TCP connections are not possible to the specified server

[Former Member]

I'm trying to add an additional application server instance to a HA PI 7.1 system.

During the installation, I get the error:

TCP connections are not possible to the specified server.
SOLUTION: Check that the tcp protocol is enabled on the server and there are no conflicts on binding ports (you can see it in the server error log).    

No messages are being raised with the Windows system logs.

I have tried restarting the server and resuming the installation, but this did not help.

Here is the relevant part of the SAP log:

TRACE      2012-04-13 11:29:57.374 [iaxxgenimp.cpp:1241]           CGuiEngineImp::acceptAnswerForBlockingRequest  Waiting for an answer from GUI 
TRACE      2012-04-13 11:42:19.44 [iaxxdlghnd.cpp:198]            CDialogHandler::doHandleDoc()  ACTION_OK received 
TRACE      2012-04-13 11:42:19.059  NWDBmss.getDBInstanceName()
TRACE      2012-04-13 11:42:19.059  NW.getPersistentDefaultProfile()
TRACE      2012-04-13 11:42:19.106  NW.isUnicode(true)
TRACE      2012-04-13 11:42:19.106  NW.isUnicode() done: true
TRACE      2012-04-13 11:42:19.106  NW.getPersistentDefaultProfile() done
TRACE      2012-04-13 11:42:19.106  NWDBmss.getDBInstanceName() done: MYSERVER123
TRACE      2012-04-13 11:42:19.106  t_MssLogin.remove(WHERE Key='std')
TRACE      2012-04-13 11:42:19.122  t_MssLogin.insertRow({   Key:std   Host:MYSERVER123   LoginType:WIN }), inserting 
TRACE      2012-04-13 11:42:19.122  NW.hasABAP(undefined)
TRACE      2012-04-13 11:42:19.122  NW.hasABAP() done: true
TRACE      2012-04-13 11:42:19.122  NW.isAddinInstallation() done: false
TRACE      2012-04-13 11:42:19.122  NW.hasJava(undefined)
TRACE      2012-04-13 11:42:19.122  NW.hasJava() done: true
TRACE      2012-04-13 11:42:19.122  MSSTRC: odbc driver is installed.
TRACE      2012-04-13 11:42:19.153  MSSTRC: native client is installed.
TRACE      2012-04-13 11:42:19.200  TCP connections are not possible.
TRACE      2012-04-13 11:42:19.200 [iaxxgenimp.cpp:745]             CGuiEngineImp::showMessageBox       TCP connections are not possible to the specified server.

Please can you tell me how to resolve this?

Thanks.

[former_member189546 · Accepted solution]

Hello,

Please restart the database that should clear the error.

Then try to continue with the installation however you may need to restart the installation from the begining

regards,

John Feely

[Former Member · Accepted solution]

This is resolved, but I'm not sure how.

I think it started working after I went to the DB server and opened SQL Server Management Studio and SQL Server Configuration Manager... Maybe opening these things triggered something...

[Former Member]

Hi,

normally the PAS and SAS communicates thru MS port and GW port .. check these ports once on both PAS ad SAS...

[Former Member]

Hi,

Confirm that it is possible to make a TCP/IP connection with the specified server host using other TCP/IP applications, such as ping, telnet, nslookup or ftp. Check if the hostname is being resolved to the ip address and vice-versa..

Regards,

Sonia

[Former Member]

I am able to ping the server and also ping from the server to other servers (including the 2 MSCS servers).

The IP and DNS are both okay (it resolves when I ping it using the DNS name, or run a ping -a <IP address>).

Thanks.

[Former Member]

Dear Paul,

Check the services file weather all the tcp/ip ports have been opened or not.

Thanks & regards,

Veeresh K R

[Former Member]

The SAP entries had not been added to the services file yet (I'm assuming the installation program has not reached that part of the process yet). So I manually added the entries, but I still get this error.