How to approach a “Got minus one from a read call” error when connecting to an Amazon RDS Oracle instance

Question

I\'m running Oracle 11GR2 on an Amazon RDS instance. occasionally I get an IO Error: Got minus one from a read call when making a call to DriverManager.ge

Answer 1

I would like to augment to Stephen C's answer, my case was on the first dot. So since we have DHCP to allocate IP addresses in the company, DHCP changed my machine's address without of course asking neither me nor Oracle. So out of the blue oracle refused to do anything and gave the minus one dreaded exception. So if you want to workaround this once and for ever, and since TCP.INVITED_NODES of SQLNET.ora file does not accept wildcards as stated here, you can add you machine's hostname instead of the IP address.