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Oracle® Database Reference
11g Release 2 (11.2)

Part Number E10820-02
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V$PROPAGATION_SENDER

V$PROPAGATION_SENDER displays information about buffer queue propagation schedules on the sending (source) side. The values are reset to zero when the database (or instance in a Real Application Clusters (RAC) environment) restarts, when propagation migrates to another instance, or when an unscheduled propagation is attempted.

Column Datatype Description
QUEUE_ID NUMBER Queue identifier of the queue
QUEUE_SCHEMA VARCHAR2(30) Schema of the queue
QUEUE_NAME VARCHAR2(30) Name of the queue
DST_QUEUE_SCHEMA VARCHAR2(30) Destination schema of the queue
DST_QUEUE_NAME VARCHAR2(30) Name of the destination queue
STARTUP_TIME DATE Time at which the propagation started
DBLINK VARCHAR2(128) Name of the destination database link
HIGH_WATER_MARK NUMBER High-watermark of the messages sent
ACKNOWLEDGEMENT NUMBER Acknowledgement of the messages received by the receiver
SCHEDULE_STATUS VARCHAR2(30) Status of the propagation schedule
TOTAL_MSGS NUMBER Total messages propagated
TOTAL_BYTES NUMBER Total bytes propagated
ELAPSED_DEQUEUE_TIME NUMBER Elapsed dequeue time (in hundredths of a second)
ELAPSED_PICKLE_TIME NUMBER Elapsed pickle time (time taken to linearize a logical change record (LCR) into a stream of bytes that can be sent over the network) (in hundredths of a second)
ELAPSED_PROPAGATION_TIME NUMBER Elapsed propagation time (in hundredths of a second)
ELAPSED_RULE_TIME NUMBER Elapsed rule time (in hundredths of a second)
MAX_NUM_PER_WIN NUMBER Maximum bytes per window
MAX_SIZE NUMBER Maximum bytes sent per window
LAST_MSG_LATENCY NUMBER Last propagated message latency
LAST_MSG_ENQUEUE_TIME TIMESTAMP(6) Last propagated message enqueue time
LAST_MSG_PROPAGATION_TIME TIMESTAMP(6) Last time when the message was propagated
LAST_LCR_LATENCY NUMBER Last propagated LCR latency
LAST_LCR_CREATION_TIME DATE Last propagated LCR timestamp
LAST_LCR_PROPAGATION_TIME DATE Last time when the LCR was propagated
DST_DATABASE_NAME VARCHAR2(128) Global name of the destination database
SESSION_ID NUMBER Session ID of the propagation sender process
SERIAL# NUMBER Serial number of the propagation sender process
SPID VARCHAR2(24) Process identification number of the propagation sender process
PROPAGATION_NAME VARCHAR2(30) Name of the Streams propagation
STATE VARCHAR2(53) State of the propagation sender process:
  • Initializing

  • Initializing propagation receiver

  • Browsing LCRs

  • Evaluating rules

  • Dequeueing LCRs

  • Sending LCRs

  • Waiting for apply to be enabled

  • Waiting for apply database to start

  • Waiting for propagation to be enabled

  • Waiting for capture to terminate

  • Waiting for a subscriber to be added

  • Suspended due to a dropped subscriber

  • Suspended for auto split/merge

  • Waiting on empty queue

When the SCHEDULE_STATUS column is not SCHEDULE OPTIMIZED, the state is the value of the SCHEDULE_STATUS column.