Michael,
Intermedia communicates with the rest of Oracle via extproc, and extproc is only available via Net8 and an Oracle listener. Do you have Net8 configured? Below is a copy of my listener.ora file.
BTW there are lots of bugs in 8.1.6 Intermedia. You might consider upgrading to 8.1.7, though that is a non-trivial upgrade (it generally has taken me about a day, depending on the speed of the machine). If you do upgrade, don't try to do a automated database migration. The JRE will run out of RAM and Linux's OOM support will kill it off. You have to do it by hand.
# LISTENER.ORA Network Configuration File: /u01/app/oracle/product/8.1.7/network
/admin/listener.ora
# Generated by Oracle configuration tools.
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = myhost)(PORT = 1521))
)
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
)
)
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = /u01/app/oracle/product/8.1.7)
(PROGRAM = extproc)
)
(SID_DESC =
(GLOBAL_DBNAME = yourservicename)
(ORACLE_HOME = /u01/app/oracle/product/8.1.7)
(SID_NAME = orcl)
)
)
