If I have two databases on the same server, how do I connect / as sysdba in SQL*Plus?
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C:\>set ORACLE_SID=SIL

C:\>SQLPLUS /NOLOG

SQL*Plus: Release 8.1.7.0.0 - Production on Mon Apr 14 20:34:24 2003

(c) Copyright 2000 Oracle Corporation. All rights reserved.

SQL> CONNECT / AS SYSDBA
ERROR:
ORA-12560: TNSrotocol adapter error
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I know I can do CONNECT INTERNAL@SIL just fine but what's the equivalent in CONNECT / AS SYSDBA?

Thanks,