After upgrade database to 10.2.x you can observe such entries in alertlog:
WARNING: inbound connection timed out (ORA-3136)
It is caused by the fact that in 10.2.x default value of parameter SQLNET.INBOUND_CONNECT_TIMEOUT is 60 seconds.
To fix it:
1. On server side in sqlnet.ora add line:
2. On server side in listener.ora add line:
INBOUND_CONNECT_TIMEOUT_<listener_name> = 110
WARNING: inbound connection timed out (ORA-3136)
It is caused by the fact that in 10.2.x default value of parameter SQLNET.INBOUND_CONNECT_TIMEOUT is 60 seconds.
To fix it:
1. On server side in sqlnet.ora add line:
SQLNET.INBOUND_CONNECT_TIMEOUT=1202. On server side in listener.ora add line:
INBOUND_CONNECT_TIMEOUT_<listener_name> = 110
