This option applies
to the control file (BL_DB2IN=), the input file (BL_DB2REC=), and
the output file (BL_DB2PRINT=) for the bulk loader. Use this option
to specify a data class for a new SMS-managed data set. SMS ignores
this option if you specify it for a data set that SMS does not support.
If SMS is not installed or active, the operating environment ignores
any data class that BL_DB2DATACLAS= passes. Your site storage administrator
defines the data class names that you can specify when you use this
option.