START command

Use the START command to start started tasks, which support system functions such as IMS™, CICS®, and RACF®. Started tasks are defined in cataloged procedures (residing in procedure libraries) or through jobs residing in a partitioned data set defined in master JCL.

Note: In general, IBM® recommends that when you start a subsystem, you make the subsystem name specified in the IEFSSNxx parmlib member the same as that of the member you use from SYS1.PROCLIB. If the names do not match, you may receive error messages when you start the subsystem.

The following figure lists the tasks the START command can perform. Use it as an index to details about particular uses of the command.

Table 1. Summary of the START command
Topic: Command:
Starting a system task from a console START membername
Starting the APPC/MVS address space START APPC
Starting the APPC/MVS transaction scheduler address space START ASCH
Starting the Common Event Adapter address space START CEA
Starting the Generalized Trace Facility START GTF
Start of changeStarting IBM Generic Tracker for z/OSEnd of change Start of changeSTART GTZ,SUB=MSTREnd of change
Starting hardware instrumentation services (HIS) START hisproc
Starting the Base Control Program internal interface (BCPii) address space after BCPii has been terminated START HWISTART
Start of changeStarting IBM Health Checker for z/OSEnd of change Start of changeSTART hzsproc,HZSPRM=PREVEnd of change
Starting the library lookaside (LLA) address space START LLA
Starting the Object Access Method (OAM) START OAM
Starting Resource Recovery Services (RRS) START RRS
Starting the System Object Model (SOM) subsystem START SOM
Starting TSO/VTAM time-sharing START membername
Starting the virtual lookaside facility or data lookaside facility START VLF or START DLF
Starting an external writer START XWTR
Parent topic: MVS system commands reference