Connecting as sysdba returns ORA-01017: invalid username/password

Question

SQL Developer on my Win7 x64 Enterprise machine with Oracle 11gR2 Express was working fine until I tried to install the ODAC connectors so I could use Oracle as a data source for C# and VB in Visual Studio 2010.
The connection properties are:
Connection name "/ as sysdba"
Role "default"
Connection Type "basic"
OS Authentication checked
Hostname "localhost"
Port 1521
SID "orcl"
These are the same as when SQL Developer was working.
If I try to log on to SQL*Plus at the user-name prompt with "/ as sysdba", I get "insufficient privileges".
Where and what do I check to fix this?
Thanks.

Answer 1

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Where would I check for DOMAIN/USER entries?
select username, authentication_type from dba_users;With the prefix, there should be a database user e.g. "OPS$MYDOM\MYUSER" with external identification.
But with Connection type Basic, I assume you would not be able to connect anyway.
Try type TNS to see if that works or changes anything. (That is, if corresponding db user exists for OS authentication.)
Do you have a requirement to use OS authentication? Could you instead use a database user with a password, i.e. uncheck OS Authentication in SQL Developer?
The connections in SQL Developer are the Auto-Generated Local Connections:
/ as sysdbaI've found a few quirks in SQL Developer 3.0.04 with the auto-generated connection named "/ as sysdba". But right now I don't see that its relevant to this case.
Just create your own connection instead. If you need sysdba administrative connection, change Role in connection properties.
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By the way, the password for SYSMAN will expire in 5 days. How do I update the password?You should separate questions in separate threads and related forums, but lookup the ALTER USER command in the SQL Reference book.
Edited by: orafad on Dec 4, 2011 11:47 PM
Edit:
parenthesis about os auth part
Edited by: orafad on Dec 6, 2011 1:29 AM