Installation and Configuration Best Practices › Configuration › SCDS Configuration and Access

SCDS Configuration and Access

Create a CA SMF Director Control Data Set (SCDS) large enough to contain all of your history index records and still have a surplus of free blocks for new history records.

Business Value:

Correctly sizing your SCDS reduces error messages and the need to enlarge the SCDS after it has been created.

Additional Considerations:

You should consider the following tasks:

• Use the AUTODEL option on the OPTIONS control statement to automatically remove expired history file index entries from the SCDS.

  This reduces the overhead of having entries with expired data.

• Specify PARM=READ when you execute the SMFD program so SCDS processes in read-only mode for operations that do not update the SCDS.

  This provides read-only security for the SCDS for those individuals who need to perform read-only operations like LISTH and EXTRACT and reduces contention on the SCDS data set.

More Information:

See the information on calculating SCDS space requirement in the Systems Programmer Guide.