I am testing some a Pervasive-provided C# that uses DTO to connect to a Pervasive DB server and get a list of DBNs. I am able to connect to a database on the Pervasive DB using Pervasive .NET OLEDB driver with no problem. When I try to connect via DTO, I get a 'server not found' errror. I am using the same IP address for both the driver connect string and server name in connect method.

Is there a setting on the Pervasive Database server that must be configured in order to accept these DTO calls? Is there a way to debug this issue?

 What version of PSQL is on the client and server?  What's the exact error being returned by the Connect method?

THe server is a Pervasive SQL Server for Windows NT v8.70. The client says it is Pervasive SQL 9.51.

The result value returned from the Connect command was Dto_errSERVER_NOT_FOUND.

Here is the sample code we are using:

DtoSession mDtoSession = new DTOLib.DtoSession();
dtoResult result;
try {
result = mDtoSession.Connect(Properties.Settings.Default.ComputerName, Properties.Settings.Default.UserName,
Properties.Settings.Default.Password);
if (result != 0)
{
Console.WriteLine("Error connecting to server. Error code:" + result.ToString());
Console.ReadLine();
    }

The computer name value in this sample was set to an IPAddress

 Using the code you posted, I changed the connect to point to my machine.  It worked.  Since you are using V8.7 on the server and v9.5 on the client, you might be having problems there.  I would recommend either downgrading the client to v8.7 or upgrading the server to 9.5.