>Isn't there still some code in the system that uses the original DEB? No
No (IBM-owned) system code uses CVTLINK or its DCB/DEB directly. When the system sees CVTLINK it "translates" CVTLINK into ASSBDLCB -> DLCBDCB@ . Code stll running with the IPL-time LNKLST will of course access the original DEB when using the DLCBDCB@ path. . After a LNKLST UPDATE JOB(*) to a new LNKLST there won't be any such code (aside from the unpredictably dangerous window conditions). There could still be vendor or customer code that traverses the DCB/DEB path from CVTLINK. It is for this reason that we commit never to free the DCB/DEB of the IPL-time LNKLST. Peter Relson z/OS Core Technology Design ---------------------------------------------------------------------- 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