A couple of our z/OS 2.1 systems have been IPLed this weekend and they all start with an UIC = 0. As far as I remember, it has always been this way.
Kees. -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Feller, Paul Sent: 22 August, 2016 15:20 To: [email protected] Subject: Re: Low UIC count on z/OS 2.2 As far as I know a low UIC count right after an IPL is normal. I don't have a z/OS 1.13 system, but on our z/OS 2.1 and z/OS 2.2 systems do show a low UIC count after an IPL. The count gets higher over time. I think this is just the nature of the UIC. Thanks.. Paul Feller AGT Mainframe Technical Support -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Jaco Kruger Sent: Monday, August 22, 2016 07:43 To: [email protected] Subject: Low UIC count on z/OS 2.2 Good day, We are preparing to migrate from z/OS 1.13 to z/OS 2.2. The TST LPAR has 8GB Central Storage assigned and it resides on IBM z13. On z/OS 1.13, the UIC count is 65535 during and after the IPL. On z/OS 2.2, the UIC count is below 1000 during the IPL and it gradually increases. The Central Storage have been increased to 50GB on the TST LPAR, but the UIC count during the IPL stays below 1000, even when only basic components are started. There is no PAGING to Auxiliary storage. HVCOMMON, HVSHARE are DEFAULT values. LFAREA is set to 0M The WSET and Memory Object sizes (as obtained from RMF) have been compared between z/OS 1.13 and z/OS 2.2 and there are no candidates that justifies the low UIC count. Any idea on how to determine the reason for the low UIC count ? Regards Jaco Kruger ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- 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
