I don't understand very well the solution : does SQLNET.INBOUND_CONNECT_TIMEOUT = 0 means ignore the parameter or Zero wait tolerance ? In all case i don't see the logic behind the workaround B. Polarski http://www.smenu.org -----Original Message----- From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] Sent: Tuesday, 06 June, 2006 9:27 PM To: nirmalya@xxxxxxx; oracle-l@xxxxxxxxxxxxx Subject: RE: LISTENER issue What does your alert log say? You may be hitting a bug I found in 10.2.0.2 (Bug 4745075) If you are getting this error, ora-3136, set these parameters - In the sqlnet.ora add - SQLNET.INBOUND_CONNECT_TIMEOUT = 0 Listener.ora - SUBSCRIBE_FOR_NODE_DOWN_EVENT_<listener name> = OFF INBOUND_CONNECT_TIMEOUT_<listener name> = 0