JCL Class Parameter
CLASS parameters used to categorize the jobs. I.e. SHORT RUN or LONG RUN jobs.
CLASS always referred with one letter and allows alphabetic (A-Z characters), numeric (0-9) as well.
CLASS type predefined by system during system installation and every CLASS type has its own characteristics.
CLASS definition includes number of resource constraints, usage and CPU time etc,.
CLASS parameters usually group the jobs based on the predefinition.
CLASS parameter is used to avoid the contention between the jobs which are using same resource.
CLASS parameter is used to achieve good balance in the system.
//JOB-NAME JOB (ACCT-INFO),’PROGR-NAME’, CLASS=class-name, keyword-parameters
If any questions on the above, post your queries on Jcl Discussion forum
Jobcard Keyword Parameters MSGCLASS parameter