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Oracle® Database Reference
11g Release 2 (11.2)

E40402-10
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DBA_HIST_BUFFERED_SUBSCRIBERS

DBA_HIST_BUFFERED_SUBSCRIBERS displays historical information about the subscribers for all buffered queues in the instance.

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
QUEUE_SCHEMA VARCHAR2(30) NOT NULL Owner of the queue
QUEUE_NAME VARCHAR2(30) NOT NULL Name of the queue
SUBSCRIBER_ID NUMBER NOT NULL Internal subscriber number (for identification)
SUBSCRIBER_NAME VARCHAR2(30)   Name of the subscriber
SUBSCRIBER_ADDRESS VARCHAR2(1024)   Address of the subscribing agent
SUBSCRIBER_TYPE VARCHAR2(30)   Type of subscriber:
  • PROXY - Proxy subscriber

  • SUBSCRIBOR

STARTUP_TIME DATE NOT NULL Startup time of the instance
LAST_BROWSED_SEQFoot 1  NUMBER   Sequence number of the most recently browsed message for the subscriber (comparable to the number of messages in the V$STREAMS_APPLY_READER view)
LAST_BROWSED_NUMFootref 1 NUMBER   Internal Message number for the most recently browsed message for the subscriber
LAST_DEQUEUED_SEQFootref 1 NUMBER   Sequence number of the most recently dequeued message for the subscriber (comparable to the number of messages in the V$STREAMS_APPLY_COORDINATOR view)
LAST_DEQUEUED_NUMFootref 1 NUMBER   Internal Message number for the most recently dequeued message for the subscriber
CURRENT_ENQ_SEQFootref 1 NUMBER   Current sequence number of the most recently enqueued message for the subscriber
NUM_MSGS NUMBER   Total number of outstanding messages currently enqueued in the buffered queue for the subscriber (includes the count of the messages overflowed to disk)
CNUM_MSGS NUMBER   Cumulative total number of messages enqueued for the subscriber since the creation of the buffered queue
TOTAL_DEQUEUED_MSGFootref 1 NUMBER   Total number of messages dequeued by the subscriber
TOTAL_SPILLED_MSG NUMBER   Total number of spilled messages for the subscriber
EXPIRED_MSGSFootref 1 NUMBER   Number of expired messages
MESSAGE_LAGFootref 1 NUMBER   Message lag of the subscriber
ELAPSED_DEQUEUE_TIMEFootref 1 NUMBER   Total time spent in dequeue (in hundredths of a second)
DEQUEUE_CPU_TIMEFootref 1 NUMBER   Total CPU time for dequeue (in hundredths of a second)
LAST_DEQUEUE_TIMEFootref 1 TIMESTAMP(3)   Last message dequeue time
OLDEST_MSGIDFootref 1 RAW(16)   Message ID of the oldest message
OLDEST_MSG_ENQTMFootref 1 TIMESTAMP(3)   Enqueue time of the oldest message

Footnote 1 This column is available starting with Oracle Database 11g Release 2 (11.2.0.2).