query regarding start up process.



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query regarding start up process.

Postby Viswanathchandru » Fri Oct 29, 2010 5:00 pm

hi,
I am basically a app.programmer and now m working as a sys.adm. I want to know how the main panel gets generated.
i.e, when i type logon XXXXXX followed by my password it drives a ispf panel. how does this get up. where it fetches the information.. hope m not confusing...:?

Thanks & Regards,
Viswa.
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Re: query regarding start up process.

 

Re: query regarding start up process.

Postby Robert Sample » Fri Oct 29, 2010 5:18 pm

I think the key question is why are you not talking to your coworkers about this? They would know the details of how your site is set up far, far better than we ever will.

Broadly speaking, there is a TSOPROC data set somewhere on your system. The specific name is site-dependent. When you log onto TSO, the TSOPROC (which is JCL) is executed to establish the initial environment. There is a SYSPROC DD statement in the TSOPROC which points to a command library and a parameter of the JCL indicates which member of the PDS to use. Those commands are executed, and at some point panel ISR@PRIM will be invoked to bring up your ISPF primary menu. If your site uses RACF, the TSOPROC has its own FACILITY so it can be protected independently of other resources. There's a number of different ways things can be set up -- for example, having a preliminary menu of TSO functions before the ISPF primary screen -- so only by looking at your site (or talking to your coworkers) can you know for sure how it is set up.
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Re: query regarding start up process.

Postby Viswanathchandru » Fri Oct 29, 2010 6:19 pm

Thanks robert!!
ya after asking this question in this forum i asked them... i got a clear reply like what u gave..... thanks a lot!!!!!


Thanks & Regards,
Viswa.
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Re: query regarding start up process.

Postby Robert Sample » Fri Oct 29, 2010 6:46 pm

Glad it helped -- and glad your coworkers and I agreed! :D
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Re: query regarding start up process.

Postby steve-myers » Fri Oct 29, 2010 8:57 pm

This panel --
------------------------------- TSO/E LOGON -----------------------------------
IKJ56420I Userid XXXXXX not authorized to use TSO                             
                                                                               
   Enter LOGON parameters below:                                               
                                                                               
  *Userid    ===> XXXXXX                                                       
                                                                               
   Password  ===>
   ...

is not an ISPF panel. TSO/E logon processing displays the panel using its own internal logic. The actual panel is hard coded into the system; it is not a panel that is easy to alter like the ISPF Primary Options menu.

Original TSO had no such capability. It was oriented around teleprinter terminals such as the IBM 2741. This panel was added after the use of 3270 type terminals became nearly universal.
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Re: query regarding start up process.

Postby Viswanathchandru » Sat Oct 30, 2010 11:39 pm

Thanks steve for ur reply.....
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