Derrick, I checked in our installation and to my surprise we don't see any XCF traffic during the day. According to DISPLAY XCF, some 25 messages have been exchanged. From CMF output, I can see that they were exchanged during startup of the DC's.
My DB2 colleagues do run reports on all members of a data sharing group, but apparently in our configuration without any XCF traffic. What could be the difference between these installations? Regards, Kees. > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] On > Behalf Of Derrick Haugan > Sent: 04 December, 2017 15:34 > To: [email protected] > Subject: XCF large message traffic bursts (BMC SQL Performance) > > Just an inquiry, to see if others have had issues with this products > use/abuse of XCF. BMC product is sending large bursts of XCF traffic > between systems, and the messages are the maximum size (62464). Over the > past few months, it has sent bursts like these (over 8K large messages > in 1 minute interval), and filled up XCF buffers on the sending system > (transport class we use for large message traffic). We are going to > isolate the product's XCF group (DCPLEX$) into its own transport class, > so it cant block other users of the our general-purpose large message > transport class. > > Product does reporting, and sends its results back to a focal point > (sessions used by DBAs etc) for analysis. Spoke with the vendor, they > stated the options are - a) turn off the XCF mechanism in the product or > b) enable it for XCF communication, but there is no control over what it > may send (unlimited). These seem like poor choice of options for tuning > it. If XCF is disabled, DBAs would not be able to assemble reports for > DB2 using data sharing for multi-system operation. > > ---------------------------------------------------------------------- > 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
