Problem: When connect to an 11i E-Business Suite database using SQL Developer, the following error appears: An error was encountered performing the requested operation: IO Error: Connection reset Vendor code 17002 Sometimes, the error reads: An error was encountered performing the requested operation...
http://www.dba-oracle.com/t_troubleshooting_sql_net_connectivity_errors.htm http://www.dba-oracle.com/t_sql_developer_vendor_error_17002.htm