Starting an R/3 Instance: Remote UNIX Server
To start an R/3 instance on a remote UNIX server, the CCMS must log onto the remote UNIX server as the UNIX administrative user for R/3. To enable this remote logon, you must maintain the . netrc file on the target UNIX system, the one on which an R/3 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 R/3 administrator in UNIX, no permissions for any other user. It should reside in the home directory of the administrative user for R/3 on the target host.
See the documentation of your UNIX systems for exact information on maintaining . netrc .
Prior to Release 4.5A, you could use Transaction RZ04 (Tools ® CCMS ® Configuration ® Operation modes/instances) to store a UNIX user and password for use in starting R/3 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 R/3 System needs a stored user and password only for starting R/3 instances at remote UNIX servers. Remote start-up of instances at AS/400 and Windows NT servers uses other mechanisms and requires no user and password.
It is no longer possible to store a user and password in R/3. You should therefore maintain the UNIX files listed above to enable remote startup and shutdown of R/3 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 R/3 Instance: Remote Windows NT Server
An R/3 instance on a Windows NT host is started with a message to the SAP Service Manager on the remote Windows NT. No remote user is required. The Service Manager is set up for the communication that is necessary for remote operations during the installation of R/3 or of an R/3 instance. No further maintenance should be necessary to enable remote start-up and shutdown from the CCMS control panel or system monitor.
Starting an R/3 Instance: Remote AS/400 Server
An R/3 instance on an AS/400 host is started through 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 R/3 or of an R/3 instance. No further maintenance should be necessary to enable remote start-up and shutdown from the CCMS control panel or system monitor.
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