Starting or Restarting a Remote Server from SAP Control Center Fails

Problem: After you have registered a remote server in SAP Control Center, you cannot start or restart the server.

If the DNS server cannot resolve the host name of the machine on which the remote SAP Mobile Server is installed, or if the host has no internal DNS server, you cannot start, stop, or restart that SAP Mobile Server using your local instance of SAP Control Center. Because this network communication relies on name resolution, you must ensure that DNS is set up properly to successfully control a remote SAP Mobile Server.

Before attempting the following solutions, verify that:
  1. SAP Control Center is running on the remote host.
  2. A network connection can be established between your SAP Control Center host and the SAP Control Center agent on the remote server's host.

If the DNS server cannot establish a connection, try the following:

Solution 1: Repair the network DNS server setup. If you or your network administrator cannot modify the DNS, use solution 2.

Solution 2: Change the host name to its IP address in the SAP Control Center service-config.xml file:

  • If you cannot resolve the local host name, modify the file on the local instance of SAP Control Center.
  • If you cannot resolve the remote host name, modify the file on the remote instance of SAP Control Center.
  • If you cannot resolve both the remote and local host names, modify both files.
  1. From the command line, verify the host name by running nslookup<hostname >.
  2. If the DNS server cannot resolve the host name, edit the collocated SCC_HOME\services\RMI\service-config.xml file:
    1. Log out of SAP Control Center.
    2. Stop the SAP Control Center X.X service.
    3. Open SCC_HOME\services\RMI\service-config.xml.
    4. Locate this line: <set-property property="address" value="<hostname>" />.

      If the line does not exist, add it under the <properties></properties> element in the file.

    5. Change the value from the host name to the IP address of the host computer. If the IP address is already used, ensure it is valid (especially if the IP address has recently been changed).
    6. Restart the SAP Control Center X.X service.
    7. Log in to SAP Control Center and proceed with your administrative tasks.
If the DNS server resolves the host name, but the problem persists, check that both:
  • The remote host on which SAP Mobile Platform and SAP Control Center are installed can receive UDP multicasts from the local host on which SAP Control Center is installed, and
  • The remote instance of SAP Control Center uses RMI port 9999.
Solution 3: Make sure the hosts file includes complete entries for each node in the SAP Mobile Server cluster.

  1. On each SAP Mobile Server host, edit the hosts file, located at:

    C:\WINDOWS\system32\drivers\etc

  2. Add entries to identify the IP address and fully qualified network name of every other node in the SAP Mobile Server cluster.
Parent topic: Server Tier Administration Issues