DBA_HIST_SERVICE_WAIT_CLASS

DBA_HIST_SERVICE_WAIT_CLASS displays the history of wait class information for services as tracked by the Workload Repository.

This view contains information from V$SERVICE_WAIT_CLASS.

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
SERVICE_NAME_HASH	NUMBER	NOT NULL	Hash of the service name
SERVICE_NAME	VARCHAR2(64)	NOT NULL	Name of the service
WAIT_CLASS_ID	NUMBER	NOT NULL	Identifier for the class of the wait event
WAIT_CLASS	VARCHAR2(64)		Name for the class of the wait event
TOTAL_WAITS	NUMBER		Total number of waits for this event
TIME_WAITED	NUMBER		Total amount of time waited for this event (in hundredths of a second)
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$SERVICE_WAIT_CLASS”