|Range of values||0 to 1000|
|Real Application Clusters||Multiple instances can have different values.|
JOB_QUEUE_PROCESSES specifies the maximum number of processes that can be created for the execution of jobs. It specifies the number of job queue processes per instance (J000, ... J999). Replication uses job queues for data refreshes. Advanced queuing uses job queues for message propagation. You can create user job requests through the
Some job queue requests are created automatically. An example is refresh support for materialized views. If you wish to have your materialized views updated automatically, you must set
JOB_QUEUE_PROCESSES to a value of one or higher.
Oracle Streams Advanced Queuing User's Guide and Reference for more information on message propagation