If you are running InterformNG2 on the IBM i platform or if the InterformNG2 installation is connected to an IBM i, then you can use InterformNG2 to process spooled files. The workflow input type, From IBM i output queue (Stream) which is described here can used as a way to process very large spooled files without using too much memory.

For smaller spooled files you can consider the alternative workflow input types:

From IBM i output queue This monitors an output queue and loads (and holds) the complete spooled file.

From IBM i output queue (multiple) Similar to "From IBM i output queue" - except that this can monitor multiple output queues in one setup.

The concept of the component, From IBM i output queue (Stream) is to process the large input spooled file as individual pages or smaller documents. The smaller documents are normally identified by a document number or similar, where this document number might only be found on the first page of a document or in different positions/lines. 

The From IBM i output queue (Stream) component temporarily loads the complete spooled file, but for processing it loads only a single spooled file page at a time. The recommendation is to use this input type with one of the split spooled file components as the very first workflow component and the split components collect the pages for a matching key to keep a document together.

The implementation in the workflow and the parameters are  the same as for From IBM i output queue with the deviations mentioned above.