I've setup APEX 4.2.4 on 11G R2 using the Embedded PL/SQL Gateway. Its all working well.
Is it possible to use PDF printing with this configuration?
You need a middle tier to use the Apache FOP
PDF Printing in Application Express 3.1 and above
but there are other options, amongst many others:
Generating a PDF-document with some plsql: as_pdf_mini =&gt; as_pdf3
Opal-Consulting - Free tools - Home
This might also work https://sourceforge.net/projects/pljrxml2pdf/