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Oracle Troubleshooting
ORA-01004: default username feature
not supported
Symptom:
When attempting to log in without
supplying a password (i.e. intending to use operating
system authentication) the following error is encountered:
ORA-01004: default username
feature not supported; logon denied
Possible Causes and Remedies:
Operating system authentication
has not been enabled for the system.
SQLNET.AUTHENTICATION_SERVICES
= (NTS)
If the registry key HKEY_LOCAL_MACHINE
\ SOFTWARE \ ORACLE \ OSAUTH_ENFORCE_STRICT
is set (true) then verify that the user is a
member of one of the following NT groups: ORA_<SID>_USER,
ORA_<SID>_DBA, ORA_<SID>_OPER,
ORA_USER, ORA_DBA or ORA_OPER.
If the Oracle database is in a
different domain from the logon domain then a
trust relationship must be set-up between the two
domains for operating system authentication to
work.
The system does not support
operating system authentication. The error may in
this case be accompanied by the error ORA-01988:
remote os login is not allowed. Log
on supplying password and username.
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