RE: Save while Active -- SYSTEM21

Jeff,

How are you ended your subsystems? On some of my system 21 subsystems I am
just doing an "ENDSBS *immed". But ones like inventory and manufacturing
would not go down clean if I did that. 

Any suggestions?

Thanks,
Theresa

        -----Original Message-----
        From:   Jeff Klipa [SMTP:jklipa@xxxxxxxxxxx]
        Sent:   Wednesday, November 05, 2003 8:51 AM
        To:     system21@xxxxxxxxxxxx
        Subject:        Re: [SYSTEM21] Save while Active

        Jon,

        We have automated our nightly routine to terminate the JBA
subsystems and 
        End SBS QINTER in order to do 4 things...
        1.) Run the AM Day End job.
        2.) Run the CF Day End job.
        3.) Clear bogus active record locks and run CLNUSRALC to free up
bogus seat 
        allocations.
        4.) Initiate the SAVLIB *ALLUSR job.

        Both 1 and 2 require that no users be signed into JBA or else they
will hang 
        and the night job will also hang.  That's not a good thing...  We
have set 
        our Inactivity timer to 120 minutes so if a user leaves him/herself
signed 
        on when they go home the system will terminate their interactive
session.

        There are 3 options for the Save While Active parameter that you
need to 
        choose from...

        *LIB
            Objects in a library can be saved while they are in
            use by another job.  All of the objects in a library
            reach a checkpoint together and are saved in a
            consistent state in relationship to each other.

                Note:  Libraries with thousands of objects may be
                too large for this option.

        *SYNCLIB
            Objects in a library can be saved while they are in
            use by another job.  All of the objects and all of the
            libraries in the save operation reach a checkpoint
            together and are saved in a consistent state in
            relationship to each other.

               Note:  If you specify this value and you are
               saving many libraries, it can take a long time to
               reach a checkpoint for all of the objects and
               libraries in the save operation.

        *SYSDFN
            Objects in a library can be saved while they are in
            use by another job.  Objects in a library may reach
            checkpoints at different times and may not be in a
            consistent state in relationship to each other.

                 Note:  Specifying this value eliminates some size
                 restrictions and may enable a library to be saved
                 that could not be saved with SAVACT(*LIB).

        >From a disaster recovery standpoint I doubt that *SYSDFN would be a
good 
        choice.
        And *LIB probably would not work due to the large number of objects
in the 
        file library...
        So, *SYSDFN may be the best of the 3 options...  But you are the
only person 
        who can decide what's best for your situation.

        >From my perspective you must have a small slice of time where the
users are 
        not locking the JBA library list file APG25PHY so that you can run
the 
        AMDAYEND and CFDAYEND jobs at a minimum...  Having that window of 
        opportunity to initiate the SAVLIB command would also seem to make
sense 
        from the standpoing of establishing a checkpoint.  If only to
shutdown and 
        restart the background subsystem jobs.  There used to be a problem
with the 
        job date not rolling forward at midnight, but I don't know if that's
still a 
        problem.

        Our users are offline for approximately 1/2 hour.  Our save starts
around 
        1:30 AM and runs for about 8 or 9 hours.  We use BRMS with a 3570
MAGSTAR 
        and our backup uses 4 tapes.  We run a 720.

        I say tell them you need a 15 minute window and schedule it for the
time of 
        day when there is the least demand on your system...

        I know there will probably be lots of input on this topic...  Should
prove 
        interesting...  I welcome opposing viewpoints...

        Good luck...
        ----Original Message Follows----
        From: JonWadey@xxxxxxxxxxxxx

        I've been asked by our new parent company,  for 24 hrs operations on
one
        box.  With this in mind the only way I can think of doing a nightly
save
        is via the save while active command.  Does anybody out there use
this
        method of saving and if so what problems if any have they come
across?

        I am aware that any active objects will not be saved at the time and
this
        could lead to data being saved at different times.

        TIA

        Jon



        Jon Wadey
        IT Manager
        M & S Toiletries Ltd
        Tel :- (+44) 1506 835600
        Fax :- (+44) 1506 835609

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