Oracle Database Discussions

Hi everybody,

Could you please help me with this problem? I'm trying to configure Oracle XE 11g for external procedures, this because I have to access some procedures in a DLL made in Delphi 6.0, but even with the simplest of the dll I make, like a sum made in C, I can't get pass this error ORA-28575: unable to open RPC connection to external procedure agent.

This is my listener.ora:

SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = C:\oraclexe\app\oracle\product\11.2.0\server)
(PROGRAM = extproc)
)
(SID_DESC =
(SID_NAME = CLRExtProc)
(ORACLE_HOME = C:\oraclexe\app\oracle\product\11.2.0\server)
(PROGRAM = extproc)
)
)

LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC0))
(ADDRESS = (PROTOCOL = TCP)(HOST = myPC)(PORT = 1521))
)
)


DEFAULT_SERVICE_LISTENER = (XE)

and this is my tnsnames.ora:
XE =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = myPC)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = XE)
)
)

EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC0))
(CONNECT_DATA =
(SID = PLSExtProc)
(PRESENTATION = RO)
)
)

ORACLR_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
)
(CONNECT_DATA =
(SID = CLRExtProc)
(PRESENTATION = RO)
)
)

Do you know what could be wrong? I'm out of ideas and google search...

Also, is there any difference in a calling for a DLL made on VB and one made in Delphi??

Thanks and Regards,