Polling interval behavior

Some starter activities poll for a change in state at the specified polling interval. Once the poll occurs and the change of state is detected, an orchestration job is started to start processing.

For example, during run time, the FTP Poll Directory activity polls for the existence of the specified file or files on the FTP server at the specified location and polling interval.

You specify the polling interval for the starter activity in the Delivery Rules task of the Checklist for the activity. The polling interval determines how often a poll occurs to check for a change in state. Once an orchestration that starts with a polling starter activity is published and deployed, the first poll occurs when the orchestration is deployed and the second poll occurs at the next time interval in the polling schedule. For example, if the polling interval is 10 minutes and the orchestration is deployed at 10:14 PM, the first poll occurs at 10:14 PM and the second poll occurs at 10:20 PM, which is the next interval of 10 minutes, as shown in the following figure:

The intervals start at the beginning of the hour, 10:00 PM in this example.

Note: When specifying the polling interview in days, the Integration Appliance uses UTC time zone and not the local time zone to determine when to poll. When the Polling Interval is set to days in the Delivery Rules task, the Integration Appliance polls at the start of the day (00:00) using the UTC time zone and not the local time zone specified for the Integration Appliance. For example, if your Integration Appliance is set to Pacific Standard Time (PST) which is 8 hours behind Coordinated Universal Time (UTC) and the Polling Interval was set to 1 day, the poll occurs at  00:00 in the UTC time zone which is equivalent to 4:00 PM (16:00 in 24 hour time) in the PST time zone.

The following starter activities poll for a change in state:

  • Database Get Inserted Rows
  • Database Get Updated Rows
  • Database Get Deleted Rows
  • Database Poll Table
  • Get Email
  • FTP Poll Directory
  • MQ Poll Queue



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Timestamp icon Last updated: Wednesday, 15 June 2016


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