<snip> Is it recommended to do a dynamic LINKLIST during a peak production hours ? Will there be any impact to the system during that time as we stop LLA as well. </snip>
I agree with all the responses. The real answer depends on what the OP means by "do a dynamic LINKLIST". If it means only "define and activate a new LNKLST set", then there is no problem. That is the design point for the dynamic LNKLST function. I think of "LNKLST update" as "unpredictably dangerous", both for the module mismatch case that Tom M mentioned and for the cases where you rip things out from underneath a fetch-in-progress or where PDSE operations are involved (which can have longer durations iof sensitivity) -- the DELAY option of LNKLST UPDATE should be considered for any use of UPDATE. There is potentially significant performance impact to any system if you "stop LLA". But activating a new LNKLST set does not require stopping LLA. You should not stop LLA if activating a new LNKLST set. Peter Relson z/OS Core Technology Design ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN