As such there is no wait option between processing each file during the polling cycle in the File/FTP adapter. Instead, you can use MaxRaiseSize property to define the number of files to be processed during the polling cycle. In this scenario you can set it to 1. Add the following entry in the adapter jca file. <property name="MaxRaiseSize" value="1"/>
The adapter will process only one file during each polling interval, so there is an equivalent delay between each instance. You can set the polling frequency to an optimal interval so that the inbound files are processed without much delay because of this.