Changing Default Option Settings - mfx - 3.1

To change the default values of MFX options, you must use Method 1 or Method 2 below which respectively relates to the two methods described in STEP 12: Set and Install the MFX Options in Installation Procedure in section above.

Method 1

• This method is very similar to the one described in STEP 12: Set and Install the MFX Options in Installation Procedure in section above. The only difference is that you must provide a new USERMOD name and supersede the old USERMOD name. For example, if your original USERMOD was named SZSS310 then make the new USERMOD be named SZSS311. Copy the old MCS USERMOD statements and update them as shown in bold italics in the following example:

  

• Next you must make the changes needed to the option values in the source code below the ++SRC(QKSYVEC) statement

• Do a RECEIVE and an APPLY of the new USERMOD, which will result in an assembly and link-edit of your new settings.
• Skip to the next item if your changed values do not include the SVC option. Otherwise, do the following which relate to a change to the SVC option:
  • Rename the SVC module in accordance with the IBM SVC naming convention. Use an online facility such as ISPF/PDF to rename the SVC module, which resides as a member in our library named SYNCSORT.MFX.R31.SYNCLPA.
  • To update your CSI with the load module renaming described above, edit and submit member SS31RNMS in the sample JCL library. The member SS31RNMS contains UCLIN commands that will update the LMOD entry in your CSI so it corresponds to the new SVC number.
  • Add or update the SVC definition for your new number in member IEASVCxx in SYS1.PARMLIB if you have chosen an SVC number from 200 through 255. Updating IEASVCxx is not required when your SVC number is 109 with a route code.   

• You must refresh LLA to allow the system to find the load module that has your new option values.

Method 2

• This method assumes you have a currently active options load module that was specified in an MFXPRMxx member. In addition, you resubmitted the sample JCL member SS31OMFX to assemble and link an alternate options load module having a different set of values. The alternate library and load module are specified in the separate MFXPRMyy PARMLIB member.

  You can switch the options from the current to the alternate by using the MFXOPT ACT command described in Method 2a – Default Option PARMLIB in Installation Procedure section above, specifying the MFXPRMyy suffix to provide the location of the load module that you want activated.