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

[mcowen]

Hi,

I have been trying to connect to a database and get told that "Connect failed because target host or object does not exist". I have started LSNRCTL on both machines yet no joy.
I am trying to connect from a win98 (called fifi) to a win2K (called greg). I am wondering whether I am using the right protocol (TCP is set-up on the network) but how do I test that it is using TCP? I have tried connecting from Greg to Fifi but get the same error.

This is the error....

LSNRCTL> start
Starting tnslsnr: please wait...

TNSLSNR for 32-bit Windows: Version 8.1.5.0.0 - Production
System parameter file is C:\Orahome\network\admin\listener.ora
Log messages written to C:\Orahome\network\log\listener.log
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC0))(PROTOCOL_STACK=(PRESENTATION=TTC)(SESSION=NS)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=FIFI)(PORT=2481))(PROTOCOL_STACK=(PRESENTATION=TTC)(SESSION=NS)))

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=GREG)(PORT=1521))(PROTOCOL_STACK=(PRESENTATION=TTC)(SESSION=NS)))
TNS-12545: Connect failed because target host or object does not exist
TNS-12560: TNSrotocol adapter error
TNS-00515: Connect failed because target host or object does not exist
32-bit Windows Error: 1001: Unknown error

Kind regards,
Matt