1. Database Reference
  2. Dynamic Performance Views
  3. Dynamic Performance (V$) Views: V$ACCESS to V$HVMASTER_INFO
  4. V$BUFFERED_PUBLISHERS

7.116 V$BUFFERED_PUBLISHERS

V$BUFFERED_PUBLISHERS displays information about all buffered publishers in the instance.

There is one row per queue per sender. The values are reset to zero when the database (or instance in an Oracle RAC environment) restarts.

Column Datatype Description

QUEUE_ID

NUMBER

Identifier for the queue

QUEUE_SCHEMA

VARCHAR2(128)

Owner of the queue

QUEUE_NAME

VARCHAR2(128)

Name of the queue

SENDER_NAME

VARCHAR2(128)

Name of the agent enqueuing the message (the Streams name assigned for a capture process)

SENDER_ADDRESS

VARCHAR2(1024)

Queue name and database name of the source (last propagating) queue; database name is not specified if the source queue is in the local database

SENDER_PROTOCOL

NUMBER

Protocol used by the sender's address

NUM_MSGS

NUMBER

Current number of messages that have yet to be dequeued from the buffer queue

CNUM_MSGS

NUMBER

Cumulative total number of messages enqueued into the buffered queue since the database last started (comparable to V$STREAMS_CAPTURE.TOTAL_ENQUEUED_MESSAGES)

LAST_ENQUEUED_MSG

NUMBER

Most recently enqueued message identifier

UNBROWSED_MSGS

NUMBER

Number of messages that have been enqueued but not browsed

OVERSPILLED_MSGS

NUMBER

Number of messages that have been spilled but not browsed

MEMORY_USAGE

NUMBER

Percentage of the Streams pool that is being used (or 0 if there is no Streams pool)

ELAPSED_ENQUEUE_TIME

NUMBER

Total time spent in enqueue (in hundredths of a second)

ENQUEUE_CPU_TIME

NUMBER

Total CPU time for enqueue (in hundredths of a second)

LAST_ENQUEUE_TIME

TIMESTAMP(3) WITH TIME ZONE

Last message enqueue time

PUBLISHER_STATE

VARCHAR2(59)

State of the publisher:

  • IN FLOW CONTROL: TOO MANY UNBROWSED MESSAGES

  • IN FLOW CONTROL: OVERSPILLED MESSAGES

  • IN FLOW CONTROL: INSUFFICIENT MEMORY AND UNBROWSED MESSAGES

  • PUBLISHING MESSAGES - Normal

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