NET/MASTER Management Services (MS) Command Reference Manual

LBANNER
PROCESS SWITCH
NonStop NET/MASTER MS Commands
115412 Tandem Computers Incorporated 2–267
PROCESS SWITCH The PROCESS SWITCH command reverses the roles of the primary and backup
processes of a NonStop NET/MASTER MS process pair. You can use this command
to reconfigure the process pair online. This eliminates the need to shut down NonStop
NET/MASTER MS, change a process definition in the configuration file, and then
restart NonStop NET/MASTER MS to implement the configuration change.
This command applies to the NonStop NET/MASTER MS control process (NCP);
global memory manager (GMM) processes; security exit processes; and BK, EM, and
NC application processes when each is running as a process pair. The command has
no effect on processes running without a backup process.
You can use the PROCESS SWITCH command with the PROCESS ALTER
BACKUPCPU command to rebalance a system by relocating process pairs among
CPUs. See the PROCESS ALTER BACKUPCPU command and refer to the NonStop
NET/MASTER MS System Management Guide for more information.
PROCESS SWITCH= process-name
Note There is no loss of service when the roles of the NCP, GMM processes, and security exit processes are
reversed. However, there is a loss of service when the roles of BK, EM, and NC processes are reversed.
For example, users are logged off and must log on again, nonpersistent NCL processes are stopped and
must be restarted, running commands are stopped and must be reexecuted, and so on.
process-name
specifies the name of the NonStop NET/MASTER MS process.
Considerations
The default authority level of this command is 4.
You can enter this command from any NCL procedure, including the INIT NCL
procedure, by using either the CMD core statement or the INTCMD verb.
For related information, see the PARAM, PROCESS ALTER, SHOW PROCESS,
and STATUS commands.
Example
The following example reverses the roles of the primary and backup processes of
$ZNNM:
PROCESS SWITCH=$ZNNM