System requirements
PL/SQL Developer will run on Windows 2000, XP, 2003, 2008, Vista, Windows 7 and Windows 8. The supported Oracle Server versions are 7.x, 8.x, 8i, 9i, 10g and 11g on any platform. To connect to an Oracle database, PL/SQL Developer requires a 32-bit SQL*Net, Net 8, Net 9, Net 10 or Net 11 version.