Kevin, Thanks for the answer. That was what I thought and I just needed some clarification.
Lizette > >Yes, with only 8GB real, setting MAXSPACE to 8GB could cause problems, or >a system outage. This is not an IBM recommendation, but in Poughkeepsie >System Test, we've settled on 50% of real for small images (6 GB or less), >40% for 6 - 10 GB, and 30% for images greater than 10 GB. I'm not sure >offhand if there's a way to determine how much space you need. You could >alternate between taking dumps and raising the MAXSPACE until you get a >full dump, or you hit some limit. Again, this is not an IBM >recommendation, but I'd be reluctant to go above 6GB at most for MAXSPACE. > I wouldn't leave it so large after you have the dump. We have taken >systems down in the past by having MAXSPACE set too high. >--- >Kevin McKenzie > >External Phone: 845-435-8282, Tie-line: 8-295-8282 >z/OS BCP SVT, Dept FXKA, Bldg 706/2D38 > > > >Lizette Koehler <[email protected]> >Sent by: IBM Mainframe Discussion List <[email protected]> >04/07/2009 03:10 PM >Please respond to >IBM Mainframe Discussion List <[email protected]> > > >To >[email protected] >cc > >Subject >MaxSpace and Real Memory > > > > > > >I am currently working with our DB2 group on a problem that requires an >SVC dump. IBM is asking for us to set maxspace to 8g. I only have 8g >real memory on this lpar. We currently have maxspace set to 2.5G. > >What would be my impact if I set the maxspace to 8G on an LPAR with only >8G real memory. Will that cause me any problems or overhead? How can I >calculate what I will really need for this DB2 system to dump? > >Lizette > >---------------------------------------------------------------------- >For IBM-MAIN subscribe / signoff / archive access instructions, >send email to [email protected] with the message: GET IBM-MAIN INFO >Search the archives at http://bama.ua.edu/archives/ibm-main.html > >---------------------------------------------------------------------- >For IBM-MAIN subscribe / signoff / archive access instructions, >send email to [email protected] with the message: GET IBM-MAIN INFO >Search the archives at http://bama.ua.edu/archives/ibm-main.html ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
