Oracle service with two instances

I have for some reason (maybe related to my experimenting with rman?) found myself with two instances running from the same service. I cannot conect now, as I get the ORA- 12560 TNS protocol adapter error.
I checked lsnrctl and see this:
Services Summary...
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "dan.doad" has 2 instance(s).
Instance "dan", status UNKNOWN, has 1 handler(s) for this service...
Instance "dan", status READY, has 1 handler(s) for this service...
Service "danXDB.doral" has 1 instance(s).
Instance "dan", status READY, has 1 handler(s) for this service...
IS this a reason why I am getting the error?
I am 9.2. I have checked tnsnames.ora, I have stopped and restarted services.
Thanks.

Dan, the first list of the listener status is fine.
Does the target db have a password file configured? If not, you cannot connect as using sysdba remotely.
The first connect is just a normal connection as user system who normally has the DBA role and is different from signing on like sqlplus "system as sysdba"
HTH -- Mark D Powell --

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