A late reaction on your question. Accidentally I stumbled on the following link:
titled: Migrating WebSphere Applications to z/OS
Hope this helps
On second thought I remember the following options:
If your data on the mainframe is stored in a database, you might consider accessing that database remotely with a JDBC implementation for that database.
If the data is not in a database, but in some flat file(s), you may consider exploring the FTP implementation on your mainframe. On z/OS, FTP has some nice features.
1) you can submit an SQL query and get the data back (for data in a database)
2) you can ask for a filename that represents JCL for a batch job. Instead of returning the JCL contents, FTP will execute the JCL and return the job output.
Probably, you may have to write your own FTP client to use these features, or extend some existing implementation, because these z/OS FTP commands are rarely implemented in ordinary clients.
Since it is a long time ago that I used these FTP features (and currently I have no access to a mainframe) I cannot be more specific, but hope it helps.
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