Upgrade to 11g - DBUA can't retrieve the version

Question

Hello,
I'm upgrading 10.2.0.4 version to 11.2.0.2 and I have problem at the beginning.
Immediately after the start of DBUA in the I get the error, that the version of the database can' be retrieved. Somewhere in the logs I have found:
connect /****** as SYSDBA
set echo off;
@/u01/app/oracle/OracleHomes/db11g/rdbms/admin/rdbmsup.sql;
exactly at this point I have big understanding problem.
It looks like the new software wants to connect to the instance and can't. What should I do to allow it to do that? I have started the new(11g) listener and it it possible to connect to the old 10g instance, but the old instance runs in the old home. I can connect to it, but I must use the tnsname "emrep". Without using the tnsname it connects to the idle instance.
SQL> conn / as sysdba
Connected to an idle instance.
SQL> conn sys@emrep as sysdba
Enter password:
Connected.
Probably I have made some mistake during configuration of the listener, but I can't find any guidance in this direction. At all places where I'm looking I see only: "create new listener using netca and add the database in the Database Services tab for this listener using netmgr". Actually there is no need to do the last because tha databse is using the default port 1521.
If I do only that, the I get in $ORACLE_HOME/networt/admin folder only listener.ora with the following contents:
# listener.ora Network Configuration File: /u01/app/oracle/OracleHomes/db11g/network/admin/listener.ora
# Generated by Oracle configuration tools.
LISTENER =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = mmredora.aegon-net.de)(PORT = 1521))
ADR_BASE_LISTENER = /u01/app/oracle
After that I see the databse registered with the listener:
[oracle@mmredora-SID:emrep]$ lsnrctl status
LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 27-SEP-2011 15:38:23
Copyright (c) 1991, 2009, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=mmredora.aegon-net.de)(PORT=1521)))
STATUS of the LISTENER
Alias LISTENER
Version TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date 27-SEP-2011 15:34:19
Uptime 0 days 0 hr. 4 min. 3 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /u01/app/oracle/OracleHomes/db11g/network/admin/listener.ora
Listener Log File /u01/app/oracle/diag/tnslsnr/mmredora/listener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=mmredora.aegon-net.de)(PORT=1521)))
Services Summary...
Service "emrep" has 1 instance(s).
Instance "emrep", status READY, has 1 handler(s) for this service...
The command completed successfully
Can somebody help me with that?

Answer 1

"could not get the database version from the "Oracle Server" component. The "CEP" file "/u01/app/oracle/OracleHomes/db11g/rdbms/admin/rdbmsup.sql" does not provide the version directive."
but I have found some other problem.
in rdbmsup.sql I found:
SELECT version INTO inst_version FROM v$instance;
vers := SUBSTR(inst_version,1,6); -- three digits
ptch_version := SUBSTR(inst_version,1,8); -- four digits (patch release)
IF (vers = '9.2.0' AND
SUBSTR(ptch_version,1,8) = '9.2.0.8') OR
(vers = '10.1.0' AND
SUBSTR(ptch_version,1,8) = '10.1.0.5') OR
(vers = '10.2.0' AND
SUBSTR(ptch_version,1,8) != '10.2.0.1') OR
(vers IN ('11.1.0','11.2.0')) THEN
NULL; -- is a supported version
ELSE
-- version is some unsupported version
DBMS_OUTPUT.PUT_LINE('ODMA_DIRECTIVE:EXIT:NOT_INSTALLED:');
RETURN;
END IF;
I have executed
SELECT version INTO inst_version FROM v$instance;
from sqlplus connecting to the old instance using a "tnsname" and get version 10.1.0.4, not "10.2.0.4" as it is in my papers. now I'm making upgrade to 10.1.0.5
But it still bothers me: this "connect /****** as SYSDBA"! The text of the message sounds like "not possible to retrieve the version at all" - not that it is an unsupported version.