You are asking IBM to provide a new access method to read the file(s) backward with your request. And there is no guarantee that the actual access method invoked by the program(s) involved will be compatible with your new backwards access method (lets call it LBAM, shall we?). For example, the program might be written to use BSAM (or even EXCP) while your new LBAM is only setup to support QSAM. Your request is not going to end well. J.P. Lizette recently posted:
I created my first RFE, so be gentle. http://www.ibm.com/developerworks/rfe/execute?use_case=viewRfe&CR_ID=81822 Use the GDGORDER parameter for a DD that specifies the base name of a GDG data set (a GDG-all request). This keyword specifies the order in which the individual generation data sets (GDSs) will be concatenated. This RFE is to request that the GDGORDER on JCL apply not only to the base but the individual generation numbers as well. For example. If I code //GDG DD DISP=SHR,DSN=GDGBASE,GDGORDER=FIFO I can get to the oldest entry. I would also like to see //GDG DD DISP=SHR,DSN=GDGBASE(0),GDGORDER=FIFO //GDG DD DISP=SHR,DSN=GDGBASE(-1),GDGORDER=FIFO and so forth. This is to allow the reading of GDG Base backwards and forward as well as get selected entries. If you think this would be beneficial, please vote. Thank you Lizette ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
