In addition to what Nani said you may also be able to run the executable "dbAccess" which is a non-graphical executable which contains core SKILL functions plus functions that could be run inside of a Pcell, these include db* prefix functions, dd* functions, rod* functions and tech* functions. No graphical capabilities exist at all within dbAccess, so functions like hi* or ge* will not work, and the application SKILL API's are not present either, so no sch* or le*. Having said this, it is a useful tool for performing core SKILL functionality or testing PCells to ensure that they would run in other environments (e.g. for Stream Out use). This executable is not officially documented yet, but this is coming soon.