On Tue, 10 Feb 2009 09:16:26 -0600, Rebecca Martin <[email protected]> wrote:
>OK, I am going to leave the PROGxx, LINKLST & LLA part of Linda's question >alone and just talk about DB2 maintenance and migrations. Then it's a good idea to change the subject line. > Her concerns >really apply not just to new releases but also to rolling out maintenance to the >current release. You don't want to apply it to all your subsystems at once. >The way we do it is: SDSNLOAD is not in the LINKLST, every subsystem has >it's own DSNx.SDSNLOAD library where x is the subsystem identifier. Batch >jobs and the subsystem address spaces all steplib to the appropriate >SDSNLOAD. For TSO users there is one DSNx.SDSNLOAD in the ISPLLIB >concatenation - this subsystem is the last subsystem for the particular LPAR >to receive any maintenance or migrate to a new release. ISPF panels for DB2 >utilities acquire the desired subsystem identifier before invoking any utilities >and perform the appropriate LIBDEF for SDSNLOAD library. In the LINKLST we >do have the DSNx.SDSNLINK for the subsystem that is last in line for the >LPAR. > This could be a religious discussion. FWIW, our DB2 support folks requested SDSNLOAD removed from the LNKLST many years ago due because of the issues surrounding the support of multiple DB2 and QMF versions in a large environment. One post suggested replacing code in a library to change the level and not change the library names. A method some shops use (and that I dislike - search the archives) is to use data set aliases to accomplish the same thing. That was used in the past here also, but no longer (yeah!). Mark -- Mark Zelden Sr. Software and Systems Architect - z/OS Team Lead Zurich North America / Farmers Insurance Group - ZFUS G-ITO mailto:[email protected] z/OS Systems Programming expert at http://expertanswercenter.techtarget.com/ Mark's MVS Utilities: http://home.flash.net/~mzelden/mvsutil.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
