disabling the firewall would be my next step. On 10/09/2007, Dhimant Patel <drp4kri@xxxxxxxxx> wrote: > Hi All, > I have recently installed Oracle 11g Enterprise Ed. on redhat EL4, after > installing necessary patches. I have firewall enabled on this server. I also > have disabled SELinux security policy. I have 11g instance running and TNS > names configured. > > > Attempt to connect to this server fails with ORA-12560 errors. Here are > couple of tests done and their results. > 1> I could ping this server from other machines. > 2> I could ssh into this server. > 3> I could tnsping/connect from being on the same machine. > > 4> I could not tnsping/connect from any other machine, which includes > including wide variety of oracle software installed - from 8i to 10g. > 5> I could not even use Oracle instant client from any remote machine. > > What should be the next logical step in this scenario? > -Thanks, > DP. > -- Niall Litchfield Oracle DBA http://www.orawin.info -- //www.freelists.org/webpage/oracle-l