E.Message is Empty

[cptngrb]

try
OraSession.LogOn;
except
on E: Exception do
showmessage('Error: ' +E.Message);
end;

Show only "Error:"

how to understand what is the error? In sources OraSession.LogOn Oracle.pas do not see a null exception

 

[Marco Kalter]

Could it be that you are using an Oracle10g or earlier client on Windows 7 or later? If so, you should update to an Oracle11g or later client.

 

[cptngrb]

client 12_2, windows server 2012r2

 

[cptngrb]

sorry, client 11 change to client 12 and its work to work correctly