Changing the DLF parameters

Use the MODIFY DLF,NN command to cause the data lookaside facility (DLF) to use the specified COFDLFxx member of the logical parmlib. The COFDLFxx parmlib member must contain a valid CLASS statement. The only values that change are limits on DLF use of storage through the keywords: MAXEXPB and PCTRETB. The new limit values affect only new connections; any existing connections or DLF objects that exceed the new limits are not affected. The CONEXIT parameter from the initial COFDLFxx member remains valid. See z/OS MVS Initialization and Tuning Reference for further information about the use of the COFDLFxx member.