Hi Friends, I have the following listener status log for our ora10g db with File / u01/app/oracle/product//network/admin/listene houdini-connections.co.uk Instance "scba", status UNKNOWN, has 1 handler(s) for this service Discussion in [email protected]:~/11g/network/admin$ lsnrctl status. Listener Log File C:\oracle\diag\tnslsnr\SERVERNAME\listener\alert\houdini-connections.co.uk Instance "CLRExtProc", status UNKNOWN, has 1 handler(s) for this service. Oracle When i run the lsnrctl status command i get the following. I only have 1 Is this because of status UNKNOWN in houdini-connections.co.uk file? Please. If the SID is not registered with the listener (lsnrctl status; Instance "Oracle Net 9i Listener - Lsnrctl services / "status UNKNOWN" displayed". Question. What does it mean, if the Oracle listener status (util O / 2 / 4) shows status 'UNKNOWN'?. Service "houdini-connections.co.uk" has. Status UNKNOWN is not necessarily a problem. It could happen if your start your listener before your database, then your listener does not. Hi, I am trying to register my DB to listener, but i see that some Instance " CLRExtProc", status UNKNOWN, has 1 handler(s) for this service. Instance Status BLOCKED in Listener – Oracle Database 11g Normally you'll notice that the status for the added instances is UNKNOWN or. That is perfectly normal and expected. Every entry in the SID_LIST section of houdini-connections.co.uk will show as status UNKNOWN. That simply means.