On Fri, Feb 13, 2009 at 2:16 PM, Branimir Petrovic <BranimirP@xxxxxxxx>wrote: > Jared, thanks for the pointer! > > As it turns out - if I rename sqlnet.ora file to _sqlnet.ora to make it > "dissapear" - the problem is gone and I can do "sqlplus '/ as sysdba'"!? > > With sqlnet.ora present (btw it was created by the 'netca'), it does not > matter if SLNET.AUTHENTICATION_SERVICES is NTS or NONE, ORA-01031 would > follow any attempt at '/ as sysdba'. > Setting it to NONE will also cause the error. It isn't necessary to rename the sqlnet.ora file, just remove the sqlnet.authentication_services line from the file. I just checked few of my other Linux (4) systems (32 and 64 bit) and none of > them had sqlnet.ora file (I installed these quite some time ago, and never > noticed that sqlnet.ora is not there from day 1), how strange... > Oracle will use the tnsnames.ora that is present even without sqlnet.ora. It will also use LDAP via OID autodiscovery without a sqlnet.ora file. That requires 10g+ and some setup by the network admin however. Jared Still Certifiable Oracle DBA and Part Time Perl Evangelist