Ping functionality for backend in webdynpro

Question

Hello Everybody,
I want to check whether my SAP R/3 system is up and running or not before calling any RFC from webdynpro or any other J2EE applications.
For that whether any fuctionality like ping is available in WAS 6.40?
Also i want to know what all exceptions can occur when calling any RFC, so that i can write code in advance for all those exceptions and take proper actions against them.
I am waiting for reply.Please reply as soon as possible its very urgent.
Thanks,
Bhavik Devisha

Answer 1

Hello,
why don`t you like  JCO.Client.ping() method? Or, you can use same approach like in Dynpro content administrator:
  public void onActionTestConnection(com.sap.tc.webdynpro.progmodel.api.IWDCustomEvent wdEvent )
    //@@begin onActionTestConnection(ServerEvent)
          String name = wdContext.currentJCOClientsElement().getName();
          IWDMessageManager msgMgr = wdThis.wdGetAPI().getComponent().getMessageManager();
          try {
               IWDJCOClientConnection connection = WDSystemLandscape.getJCOClientConnection(name, null);
               // Ping ...
               JCO.Client client = connection.getClient();
               client.ping();
               // Create a new repository
               IRepository repository = JCO.createRepository("MYRepository", client);
               // Check used user
               JCO.Function func = repository.getFunctionTemplate("USER_NAME_GET").getFunction();
               client.execute(func);
               String userID = (String) func.getExportParameterList().getValue("USER_NAME");
               // Release the client into the pool
               connection.release();
               msgMgr.reportSuccess("JCo destination '" + name + "' was sucessfully tested with user '" + userID + "'");
          } catch (Exception e) {
               msgMgr.reportException(e.toString(), true);
    //@@end
Best regards, Maksim Rashchynski.