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Oracle® Database Reference
11g Release 2 (11.2)

E40402-12
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V$LOCKED_OBJECT

V$LOCKED_OBJECT lists all locks acquired by every transaction on the system. It shows which sessions are holding DML locks (that is, TM-type enqueues) on what objects and in what mode.

Column Datatype Description
XIDUSN NUMBER Undo segment number
XIDSLOT NUMBER Slot number
XIDSQN NUMBER Sequence number
OBJECT_ID NUMBER Object ID being locked
SESSION_ID NUMBER Session ID
ORACLE_USERNAME VARCHAR2(30) Oracle user name
OS_USER_NAME VARCHAR2(30) OS user name
PROCESS VARCHAR2(12) OS process ID
LOCKED_MODE NUMBER Lock mode