Re: Limiting quantity of tape drives used by user
Take a look at MOUNTMON https://ftp.software.ibm.com/storage/tapetool/ -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
ADRDSSU UIM
Hello All, As I am trying to understand ADRDSSU's DUMP/RESTORE process, I came across UIMs that I could use to get more insight. The UIMs that I was particularly interested in were Eioption-03(Read physical record) and Eioption-06 (Write physical record). As a first step I dumped a 3MB dataset to a dump dataset, and recorded physical record details using UIM-06 (the details I collected was number of times UIM-06 got invoked, and total length of all physical records by referring to EIRECALN field). Similarly during RESTORE process, I collected physical record details using UIM-03. As I compared UIM-06 details against UIM-03 details, I noticed that UIM-03 was called one time more than UIM-06 and also the total length of all the physical records didn't match. I was expecting UIM-03 to get control same number of times as UIM-06 and also total length (of all physical records) should match but neither of them matched. Now my question is why there is no 1:1 correspondence between the statistics I collected using UIM-03 and UIM-06? I am wondering if I missed something while collecting the statistics. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Linear Datasets
Hi All, I have a TASK-A that attaches TASK-B, and then waits for TASK-B to complete. TASK-B does the following, 1. Dynamically allocate a linear dataset. 2. Issue "DIV IDENTIFY" for the allocated DDNAME. 3. Issue "DIV ACCESS", and then "DIV MAP". I believe at the end of TASK-B, I need not "UNMAP", "UNACCESS", "UNIDENTIFY", and deallocate the linear dataset as it will automatically be done as part of the task clean-up. Please let me know if my understanding is correct. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: SVC 26
Thanks much for your inputs! Yes. In the SLIP dump I took, I see an SRB entry in the SYSTRACE after "SVC 1A" entry. I will need to verify under which address space that SRB is scheduled to run. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: SVC 26
Thanks for the info! -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: SVC dump data set layout
Actual address space dump has an eye-catcher "CV" at 5th position, and then the actual data starts at 65th position. Each such record has 4096 bytes of dump data starting from 65th position. 4 bytes from position 25 represents the starting address of the dump data, and you may have to sort the dump dataset something like (25,4,CH,A) since the dump data may not be in the proper ascending order of virtual addresses. Also for example if the 1st record has dump data representing the starting address x'', and the next record has dump data representing address x'2000' then that means the dump data starting from address x'1000' has all zeros until x'2000', and hence not captured in the dump dataset. You may have to take care of this if you wish to do something programatically. The dump may also include "Dataspace" dump which is indicated by by an indicator "DS" at position 5. You may create a dataspace, and move the dump data to dataspace so that there is 1:1 mapping between dataspace addresses and virtual addresses (4 bytes from 25th position) in the dump data. With this you could just point to the dataspace, after loading, and scan through all the control blocks that you would like to inspect. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
SMF:- IEFU83, IEFU84 exits
My assumption is that SMF performs some house-keeping functions before passing control over to IEFU83/IEFU84 exits. The minimum house-keeping functions that I could think of are a. Establish an ESTAE recovery routine (may be FRR for IEFU84??) b. GETMAIN to obtain SAVEAREA for the exits (Please let me know if there are any more functions that SMF could perform). Now my question is does SMF perform these house-keeping functions only once, and uses the same recovery routine stack/SAVEAREA for all the different U83/U84 exits defined on the system OR it performs these house-keeping functions each time a different U83/U84 exit is to be called? -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: Assembler :- PC Instruction
Thanks everyone for all your inputs. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: Assembler :- PC Instruction
Thanks for your response. Yes I agree that PC doesn't involve any interruption. "Principles of operations" manual clearly explains the PC translation process but I wanted to know "Who" will perform this translation process? For example we have "Dynamic Address translation" facility to transform Virtual addresses, and is there any similar facility to perform PC translation process. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Assembler :- PC Instruction
I have a question on PC instruction for which I have been looking for an answer for quite sometime now. According to "Priciples of operations" manual, execution of an SVC instruction causes a new PSW to be loaded from x'1C0' (SVC FLIH), and program interruption causes a new PSW loaded from x'1D0' (Program Interruption FLIH). Now my question is what happens when a "PC" instruction is executed. Does a new PSW gets loaded from a pre-determined location (like SVC/program interrruption) or it's all handled through some micro code? -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: VTAM Cross domain
Sorry. Reply to receive all this interesting information. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: Read SMF 119 records
Thanks so much to all for your help and support :D Greetings. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Read SMF 119 records
Hello. 1. How can I read the SMF 119 records? 2. It is possible with a Rexx program, Cobol, Application or similar? I have not experience to use the SMF records. Please, if somebody have a program, utility or the necessary instructions for read the SMF records, could you send me a copy or explain it here, if that's not asking too much? Many thanks. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: Read SMF 119 records
I'm totally agree with all of you. Thank you very much to all for your support and answers. My interest on the SMF 119 record is because I need to know the maximum information of an OSA-Express3 Card. Also, I've used OSAENTA function (unfortunately we do not use SNMP by the system resource limitation). I see very interesting the Website (www.cbttape.org): - http://www.cbttape.org/cbtdowns.htm I will try the File #600: - File # 600 SMF Exit and Programs to process TCP/IP SMF records Any idea, suggestions or additional information would be very helpful. Greetings. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
