Search notes:
ORA-12560: TNS:protocol adapter error
A probable cause for this error is that the
listener
is running, but cannot connect to an
instance
, but compare with
ORA-12518: TNS:listener could not hand off client connection
.
On Windows, such an instance might be started up with
oradim
-startup -sid <sid>
See also
Oracle Net error messages
and
Other Oracle error messages
Index