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CICS TS (Transaction Server) Programming
| Duration: 5 days |
| Participants: Application programmers and developers. |
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Objectives:
Upon successful completion of this course you will be able to:
- Design, code, and execute COBOL CICS TS programs that use full screen I/O (send and receive mapsets) and process data. - Code BMS macros to create CICS screens for SEND and RECEIVE MAP commands. - Create and use maps for formatted screen input and output. - Understand and implement efficient programming techniques to minimize the use of CICS resources. - Use CICS commands and transactions to access and process VSAM files. - Interactively debug CICS programs using CEDF. - Use CEMT, CECI, and CEBR transactions within CICS. - Describe the new and enhanced features for COBOL TS and CICS/ESA programming. |
| Overview: This course teaches experienced application programmers and developers to code CICS TS (Transaction Server) commands within COBOL programs and to write the logic that supports pseudo-conversational, multi-module, online transaction applications. CICS with DB2 is an optional/additional day with this course. |
| Prerequisites: COBOL programming experience is required. No prior knowledge of CICS is assumed. |
| Format: Lecture and hands-on computer workshops. |
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Related Courses:
- SDF (1 day) - SDF II (1 day) - Advanced CICS Programming Topics (5 days) - Abend-AID for CICS (1 day) - Xpediter for CICS (1 day) - InterTest for CICS (1/2 day) - CICS with DB2 is an optional day with this course or with Advanced CICS. |
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Topic Outline:
- Introduction Batch vs online Processing differences Processing goals CICS Product description Environment CICS Regions Product components CICS tables Programming impact Menu programs Access programs Update programs Maintenance programs Program preparation Precompile process Compile requirements Link requirements NEWCOPY in CICS Running an online transaction - Pseudo Conversational Programming Contrast with Conversational programming Basic program structure and logic RETURN to stop program RETURN with TRANSID and COMMAREA - Terminal I/O Terminal control commands: SEND, RECEIVE Basic mapping support (BMS) Map creation Map transmission SEND MAP RECEIVE MAP Physical and symbolic maps Attention key usage HANDLE AID EIBAID COPY DFHAID Screen design BMS Macros DFHMSD DFHMDI DFHMFD JCL to generate physical and symbolic maps Attribute bytes Physical map Dynamically modifying in the symbolic map Cursor location Physical map Dynamically modifying in the symbolic map - CICS Error Handling HANDLE CONDITION Response code tests HANDLE ABEND ABEND - Pseudo-Conversational Programming Techniques Using EIBCALEN and DFHCOMMAREA Logic requirements First time logic Last time logic Normal logic Screen edit and save techniques - File Access for VSAM Random I/O READ, REWRITE, DELETE, and WRITE Browse mode STARTBR, READNEXT, READPREV ENDBR, RESETBR Locking UNLOCK Recoverable vs non-recoverable resources Service transactions CEMT I FILE CECI READ CRTE Tokens - Program Control Creating application systems with LINK and XCTL Using LOAD and RELEASE to access common tables CALLing subprograms RETURN with IMMEDIATE and TRANSID - Queues TS - Temporary Storage Concepts WRITEQ, READQ, DELETEQ TD - Transient Data Intrapartition vs extrapartition Trigger levels DCT entries WRITEQ, READQ, DELETEQ - Resource Usage GETMAIN and FREEMAIN Minimizing storage requirements by using LINKAGE SECTION and SET option Using ENQ and DEQ to gain exclusive control ASSIGNing system information Obtaining ADDRESSes CWA TWA TCTUA - Interval Control ASKTIME and FORMATTIME START tasks RETRIEVE and CANCEL POST WAIT SUSPEND DELAY - Recovery Features SYNCPOINT and SYNCPOINT ROLLBACK HANDLE ABEND Journals Protected resources and dynamic transaction backout Recovery and restart procedures - CICS and DB2 (Requires an extra day of class.) - CICS TS Feature Highlights Accessing transactions beyond the mainframe BTS (Business Transaction Services) EXCI - call batch programs from CICS OO for C++ interface 3270 Bridge program Java and VAJ front-ends |
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