4.317 DBA_HIST_ENQUEUE_STAT

DBA_HIST_ENQUEUE_STAT displays historical statistics on the number of enqueue (lock) requests for each type of lock.

This view contains snapshots of V$ENQUEUE_STATISTICS.

Column	Datatype	NULL	Description
SNAP_ID	NUMBER	NOT NULL	Unique snapshot ID
DBID	NUMBER	NOT NULL	Database ID for the snapshot
INSTANCE_NUMBER	NUMBER	NOT NULL	Instance number for the snapshot
EQ_TYPE	VARCHAR2(2)	NOT NULL	Type of enqueue requested
REQ_REASON	VARCHAR2(64)	NOT NULL	Reason for the enqueue request
TOTAL_REQ#	NUMBER		Total number of enqueue requests or enqueue conversions for this type of enqueue
TOTAL_WAIT#	NUMBER		Total number of times an enqueue request or conversion resulted in a wait
SUCC_REQ#	NUMBER		Number of times an enqueue request or conversion was granted
FAILED_REQ#	NUMBER		Number of times an enqueue request or conversion failed
CUM_WAIT_TIME	NUMBER		Total amount of time (in milliseconds) spent waiting for the enqueue or enqueue conversion
EVENT#	NUMBER		Event number
CON_DBID	NUMBER		The database ID of the PDB for the sampled session
CON_ID	NUMBER		The ID of the container that CON_DBID identifies. 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

See Also:

"V$ENQUEUE_STATISTICS"