SQL*Net V2 listener problem

Hi,

I am trying to set up the ORACLE7 (V7.0.9.3.1) Developer's Release in a SunOS 4.1.1 client/server configuration, using SQL*Net V2.

Everything works fine if I connect the V7 client (SQL*Plus) to the V7 RDBMS with SQL*Net V1, i.e. it seems like the RDBMS itself runs okay and I don't have any communication problems.

But when I try to start an SQL*Net V2 listener, I get the following error:

 TNS-01153: Failed to register SID "proto": check trace file for port  specific problems.

The trace file does not contain any additional information, as the message suggest.

The SID is "proto" on a server named "sqlnet". My /etc/listener.ora file (on the server) looks like this:

  TNSSTOP=yes
  STOP_LISTENER=YES
  TRACE_LEVEL_LISTENER=ON
  listener = (ADDRESS=(PROTOCOL=tcp)(HOST=sqlnet)(PORT=1600))   proto = (SID=(ORACLE_HOME=/export/home2/oracle7))

and the /etc/tnsnames.ora (on both the server and client) looks like this:

  v7_proto = (DESCRIPTION=

(ADDRESS=(PROTOCOL=tcp)(PORT=1600)(HOST=sqlnet))
(CONNECT_DATA=(SID=proto))
             )

What am I missing? Any hints would be very much appreciated.

---
Hans

-----
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