This illustration shows an Oracle Streams replication environment with a capture database and three destination databases. These databases are:

• The capture database has a capture process and a queue. The capture process enqueues captured LCRs into the queue. Propagation A at the capture database propagates LCRs to a queue at destination database A. Propagation B at the capture database propagates LCRs to a queue at destination database B. Propagation C at the capture database propagates LCRs to a queue at destination database C.

• Destination database A contains a queue that accepts LCRs from propagation A. This database also contains an apply process that dequeues LCRs from the queue.

• Destination database B contains a queue that accepts LCRs from propagation B. This database also contains an apply process that dequeues LCRs from the queue.

• Destination database C contains a queue that accepts LCRs from propagation C. This database also contains an apply process that dequeues LCRs from the queue.

Destination database A is down and is not accepting LCRs from propagation A. These LCRs are building up in the queue at the capture database.