Let's say we are doing File Adapter Outbound Operation. When we configure the File adapter in our composite we give the directory and the file name.
we can still change these values at runtime based on our requirement i.e., dynamically. Go to the properties of the invoke activity which calls the File Adapter partner link.
Find the properties jca.file.Directory and jca.file.FileName. For these properties you can assign the values either through variables or through expressions.
And these values will be overwritten with the values what you give at the configuration of the file adapter.
What name do you want for the file? POOutputFile.xml
Oracle has given the option to use time stamp in the end so that no 2 files are ever same to avoid error while writing a file in the same directory.
I have not don't this before however if this is present in 11G then it must be possible in 10G too.