Oracle Solution for Error ora-12545

ORA-12545: Connect failed because target host or object does not exist

What triggered the Error:

The address specified is not valid, or the program being connected to does not exist.

What should we do to fix it:

Ensure the ADDRESS parameters have been entered correctly; the most likely incorrect parameter is the node name. Ensure that the executable for the server exists (perhaps "oracle" is missing.) If the protocol is TCP/IP, edit the TNSNAMES.ORA file to change the host name to a numeric IP address and try again.