Dynamic deconcatenation logically disconnects the members of a dynamically concatenated group. You identify the concatenated group to be deconcatenated by specifying the ddname of the group. When a concatenated group is dynamically deconcatenated, the ddnames that were associated with the data sets before they were concatenated are restored unless this would result in duplicate ddnames. This situation could arise if a dynamic allocation with the ddname to be restored occurred after a dynamic concatenation. In this case, the deconcatenation request fails.
-- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Discussion List [IBM-MAIN@LISTSERV.UA.EDU] on behalf of Charles Mills [charl...@mcn.org] Sent: Wednesday, April 22, 2020 1:59 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Question on dynamic concatenation I could solve this by experimentation but it would take a bunch of work. I am hoping someone here knows the answer. Under dynamic concatenation (https://www.ibm.com/support/knowledgecenter/en/SSLTBW_2.4.0/com.ibm.zos.v2r 4.ieaa800/concat.htm) it says "The name associated with the concatenated group is the ddname that was specified first; the other ddnames are no longer associated with any data set." I wanted to confirm that second part: if I concatenate DD BAR to DD FOO, then DD BAR is no longer allocated, right? Here's what makes me wonder (and wonder about an RCF): in the next section, https://www.ibm.com/support/knowledgecenter/en/SSLTBW_2.4.0/com.ibm.zos.v2r4 .ieaa800/permcat.htm, it says "A group with the permanently concatenated attribute has the following characteristics: ... Except for the first data set in the concatenation, the data sets in the concatenation are no longer associated with their original ddnames." Is that "no longer associated" only true for permanent concatenations, or is that sentence here redundant (and therefore confusing)? Charles ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
