PLSExtProc is a special service for executing external procedures. Fom inside SQL or PL/SQL you can call an external procedure (the one that reside outside the database, that is at OS level), for example you can copy or delete a file or send an email etc. Those external procedures are usualy written in C and compiled into "object" code libraries (.so on UNIX, .dll on NT).
In the database you simply have to "register" this external library and create a PL/SQL function that calls the library.
Jurij Modic ASCII a stupid question, get a stupid ANSI
24 hours in a day .... 24 beer in a case .... coincidence?