Ray, thanks for your explanation. I have spent two days (together with my VTAM colleague) attempting to understand what the parm in relation to the health check actually *mean*, never mind the sloppy documentation for 'DISPLAY CSM' which is that way in the VTAM books, too. Plus the VTAM book talks about the value being 1.5times what is specified.
I cannot say that I now know what the check is actually telling me, but I learned that when it trips, I should check the MVS set value for CSA in IEASYS, given that IVTPRM00 is most probably in many installations exactly like IBM delivers it - set to 120M for both values. Regards, Barbara -- Ist Ihr Browser Vista-kompatibel? Jetzt die neuesten Browser-Versionen downloaden: http://www.gmx.net/de/go/browser ---------------------------------------------------------------------- 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