Restarting a function in the RACF subsystem

Use the RESTART operator command to restart a specified function in the RACF® subsystem. You can use the RESTART command to recover from failures when the RACF subsystem is unable to recover automatically. You can also use it to restart a subtask after applying maintenance, which can, in some cases, allow the maintenance to become effective without requiring that you stop and restart the entire RACF subsystem or re-IPL. For the syntax of the RESTART command, see z/OS Security Server RACF Command Language Reference. For information on security for the RESTART command, see z/OS Security Server RACF Security Administrator's Guide .

The functions you can specify on the RESTART command are shown in Table 1.

Table 1. Functions you can restart using the RESTART command
Function Keyword	Function Restarted	Modules Reloaded
COMMAND	Command handler	IRRSSC00
CONNECTION	Local node and APPC protocol manager task	IRRDDM00
	APPC inbound communication subtask	IRRAPPC0
	APPC outbound communication subtask	IRRAPPC2
	APPC handshaking subtask	IRRAPPC6
	Local mode communication subtask	IRRSSL00
	TCP protocol manager task	IRRTCP00
	TCP connector subtask	IRRTCP01
	TCP handshaking and communication subtask	IRRTCP02
MESSAGE	Message processor	IRRSSMG0
OUTPUT	Output handler	IRRSSOP0
RACLINK	RACLINK task	IRRSSK00
RECEIVE	RRSF request receiver	IRRSSR00
SEND	RRSF request sender	IRRSSND0

The RESTART CONNECTION NODE(nodename) command can be used to restart a pair of handshaking and communication subtasks. The NODE keyword specifies the remote node for which the subtask pairs are to be restarted. You can specify NODE(*) to restart all handshaking and communication subtasks.