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VM Reader Protection

The VMRDR keyword lets administrators control who can put files into whose virtual reader. For instance, the CMSBATCH virtual machine’s reader might otherwise be unprotected from a security standpoint.

For example, the following command prevents a user from punching a file to CMSBATCH:

TSS ADD(PROFRND) VMRDR(CMSBATCH)

From a security standpoint, the key to implementing VMRDR security is to remember that VMRDR lets the ACID holder place spool files in the specified userid’s virtual reader.