This JCL defines an ALIAS in the current master catalog. The alias points to the user catalog named in the RELATE clause. Use a STEPCAT pointing to another master catalog when needed. //DEFCAT EXEC PGM=IDCAMS //* STEPCAT DD DISP=SHR etc when needed //SYSPRINT DD SYSOUT=* //SYSIN DD * DEF ALIAS (NAME(PROD) RELATE(SYS1.USERCAT.PROD)) /* // //Pierre G
I can not remember why I needed this assembler program - and why it is in assembler - but here it is: the program who’s sole function is to ABEND. ABENDIT CSECT EQUATES SAVE (14,12),,ABENDIT/SPDEPT/&SYSDATE/&SYSTIME/ USING ABENDIT,R11 SET UP BASE ADDRESSABILITY LR R11,R15 LOAD BASE REG WITH ENTRY POINT LA R14,SAVE GET ADDRESS OF REGISTER SAVE ST R13,4(0,R14) SAVE CALLER'S SAVE AREA ADDR ST R14,8(0,R13) SAVE MY SAVE AREA ADDRESS LR R13,R14 LOAD SAVE AREA ADDRESS * Business Logic ABEND 4321 * Epilogue RETURN EQU * L R13,4(R13) RETURN (14,12) RETURN TO CALLER LTORG SAVE DS 18F END ABENDIT // Bert Grobs
Regularly we need to compare local time to absolute time UTC (or GMT) programmatically. This can be done in various ways. The cleanest way is to use the static system symbols that z/OS defines. See also section "Static System Symbols" in the z/OS Initialization and Tuning Reference.You can easily use this in a Rexx program. For example: /* Rexx */ /* Display UTC Time elements */ say mvsvar('SYMDEF','HR') say mvsvar('SYMDEF','MIN') say mvsvar('SYMDEF','SEC') say mvsvar('SYMDEF','HHMMSS') say mvsvar('SYMDEF','LHHMMSS') It is also possible through Unix System Services date command to obtain UTC: date -u Wed Aug 21 15:20:42 GMT 2019 A more complex way (old fashioned) to achieve the same is addressing the CVT extension block: cvt = c2d(storage(d2x(16),4)) cvtext2 = c2d(storage(d2x(cvt + 328 ),4)) offset = ((c2d(storage(d2x(cvtext2+56+2),4))) * 16) /3600000000 timezone = "+0"||offset||"00" Thanks to Henk for the latter two solution alternatives. -- Niek de Greef
IBM provides the IBM Integration API, also known under the less accurate and descriptive name Configuration Manager Proxy (CPM), through which you can write your applications to control IBM Integration Bus components. The Java code below provices a working example of this API. The code presented revolves around a BrokerManager class. In the code below only one method on this class has been implemented, but it can easily be extended with other methods. The code uses a z/OS specific way to connect to a broker. On z/OS we do not connect through the network but locally. This needs a slightly different approach using the getLocalInstance method on the Broker Proxy API. The main() method in this sample implements the instantiation and invocation of the BrokerManager, implementing a command line solution, but the same code could be used in different contexts seamlessly. The documentation of the API can be found in the IBM Integration Bus Knowledge Center. Information for the App Connect enterprise version can be found through this link. I have not tried that version. package com.your.company.package.broker; import com.ibm.broker.config.proxy.AdministeredObject; import com.ibm.broker.config.proxy.AdministeredObjectListener; import com.ibm.broker.config.proxy.ApplicationProxy; import com.ibm.broker.config.proxy.AttributeConstants; import com.ibm.broker.config.proxy.BrokerConnectionParameters; import com.ibm.broker.config.proxy.BrokerProxy; import com.ibm.broker.config.proxy.CompletionCodeType; import com.ibm.broker.config.proxy.ConfigManagerProxyException; import com.ibm.broker.config.proxy.ConfigManagerProxyLoggedException; import com.ibm.broker.config.proxy.ConfigManagerProxyPropertyNotInitializedException; import com.ibm.broker.config.proxy.ExecutionGroupProxy; import com.ibm.broker.config.proxy.LogEntry; import com.ibm.broker.config.proxy.MQBrokerConnectionParameters; import com.ibm.broker.config.proxy.MQPropertyFileBrokerConnectionParameters; import com.ibm.broker.config.proxy.MessageFlowProxy; import com.ibm.mq.MQException; import java.util.Enumeration; public class BrokerManager { private BrokerProxy bp; private String bn; private String qm; private String hn; private int port; BrokerManager(String broker, String host, String qmgr, int port) { this.bn = broker; this.qm = qmgr; this.hn = host; this.port = port; System.out.println("Creating Broker Manager " + this.bn); } public boolean connect() { BrokerConnectionParameters bcp; boolean brokerIsResponding = false; // bcp = new MQBrokerConnectionParameters(this.hn, this.port, this.qm); // Not for z/OS // bcp = new MQBrokerConnectionParameters("", this.port, this.qm); but we will use // getLocalInstance for z/OS below try { this.bp = BrokerProxy.getLocalInstance(this.bn); // alternative this.bp = BrokerProxy.getInstance(bcp); // Ensure the broker is actually talking to us. brokerIsResponding = bp.hasBeenPopulatedByBroker(true); if (brokerIsResponding) { System.out.println("Broker" + this.hn + " broker " + this.bn + "is responding"); } else { System.err.println("Broker" + this.bn + "is not responding"); this.bp.disconnect(); this.bp = null; } } catch (ConfigManagerProxyLoggedException e) { System.err.println("Broker" + this.bn + " CONNECT failed" + e.toString()); } return brokerIsResponding; } public boolean setStartMode(String exg, String sm) { // Set startmode for all flows in given execution group // // AttributeConstants.STARTMODE_MAINTAINED which means at deploy time or // restart the message flow will start based on its isRunEnabled value. // AttributeConstants.STARTMODE_MANUAL which means at deploy time or // restart the message flow will be stopped. // AttributeConstants.STARTMODE_AUTOMATIC this.bp.setSynchronous(15000); boolean result = false; try { Enumeration<ExecutionGroupProxy> listEG = this.bp.getExecutionGroups(null); while (listEG.hasMoreElements()) { ExecutionGroupProxy eg = listEG.nextElement(); if (eg.getName().equalsIgnoreCase(exg)) { System.out.println("Connected to execution group " + exg ); Enumeration<MessageFlowProxy> listMsgFlow = eg.getMessageFlows(null); while (listMsgFlow.hasMoreElements()) { MessageFlowProxy flow = listMsgFlow.nextElement(); if (sm.equalsIgnoreCase("maintained")) { flow.setStartMode(AttributeConstants.STARTMODE_MAINTAINED); } else if (sm.equalsIgnoreCase("manual")) { flow.setStartMode(AttributeConstants.STARTMODE_MANUAL); } else if (sm.equalsIgnoreCase("automatic")) { flow.setStartMode(AttributeConstants.STARTMODE_AUTOMATIC); } System.out.println(flow.getName() + " startmode set to " + sm); } } } } catch (Exception e) { System.err.println("Error " + e.toString() +…
Introductory learning materials Start here: Here's What Happens When an 18 Year Old Buys a Mainframe. Great video. https://www.youtube.com/watch?v=45X4VP8CGtk&t=94s z/OS introductory video course http://www.redbooks.ibm.com/redbooks.nsf/redbookabstracts/crse0304.html?Open Master the Mainframe https://www.ibm.com/it-infrastructure/z/education/master-the-mainframe The ABCs of System Programming redbooks http://www.redbooks.ibm.com/abstracts/sg246981.html?Open IBM z/OS Basic Skills page in Knowledge Center. https://www.ibm.com/support/knowledgecenter/en/zosbasics/com.ibm.zos.zbasics/lcmain.html Introduction to the new mainframe http://www.redbooks.ibm.com/abstracts/sg246366.html?Open Introduction to CICS http://www.redbooks.ibm.com/abstracts/crse0303.html?Open Db2 DB2 for z/OS: Data Sharing in a Nutshell Mq on z/os concepts https://www.ibm.com/support/knowledgecenter/en/SSFKSJ_8.0.0/com.ibm.mq.pro.doc/q003590_.htm http://share.confex.com/data/handout/share/131/Session_23611_handout_11867_0.pdf RelevantZ site http://relevantz.ibmsystemsmag.com/ibm-systems-relevant-z IBM Z Youtube IBM Z YouTube channel Introduction to CICS from IBM http://www.redbooks.ibm.com/redbooks.nsf/redbookabstracts/crse0303.html?Open Introduction to the (new) mainframe) http://www.redbooks.ibm.com/abstracts/sg246366.html?Open Books (search for 2nd hand versions) Teach Yourself COBOL In 21 Days Murarch’s Mainframe COBOL Assembler training Assembler training IBM System z Tech IBM System z tech zone Love mainframe site https://lovemainframe.com/ Relevant Z http://relevantz.ibmsystemsmag.com/ Zowe https://www.openmainframeproject.org/ Free training offers IBM z/OS Introduction and Workshop for the IT Professional - 5 Day Edition (Next Offering: November 11th to 15th - USA CDT) https://www-01.ibm.com/events/wwe/ast/mtm/zlearn.nsf/enrollall?openform Free training at HPI https://open.hpi.de/courses/mainframes2018 Many tutorials on Mainframetechhelp https://www.mainframestechhelp.com/ Tutorialspoint on mainframe https://www.tutorialspoint.com/mainframe_tutorials.htm Mainframe Playground https://mainframeplayground.neocities.org/ JCL course https://www.tutorialspoint.com/jcl/jcl_job_statement.htm Free COBOL course from CSIS http://www.csis.ul.ie/cobol/course/ z/OS Introduction and Workshop http://dtsc.dfw.ibm.com/MVSDS/'HTTPD2.APPS.ZOSCLASS.SHTML(ZOSCLASS)' Mainframe playground on COBOL https://mainframeplayground.neocities.org/COBOL.html Access to real mainframe Community mainframe Unfortunately there is no Community open source mainframe yet. How cool would that be - a z/OS system on real Z hardware not owned by our boss. zD&T There is the emulator solution zD&T on which you can run z/OS legitimately. If you can afford it and like tinkering with an Intel machine an dLinux. IBM Z trials - only 3 days https://www.ibm.com/it-infrastructure/z/resources/trial Only available for 3 days Master the mainframe - free https://www.ibm.com/it-infrastructure/z/education/master-the-mainframe Remote development programme on Dallas System z When you have a software development company, or if you are rich. http://dtsc.dfw.ibm.com/MVSDS/'HTTPD2.ENROL.PUBLIC.SHTML(ZOSRDP)' Will start at something like $550 USD per month.
This one is untested since 1997. A little warning, though I believe it will still work. During a z/OS migration (probably still MVS/ESA or maybe OS/390) we needed to restructure the catalog layout. The client did not have a good catalog structure in place and almost everything had ended up in the master catalog. A small nightmare, especially for a smooth upgrade. BEtter worded: they made a mess of their catalogs. (The company does not exist anymore.) I created some custom programs to compare catalog contents with contents on disks. The job in CMPLCLVJ does the following: CMPLCLVJ Step INTRPOLD - Interpret an existing LISTCAT result for easier handling during the compare Step LIST: Create LISTVTOC of desired volumes Step INTRPLV - Interpret the LISTVTOC output for easier handling during the compare Step COMPLCLV - Compare the Listcat and LISTVTOC The following Rexx programs are used in this job: INTLISTC - interprets the LISTCAT output. INTLISTV - interprets the LISTVTOC results CMPLCLV - compares the interpreted (transformed) listcat and listvtoc results and reports the results. // Judd Froam
The problem were are solving here: You have 2 files, one has records (lines) with "key" values in the first word, the second has records (lines) "key" values in the second word. (A Word here is defined as a string delimited by blanks - similar to the definition in Rexx - See Rexx Reference) For all of the key entries in file1 you want to know if key entries exist in file2. If the key entry does not exist the record in file2 is written to the output file. The solution in Rexx below works as follows: Build a simple hash table of key entries in file1. For each record in file2, check if the key value has an entry in the hash table. If not, write the record to the outfile file. BTW in Rexx programs for files that are not excessively large, I have the habit of reading them fully into a stem variable before processing. Similarly I use a stem variable to capture the output data, and write that in one go after processing is complete. Not sure if that is a good habit, but it makes programming easy. /* Rexx */ trace off /* Fill InpRec1. and InpRec2. */ Call ReadInput /* Fill filter. */ Drop filter.Do N = 1 To InpRec1.0 entryname = Word(InpRec1.N,1) filter.entryname = 1 End /* Do */ /* Compare old file with new and write output */ Drop OutRec1.OutRec1.0 = 0 Do N = 1 To InpRec2.0 entryname = Word(InpRec2.N,2) If filter.entryname = 1 Then Do NOP /* This entry exists in both, that's ok */ Say 'To be skipped : ' entryname End Else Do /* Write this line, this entry has to be processed */ help = OutRec1.0 + 1 OutRec1.help = InpRec2.N OutRec1.0 = help End End /* Do */ Call WriteOutput Exit /*******************************************************************/ /* Routines ********************************************************/ /*******************************************************************/ /*******************************************************************/ ReadInput: Address Tso 'EXECIO * DISKR FILTER (Stem InpRec1. Finis' If RC <> 0 Then Do Say 'Error reading input file FILTER, Rc = ' RC Exit 69 End 'EXECIO * DISKR INPLIST (Stem InpRec2. Finis' If RC <> 0 Then Do Say 'Error reading input file INPLIST, Rc = ' RC Exit 69 End Return /* ReadInput */ /*******************************************************************/ WriteOutput: Address Tso 'EXECIO * DISKW OUTLIST (Stem OutRec1. Finis' If RC <> 0 Then Do Say 'Error writing output file OUTLIST, Rc = ' RC Exit 69 End Return /* WriteOutput */
This JCL script shows how to copy members from one PDS library to another. I have retained the input file being tape in the original JCL script for nostalgic reasons only; you will unlike ever use this nowadays. As unlikely, you will be allocating the output dataset on a specific volume, so normally you could omit the VOL=SER= clause as well. If you omit the S M= (SELECT MEMBER=) clauses, the entire content of the INDD input PDS will be copied to the OuTDD output PDS. //STEP01 EXEC PGM=IEBCOPY //SYSPRINT DD SYSOUT=* //*INDOC DD DISP=SHR,DSN=SYS1.ST006868.DOCLIB,LABEL=(06,SL), //* VOL=SER=R6868A,UNIT=CTAPE //INDOC DD DISP=SHR,DSN=YOUR.INPUT.LIBRARY //OUTDOC DD DISP=(NEW,CATLG,DELETE),DSN=YOUR.OUTPUT.PDSLIB, // VOL=SER=DASD1A,UNIT=SYSDA,SPACE=(9600,(240,30,20)) //SYSIN DD * COPY INDD=INDOC,OUTDD=OUTDOC S M=MEMBER1 S M=MEMBER2 S M=OTHERMEM S M=MEM4 THe IEBCOPY is a simple copy utility but it has many many options, of which you will only practically use a fraction. The application above I think is the one you will use in 99% of occasions. The DFDMDdfp Utilities manual sums all the options up.
This is a brief description of how to use the z/OSMF API with certificate authentication, from a PHP application. Create a certificate.For example with openSSL: openssl req -newkey rsa:2048 -nodes -keyout yourdomain.key -out yourdomain.csr Send the certificate to a certificate authority to get it signed. Add the signed certificate to RACF: RACDCERT CHECKCERT(CERT)RACDCERT ADD(CERT) TRUST WITHLABEL('yourlabel-client-ssl') ID(your RACF userID) SETROPTS REFRESH RACLIST(DIGTCERT, DIGTRING) When authentication, the userID in the ID field will be mapped to, and the z/OSMF tasks will run under this userID. Save the signed certificate on the PHP server in a directory accessible for the PHP server.The following PHP code will then issue a request with client certificate authentication: curl_setopt($curl, CURLOPT_SSLCERT, '/<server>/htdocs/<somesubdir>yourdomain.csr'); curl_setopt($curl, CURLOPT_SSLCERTTYPE, 'PEM'); curl_setopt($curl, CURLOPT_VERBOSE, 1); curl_setopt($curl, CURLOPT_HTTPHEADER, array( // this is the basic auth commented out: 'authorization: Basic ' . base64_encode($this->userid . ":" . $this->password), etc for the reast of the header
With this mini-tutorial you may get a quick start with COBOL on z/OS. It gives you a handson overview of the process to get a COBOL program running on z/OS. The tutorial will show you how to create a Hello World COBOL program on z/OS, compile it and then run in. You can find the program itseld and the JCL scripts for the compilation and run attached below to this post. The following video describes the process https://youtu.be/jLv4Wia-05M The following assets are used in this mini-tutorial. The Hello World COBOL program COBPROG The JCL to compile the program COBCOMP The JCL to run the program COBPROGJ /* Niek de Greef