8.21 V$AQ_IPC_MSG_STATS

V$AQ_IPC_MSG_STATS displays the statistics of each IPC message class, such as the total number of invocations of a message class, total pending message/processed message count, and last failure related data. Information like total processed message count, average pending time/average processing time gives a real-time outline of AQ IPC background state.

Column	Datatype	Description
MSG_CLASS_NAME	VARCHAR2(30)	Message class name
TOTAL_MSG_CALLS	NUMBER	Total number of calls for this message class
TOTAL_ACTIVE_MSGS	NUMBER	Total number of active messages presently processed by workers and primary
TOTAL_PENDING_MSGS	NUMBER	Total number of pending messages in the primary's local context
TOTAL_PROCESSED_MSGS	NUMBER	Total number of processed messages
LAST_RECEIVED_TIME	TIMESTAMP(3) WITH TIME ZONE	Time when the last message of this type was received in the primary's context list
LAST_PROCESS_TIME	TIMESTAMP(3) WITH TIME ZONE	Time when the last message was picked for processing
LAST_DONE_TIME	TIMESTAMP(3) WITH TIME ZONE	Time when the last message was done processing
AVERAGE_PENDING_TIME	NUMBER	Average pending time for this message class (in seconds)
AVERAGE_PROCESSING_TIME	NUMBER	Average processing time for this message class (in seconds)
LAST_FAILURE_TIME	TIMESTAMP(3) WITH TIME ZONE	Time of the last failure for this message class
LAST_ERROR_MSG	VARCHAR2(512)	Last error message for this message class
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