Error creating ABAP Project in SAP HANA Studio: Logon to system A4H failed.

[Former Member]

Hi Experts,

I have created instances from the SAP Application Server ABAP 7.4 SP5 incl. Business Warehouse on SAP HANA 1.0 SP7 [Developer Edition] free trial solution, as it is described in documentation. As I cannot log on to the Frontend instance (posted a separate question for this) I have tried to reach the servers from my laptop directly. But I cannot create ABAP Project in SAP HANA Studio. While it is trying to connect to SAP, the following message can be seen: Retrieving compatibility information from back-end system, and then the result is an error message: Logon to system A4H failed (Connection to system "A4H" is currently not available). Then in the event details among others there is the following line : (102) JCO_ERROR_COMMUNICATION: Connect from SAP gateway to RFC server failed..... timeout during allocate...

I have a 64-bit Windows 7 version with the required DLLs VS2010. 

What I have done so far:

First I have created an instance with the Public options, but I faced the error above. Then I have created a new instance as a Corporate Network. The result is: I can logon to Open VPN client, I can ping the server.  I can logon into the system on OS level , both systems are running. I can logon to SAP with SAPGUI.  On AWS I have opened all ports for this instance. Then I updated my JAVA, I uninstalled version 7.2 of HANA client and Studio and installed the 7.0 version. Just for a test, I have also switched off Firewall and the AntiVirus program, still nothing. I can reach the HANA DB from the HANA Studio. I have also tried with other laptop running a 32-bit Windows, and faced the same problem. From this laptop I am able to create an ABAP project in another SAP BW System (this one is not in AWS cloud). 

I would really appreciate some help.

Thanks,

Andrea

[jasmin_gruschke]

Hi Andrea,
quick question. How do you connect to the A4H system, i.e. via the IP address or via the alias (like abapci.dummy.nodomain)?

Which version of the HANA Studio are you running? When creating the AWS instance (including the frontend) you have Version: 1.0.7000, Build id: 386119 (in Help > About SAP HANA Studio) and therein an ADT (ABAP Development Tools for SAP HANA) with version 2.19.2.
Can you please check these versions?

Cheers,

  Jasmin

[Former Member]

Hi Jasmin,

I connect to A4H via the alias. I am running the same version of Hana Studio as I was using during the AWS instances creation, that is SAP HANA Studio version: 1.0.7000, Build id: 386119. Version of ADT for HANA is 2.19.2, while version of ABAP Core Development Tools is 2.19.6.

Regards,

Andrea

[Former Member]

Hi Jasmin,

Thank you for the clue. It finally works!!!!! I have changed the A4H logon from an alias to the IP address and it works.

Have a nice day ( I have ),

Andrea

[jasmin_gruschke]

Hi Andrea,
just a short last comment. You can check on OS level in your AWS instance the entry /etc/hosts, which should match the IP provided by ifconfig (both performed as root user).
If these two match and you have adapted your C:\Windows...\etc\hosts you should perfectly be able to connect also via the alias.

Cheers,

  Jasmin

[Former Member]

Hi Jasmin,

It goes both way: with IP and with alias too as you have described.

Thank you,

Andrea