On Wed, Jan 14, 2009 at 11:03 AM, QuijadaReina, Julio C < QuijadJC@xxxxxxxxxxxxxxx> wrote: > Hello, > > Has anyone run into issues with the listener not starting when sqlnet.ora > includes tcp node checking? It appears that the problem is a computer name > that is not resolvable through DNS - or that it just happens to be turned > off at the time. I am using this setting as part of a security strategy to > only allow certain clients direct access to the database servers. > > If you're concerned enough to use tcp node checking, you should probably consider using IP addresses rather than server names. Jared Still Certifiable Oracle DBA and Part Time Perl Evangelist