SOA - Can we use single FIle/FTP adapter to poll multiple directory

Yes, we can poll from  multiple different directories using single file/ftp adapter. 

Following steps need to do:

Step1: In the File/FTP adapter configuration, Provide the physical or logical path using comma separator as below:

physical path:

directory for incoming files.

/tmp/fileAdapter/source1,/tmp/fileAdapter/source2

Step2: Keep the following property in your .jca file 

<property name="DirectorySeparator" value="," />

Now the file will be picked up from the multiple locations you gave....

Note: for each directory poll, it will create a separate instance in EM console.