Prerequisites for Starting Remote Instances 

Starting an SAP Instance: Remote UNIX Server

To start an SAP instance on a remote UNIX server, the CCMS must log onto the remote UNIX server as a UNIX administrative user. To enable this remote logon, you must maintain the .netrc file on the target UNIX system, on which an SAP instance is to be started or stopped. 

The .netrc file contains the user and password for the remote logon. The file must therefore be protected with read permission only for the SAP administrator in UNIX, no permissions for any other user. It should reside in the home directory of the administrative user for SAP on the target host. 

See the documentation of your UNIX systems for exact information on maintaining .netrc.

Prior to SAP R/3 4.5A, you could use transaction RZ04 (Tools → CCMS → Configuration →Operation modes/instances) to store a UNIX user and password for use in starting SAP instances on remote servers. The remote start-up capability (and the user and password) were used in the CCMS control panel (Transaction RZ03) and in the CCMS system monitor (Transaction RZ02), for example.

The SAP system needs a stored user and password only for starting SAP instances on remote UNIX servers. Remote start-up of instances on AS/400 and Microsoft Windows servers uses other mechanisms and requires no user and password.

It is no longer possible to store a user and password in the SAP system. You should therefore maintain the UNIX files listed above to enable remote startup and shutdown of SAP instances.

Further, whenever Transaction RZ04 is started, the system checks whether a user and password have been stored. If so, the user (the system administrator) is warned about the problem. If the user so wishes, the user and password are deleted automatically by the system.

Starting an SAP Instance: Remote Microsoft Windows Server

An SAP instance on a Microsoft Windows host is started with a message to the SAP Service Manager on the remote Microsoft Windows host. No remote user is required. The Service Manager is set up for the communication that is necessary for remote operations during the installation of the SAP system or of an SAP instance. No further maintenance should be necessary to enable remote start-up and shutdown from the CCMS control panel or system monitor. 

Starting an SAP Instance: Remote AS/400 Server

An SAP instance on an AS/400 host is started using an AS/400 mechanism that is transparent to the system administrator. This mechanism is set up for the communication that is necessary for remote operations during the installation of the SAP system or of an SAP instance. No further maintenance should be necessary to enable remote start-up and shutdown from the CCMS control panel or system monitor.