rows containing data that pertain to only the root

  • n: Where n is the applicable container ID for the rows containing data