Hello Lizette, Yes, My question can it cause any abend by overlaying storage ?
On Wed, Sep 11, 2013 at 2:43 PM, Lizette Koehler <stars...@mindspring.com>wrote: > I am a little confused by "overlay storage" > > Are you asking can it cause an abend by overlaying storage? > > Or are you asking if when you deactivate/active SSI does it replace what > was > there with new information? > > Could you clarify more of what direction you question is going? Is there a > problem or issue or concept you are trying to handle? > > > > > I did a quick internet search on IBM SSI DYNAMIC and came up with this > presentation from Share 2004. Maybe it can help > > > http://www-03.ibm.com/support/techdocs/atsmastr.nsf/5cb5ed706d254a8186256c71 > 006d2e0a/0d43ec382b0f111c8625730f0071eef7/$FILE/s2852pr.pdf > > > Dynamic subsystems are those subsystems that can be defined in one of the > following ways: > > Processing the keyword format IEFSSNxx parmlib member during IPL > Issuing the IEFSSI macro > Issuing the SETSSI system command. > > Subsystems have the choice of being dynamic. Subsystems that are not > dynamic > can be defined only at IPL using the positional form of the IEFSSNxx > parmlib > member, in which case, they cannot use dynamic SSI services. > > In addition to its role in communicating with subsystems, the SSI provides > a > set of authorized system services that are available only to dynamic > subsystems that installations, applications and subsystems can invoke to: > > Define (add) a new subsystem dynamically (without requiring an IPL) > Activate a subsystem that is already defined > Deactivate a subsystem that is already defined > Store and retrieve subsystem-dependent information > Define subsystem options, which include deciding: > If a subsystem can respond to the SSI commands > Which subsystem a subsystem should start under. > Query subsystem information > Define and modify the response of a subsystem to function requests. > > Defining or adding a subsystem is primarily a way of making the subsystem's > unique name known to the system. A subsystem is active when it is ready to > process requests that the SSI directs to it. To deactivate a subsystem, the > subsystem informs the SSI that it is no longer accepting requests. For > example, a subsystem may request that it be deactivated to update the list > of function requests that it supports, or to respond to a problem. > > The dynamic SSI services reject any requests to manipulate subsystems that > were not defined dynamically. > > The services that allow installations, applications and subsystems to > define > and modify the response of a subsystem to function requests replace and > enhance the existing IEFJSVEC service. You can still use the existing > IEFJSVEC service, which is described in Using IEFJSVEC with Your Subsystem, > however IBMR recommends that you use the services described in Services for > Building and Using Your Subsystem instead of IEFJSVEC. These services > provide an easier way to define or change the functional response of a > subsystem. > > Lizette > > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On > Behalf Of mf db > Sent: Wednesday, September 11, 2013 12:33 AM > To: IBM-MAIN@LISTSERV.UA.EDU > Subject: SSI update > > Hello All, > > I am trying to understand if Dynamic SSI update can overlay the storage. > Could someone please shed some light on dynamic SSI update. > > Peter > > ---------------------------------------------------------------------- > 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 > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
