Define a User Catalog, Using SMS Keywords and the VOLUME Parameter: Example 3

In this example, an SMS-managed catalog is defined and a specific volume is referenced.

//DEFUCAT  JOB  ...
//STEP1    EXEC PGM=IDCAMS
//SYSPRINT DD  SYSOUT=A
//SYSIN    DD  *
     DEFINE USERCATALOG -
           (NAME(USERCAT1) -
           VOLUME(VSER01) -
           ICFCATALOG -
           STRNO(3) -
           DATACLAS(VSDEF) -
           STORCLAS(SPECIAL) -
           MGMTCLAS(VSAM))
/*

The DEFINE USERCATALOG command defines an SMS-managed user catalog, USERCAT1. Its parameters are:

NAME specifies the user catalog, USERCAT1.
VOLUME specifies that the user catalog is to reside on volume VSER01. In this example, the installation defined SMS storage class of SPECIAL has the GUARANTEED SPACE=YES attribute. This allows specific volume allocation on this DEFINE using the VOLUME keyword.
ICFCATALOG specifies that the user catalog to be defined is to be in the catalog format.
STRNO specifies that up to 3 concurrent requests to this catalog are to be processed.
DATACLAS specifies an installation defined name of an SMS data class. The data set will assume the space parameters, and the FREESPACE, SHAREOPTIONS, and RECORDSIZE parameters contained in this data class. If your storage administrator has established an ACS routine that will select a default data class, this parameter is optional. However, if a default data class is not assigned to this data set, you must explicitly provide the required parameters or the job will be unsuccessful.
STORCLAS specifies an installation defined name of an SMS storage class. In this example, STORCLAS is not optional and you should not allow the catalog to assume the storage class default assigned by the ACS routines. The storage class named SPECIAL has the GUARANTEED SPACE=YES attribute and must be explicitly specified to enable specific volume allocation.
MGMTCLAS specifies an installation defined name of an SMS management class. This parameter is optional. If it is not specified, the data set will assume the management class default assigned by the ACS routines.