fact: Oracle Server - Enterprise Edition
fact: MS Windows 2000
fact: MS Windows NT
symptom: Cannot connect to SVRMGRL
symptom: ORA-12560: TNSrotocol adapter error
symptom: Cannot connect to SVRMGR30
symptom: ORA-12203: TNS:unable to connect to destination
cause: Bequeath protocol is not supported with Microsoft Terminal Server Client.
ORA-12203 is seen on Oracle 8.0.6.
ORA-12560 is seen on Oracle8i.
Connecting to SVRMGRL is done by using the BEQUEATH protocol which is not available using an MS Windows 2000 Terminal Server Client.
To startup the instance, use the the Windows 2000 console to connect to the SVRMGRL.
The reason for the ORA-12560 error is that when you are connected via a terminal client there is a virtual machine reated on the server. Therefore you are not connected to the server but to your "own" machine. This requires that you use a valid connect string to connect to the "remote" machine.
You should connect via a valid NET8 connect string.