VLFNOTE command

The syntax and function of the VLFNOTE keywords that do not require OPERATOR authority to use are described in z/OS TSO/E Command Reference. The keywords described here are intended for your use. You may use them to notify the virtual lookaside facility (VLF) to delete (remove from use through VLF):

an entire class of IBM-supplied or user-supplied data
a named collection of data (non-PDS data) from an IBM-supplied class
partitioned data sets (PDSs) associated with a particular volume serial from an IBM-supplied or user-supplied class

A class may be:

a set of related PDSs - as specified with the EDSN keyword in the COFVLFxx parmlib member
a named collection of data (non-PDS data) - as specified with the EMAJ keyword in the COFVLFxx parmlib member

An IBM-supplied class name begins with an alphabetic character in the range A-I.

For detailed information concerning the COFVLFxx member of SYS1.PARMLIB, see z/OS MVS Initialization and Tuning Reference.

Note: VLF can run on a sysplex and be automatically notified when partitioned data sets are deleted. In this environment, you might not need to enter the VLFNOTE command. (However, VLF is not automatically notified when non-PDS data is deleted.) z/OS MVS Programming: Authorized Assembler Services Guide provides more information about VLF notification.

The syntax of the VLFNOTE command is:

To use the VLFNOTE command, VLF must be installed and active.
VLFNOTE is an authorized command.
You require OPERATOR authority to issue the indicated DELETE requests.

DELETE

Delete an entire class of data, non-PDS data from an IBM-supplied class, or all PDSs associated with a particular volume serial.

CLASS

A class of data sets or a class of non-PDS data

class_name

The name of the class

value:: a class-name specified in the COFVLFxx parmlib member

MAJOR

Non-PDS data from an IBM-supplied class

major_name

The name of the data

value:: a major_name specified on the EMAJ keyword with the corresponding class_name in the COFVLFxx parmlib member

VOLSER

All PDSs associated with the particular volume serial

vol_id

The volume serial of the volume on which the PDSs reside

value:: a volume serial known to VLF