What does the “IO Error: The Network Adapter could not establish the connection” error mean when trying to start the application?

„IO Error: The Network Adapter could not establish the connection”, 

it indicates that there is no network connection to the server.

In this case, you should:

  • check if there are correct entries of server address, port and instance name in the aSISt db.properites subdirectory.
  • the port or service is blocked on the ORA server firewall
  • there is no network communication to the server
  • please restart either database machine, net card or oracle services
  • use command:

netstat -ano

to check if default db port isn’t blocked by another process. To kill the process write down following process id, then run the command

taskkill /pid 18264 /f

where 18264 is identification of another process which uses Oracle default port.