Running a Workflow

The View Event Log enables you to view the progress of running of a workflow. You can also view the time taken for workflow creation.

Oracle Data Miner uses Oracle Scheduler to schedule running of workflows. For an overview of Oracle Scheduler, see the Oracle Database Administrator's Guide.

Model builds can be very resource-intensive. The MAX_NUM_THREADS parameter in the Oracle Data Miner server controls the number of parallel builds. MAX_NUM_THREADS specifies the maximum number of model builds across all workflows running in the server.

Default Value=10. Therefore, by default, 10 models can occur concurrently across all workflows. There is the MAX_NUM_THREADS parameter in the repository table ODMRSYS. ODMR$REPOSITORY_PROPERTIES, where you can specify the value.

If you increase the value of MAX_NUM_THREADS, do it gradually. Workflows can appear to be running even though the network connection is lost.

To control the parallel model build behavior, the following parameters are used:

• THREAD_WAIT_TIME. The default is 5. When MAX_NUM_THREADS is reached, further Build process will be put on queue until parallel model build count < MAX_NUM_THREADS. This setting (in seconds) determines how often to check for parallel model build count.

• MAX_THREAD_WAIT. The default is NULL. The timeout (in seconds) for Build process that has been put on queue. If NULL, no timeout will occur.