V$QMON_COORDINATOR

8.144 V$QMON_COORDINATOR_STATS

V$QMON_COORDINATOR_STATS displays statistics of the non-sharded queue master process. There is one row per instance. The rows are deleted when the database (or instance in an Oracle RAC environment) restarts.

Column	Datatype	Description
`QMNC_PID`	`VARCHAR2(24)`	Non-sharded queue master process ID
`STATUS`	`VARCHAR2(24)`	Current status of the coordinator: `DEAD` `INITIALIZING` `RUNNING TASK COORDINATOR` `WAITING` `ADDING SERVER`
`NUM_SERVERS`	`NUMBER`	Number of QMON servers currently running
`LAST_SERVER_START_TIME`	`TIMESTAMP(3) WITH TIME ZONE`	Last server startup time
`LAST_SERVER_PID`	`VARCHAR2(24)`	Process ID of the last server process (Qnnn) created
`NEXT_WAKEUP_TIME`	`TIMESTAMP(3) WITH TIME ZONE`	Next wakeup time of the coordinator
`NEXT_READY_TIME`	`TIMESTAMP(3) WITH TIME ZONE`	Ready time of the first delayed task
`NEXT_EXPIRY_TIME`	`TIMESTAMP(3) WITH TIME ZONE`	Expiry time of the next ready task
`LAST_WAIT_TIME`	`TIMESTAMP(3) WITH TIME ZONE`	Time when the coordinator went to sleep
`LAST_FAILURE`	`VARCHAR2(32)`	Last failure encountered
`LAST_FAILURE_TIME`	`TIMESTAMP(3) WITH TIME ZONE`	Last failure time
`MAX_TASK_LATENCY`	`VARCHAR2(40)`	Maximum task latency across all the servers (in seconds)
`MIN_TASK_LATENCY`	`VARCHAR2(40)`	Minimum task latency across all the servers (in seconds)
`TOTAL_TASK_LATENCY`	`NUMBER`	Cumulative latency across all the tasks (in seconds)
`TOTAL_TASKS_EXECUTED`	`NUMBER`	Cumulative number of tasks serviced by all the servers
`MAX_SERVERS`	`NUMBER`	Maximum number of servers present at any point of time
`CON_ID`	`NUMBER`	The ID of the container to which the data pertains. The `CON_ID` value in this view is always 0. The rows pertain to the entire CDB or to the non-CDB.