CFSIZER requires the person to enter how many 4K blocks they are going to need. So unless you know how large it needs to be CFSIZER is not much help.
I could always "guess" I need this many blocks - but how good would that be? The tool I am building would provide the number of 4k blocks then you can use CFSIZER. Which only works for CF Structure for the JES2 Checkpoint. I have not looked as how that relates to a physical checkpoint dataset size. Lizette > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] On > Behalf Of Allan Staller > Sent: Tuesday, January 17, 2017 9:07 AM > To: [email protected] > Subject: Re: How to calculate the JES2 Checkpoint and Spool Space > > How about CFSIZER and translate the storage requirements into space > requirements? > > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] On > Behalf Of Lizette Koehler > Sent: Tuesday, January 17, 2017 10:03 AM > To: [email protected] > Subject: How to calculate the JES2 Checkpoint and Spool Space > > Cross posting to TSO REXX and IBMMAIN > > Long ago IBM Created an APAR OY44087 which provided some guidance and formula > on how to calculate space for the JES2 Ckpt and Spool space. > > I am looking to create a REXX/ISPF function or Excel to mimic this process. > However it is lacking on how some of the newer control blocks, like BERTS, > would affect this calculation. > > Does anyone have any idea how to create a process for generating the sizing > for > JES2 based on the newer resources that have been added since OY44087? > > I know if I try to increase a resource and there is insufficient space, JES2 > will prevent the change from occurring and then tell me what it needs. I think > issuing the command to "see if it works" is not a really practical method. > Particularly if you really did not want to change it at that time. > > I looking to build a "what-if" tool that could help one validate the JES2 > environment will be able to handle any resource changes. And if it cannot, > then what should it be raised to. > > > > Thanks > > > > Lizette Koehler > statistics: A precise and logical method for stating a half-truth inaccurately > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
