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
Starting hardware instrumentation services (HIS)	START `hisproc`
Starting the Base Control Program internal interface (BCPii) address space after BCPii has been terminated	START HWISTART
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