Specifying the Delivery Rules parameters
is one of the tasks you must complete to configure a JMS activity.
For more information about the configuration tasks in
the Checklist, see the help topic for the specific
JMS activity.
Procedure
- In the Checklist,
select Delivery Rules. The Delivery
Rules panel opens.
- For the Poll Message activity
only, specify the polling interval. By default, the activity polls
for changes every second.
- Select Batch objects to
process the job as a batch.
- Select one of the following delivery
options.
Note: The delivery options available depend on
the JMS activity. Not all delivery options are available for every
JMS activity.
Delivery Option |
Description |
ATLEAST_ONCE |
A persistent mode, in which the JMS Provider insures that
a message is not lost. As a result, there are chances that the client
can receive multiple copies of a single message. |
ALMOST_ONCE |
In this non-persistent mode, a message may be lost, but JMS
does not deliver multiple copies of a message. |
EXACTLY_ONCE |
In this persistent mode, JMS delivers a message once and
only once. |