If a user logs on, it is JES2 that reads the logonproc from PROCLIB, which it already has allocated (as you mentioned). Kind of a chicken and egg problem: how can a user logon without having read the logonproc? Kees.
-----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Roger Steyn Sent: 19 July, 2016 11:25 To: [email protected] Subject: Re: Exclusive ENQ on a TSO logon procedure There is a big difference between a job allocating a proclib with DISP=OLD and a user editing a logonproc with ISPF. The job with DISP=OLD blocks the entire proclib. ISPF issues an ENQ with DISP=SHR on the proclib and issues its own ENQ on the member with DISP=OLD. This way the library is available for other task with DISP=SHR, but the member (logonproc) is exclusively in use by the ISPF user. This works this way for decades already. Well ... Let me put the scenario a bit more clear a) User A goes and edits the logon procedure in ISPF and doesn't come out of edit mode . b) User B submits a Job xxxx with SYS1.PROCLIB containing the logon proc with DISP=OLD Then the job xxxx waits for an exclusive access for SYS1.PROCLIB which never gets satisfied as the proclib is already allocated with DISP=SHR by many things including JES2 - This is normal Now , my understanding is - At this point , if a USER C tries to logon to the system using the same logon procedure in SYS1.PROCLIB , he shouldn't be able to as GRS has another Exclusive ENQ request waiting from the job xxxx submitted by User B . Shouldn't that be honored before allowing others to access the proclib irrespective of DISP=SHR ? TIA Roger Steyn ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN ******************************************************** For information, services and offers, please visit our web site: http://www.klm.com. This e-mail and any attachment may contain confidential and privileged material intended for the addressee only. If you are not the addressee, you are notified that no part of the e-mail or any attachment may be disclosed, copied or distributed, and that any other action related to this e-mail or attachment is strictly prohibited, and may be unlawful. If you have received this e-mail by error, please notify the sender immediately by return e-mail, and delete this message. Koninklijke Luchtvaart Maatschappij NV (KLM), its subsidiaries and/or its employees shall not be liable for the incorrect or incomplete transmission of this e-mail or any attachments, nor responsible for any delay in receipt. Koninklijke Luchtvaart Maatschappij N.V. (also known as KLM Royal Dutch Airlines) is registered in Amstelveen, The Netherlands, with registered number 33014286 ******************************************************** ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
