ESPs in Sybase are extended stored procs, usually written in C and executed via an external server (the XP server).

Java stored procs/functions are available inside of the dataserver as part of the JVM that is included in the dataserver itself.

I wrote a prototype that loaded a perl interpreter into the XP server and allowed the easy creation of RPCs written in perl, but it was rather clunky and the performance wasn't great...

Michael