Enterprise COBOL Differences

Duration:   2 days

Participants:   Experienced COBOL programmers who are developing and maintaining Enterprise COBOL for z/OS or OS/390 application programs.

Objectives:   Upon successful completion of this course you will be able to: -  Use the newest features of Enterprise COBOL, COBOL for OS/390, and COBOL/370, except for OO programming. -  Code JCL compiler and run time options best suited to the program and operating system.

Overview:   -  Many new COBOL compilers have been released by IBM over the last two decades, and often, COBOL programmers do not know how to take advantage of new, time-saving coding features and expanded capabilities. Since COBOL II (released at the end of 1985), there has been COBOL/370 (now called COBOL for MVS and VM), COBOL for OS/390, and the latest, Enterprise COBOL for z/OS. This course includes most of the many new features of these compilers, as well as tips for writing efficient and maintainable COBOL code. Additionally, add-on products increasingly require COBOL programs be upgraded to z/OS COBOL. This course can fast-track developers involved in that process. -  This course has quite a bit of material. Students must already have a strong background in COBOL. All workshops are at the instructor’s discretion and will be assigned based on the experience level and needs of the participants. Sites wishing that all workshops be assigned should allow two (2) days for this course. - Separate courses are available for COBOL and VSAM, COBOL and DB2, COBOL and CICS, COBOL and IMS, COBOL and UNIX, COBOL Debugging, and z/OS Debug Tool for COBOL.

Prerequisites:   Programming experience in any version of COBOL, as well as knowledge of basic MVS JCL and ISPF, is required.

Format:   Lecture and discussion with hands-on computer workshops. Throughout the course, students perform many hands-on workshops and coding exercises to reinforce material presented in lectures. The student text includes many COBOL coding examples.

Topic Outline:   -  Enterprise COBOL Differences         Objectives         Names for COBOL         Enterprise COBOL and LE Manuals         New Compiler and Runtime         Enterprise COBOL Highlights         Enterprise COBOL Performance         Enterprise COBOL Changes         Enterprise COBOL Change Specifics         Removed / Different from COBOL II         Review: New in VS COBOL II         ANSI and ISO - Obsolete Elements         Enterprise COBOL Performance -  Data Definition Changes         USAGE IS Clause         Big Decimal Numbers - 31 Digits         Big Binary - Comp-5 and TRUNC(BIN)         TRUNC(BIN) and COMP-5         Change in 88 Behavior         Currency Signs         Currency Symbols -  Intrinsic Functions         Intrinsic Functions         Intrinsic Function (Categories / Types)         Intrinsic Function Arguments         Alphanumeric Functions         Numeric Functions         Integer Functions         National Functions         Intrinsic Function Examples         Using CURRENT-DATE Function         CURRENT-DATE Function Example         Integer Dates         Date Conversion Function Formats         Integer Date Function Examples         Date Subtraction Example         Get Current Julian Date Example         Arithmetic Functions         Numeric Intrinsic Function Example         FUNCTIONAL NUMVAL and NUMVAL-C         Simplifying Data Validation and De-edit         Integer Truncation Functions         Reference Modifiers and Functions         FUNCTION LENGTH vs LENGTH OF         Benefits and Disadvantages of Intrinsic Functions -  Advanced Table Handling         ALL Subscripting         ALL Subscript Example         SUM with ALL         FUNCTION MEDIAN Example         FUNCTIONs ORD, ORD-MIN, ORD-MAX         ORD-MAX, ORD-MIN Example         MEDIAN and SUM with ALL Example         Table Tips and Examples -  Compiler and LE RT Options         Enterprise COBOL Compiler Options         New Compiler Options to Enterprise COBOL         Compiler Options Added with IBM COBOL         CICS Compiler Option - New to Enterprise COBOL         DB2 without Precompile         Compile Parameter Changes         New DD Statements: COMPILE Step         JCL PARMS for LE and COBOL         LE Runtime Options since IBM COBOL         LE Options Reports         Storage and Addressability         Storage and Addressability: COMPILE         RENT - Reentrant Compiler Option         RMODE and RENT         Storage and Addressability: Runtime         DATA(31 | 24) Compiler Option and HEAP Runtime Option         Additional Features         Unicode and DB2 Enhancement         BootStrap and Mixed Language Levels         LE AMODE(31) Run-Time Options         LE AMODE(64) Run-Time Options (Not for COBOL) -  LE - Language Environment         LE Manuals         LE Callable Services Format         LE Condition Code Returned         Calling an LE Service Example         Some LE Callable Services         LE Callable Services - Date Handling         Date Service Notes         Focus on Some Key Date Services         LE CALLable Service Date Example         LE Date Subtraction Example         LE Sliding Century Window         Sliding Century Example         LE Date CALLs -  CALLing Subprogram         Call and Related Code         Review Traditional COBOL - Passing Data BY REFERENCE         Review Call…BY CONTENT (COBOL II)         Passing Data BY VALUE         Passing Data Example         Receiving Data in Subprogram         Test for OMITTED Arguments         Z – Null-Terminating Literals         Manipulating Null-Terminated String         RETURNING Phrase Example         Types of Pointers         CALL RETURNING Pointer Example         SET (Format #6) for Pointers         SET Pointer Rules         Which Pointer Type to Use         Nulls and Pointers         Program-ID Changes         Program Name Alert -  Error Handling and Recovery         Trapping Errors         Error Recovery         CALL Abend         Review: Error Handling Techniques         Review: Debug Compiler Options         Traditional Debugging Techniques         WITH DEBUGGING MODE Example         Declaratives Example         Handling Errors with LE         LE Condition Example - EXCOND, DIVZERO -  Debugging and Dump Reading         Common LE Terms         Abbreviated Terms         COBOL Program that Abended         CEEDUMP Example         Debug Tool - Version 3 Release 1         LookAt - Look Up Messages -  DFSMS Program Management Binder         z/OS         DFMS Program Management         Program Management         Binder Functionality -  DDLs - Dynamic Link Libraries         DLL Concept         DLL vs. Dynamically CALLed Load Module         DLL Preparation         Compile to Create a DLL         Linking DLLs         DLL Definition Side File         DLL Compile and Link Example         DLLs         COBOL DLLs and C/C++ Programs         Dynamic CALLs vs DLLs         DLL Names         Search ORDER for DLLs in HFS -  XML Parsing and Generation         XML Parsing         Well-Formed XML - Valid XML         Well-Formed XML Example         Not Well-Formed XML Example         Processing XML Events         XML PARSE Statement Example         XML-HANDLER Paragraph Example         XML-EVENT         XML-CODE         XML-TEXT         XML-NTEXT         Parsing Events         Converting XML to COBOL Data Items         Converting Strings to Numbers Example         Gotcha's         XML PARSE - Error Handling         Generating XML Documents from COBOL         Generating XML Output Example         XML Generation Tips         REPLACE Example         XML GENERATE - Error Handling         XML PARSE and DTDs and Schemas         XML GENERATE Alternatives -  Code Pages, CCSIDs, and Unicode         Code-page-sensitive Characters in XML         The Default Compiler CODEPAGE         Changing to CODEPAGE 1047         CODEPAGE(1140) Compiler Option         Conversion Image for COBOL         Unicode         Unicode Support         Unicode and DB2 Enhancement         COBOL Character Encoding Units         NSYMBOL (National / DBCS)         National (Unicode UTF-16) Version 3 Release 4 Improvements         DBCS Literals         SHIFT-OUT and SHIFT-IN -  OO COBOL, Java, Unix, and Multithreading         OO COBOL         OO COBOL Program Preparation         OO Syntax for Java Interoperation         OO COBOL for Java Interoperation         COBOL with HFS and Unix Support         cob2 and UNIX         cob2 to Compile under UNIX         New OO COBOL Features         OO COBOL Instructions         Class Definitions in COBOL         Define Instance Data in WS         Instance Methods         DATA DIVISION         Getter Method Example         Compiling OO Apps using JCL or TSO/E         Java Support         Sun's JVM vs IBM's VM         Multihreading Support         Multithreading and Multitasking         COBOL Java Interlanguage Interoperability         To Access JNI Services         COBOL and EJBs -  Enhanced DB2 and CICS Support         Additional CICS and DB2 Features         DB2 Coprocessor/SQL Compiler Option         Integrated CICS Translator         ANALYZE / ADATA with COBOL CICS / DB2         CICS Support for ACCEPT / DISPLAY         CICS CLER Transaction         JCICS -  Storage with LinkList Example         LinkList - Storage Example -  Compiler and Runtime Migration         Useful Book         Do I need to recompile?         RT (Runtime) Migration         Source Migration         Link-editing Requirements         Linking         Debug Tool, Version 3 Release 1         New Terminology with Version 3 Release 4         First - Inventory Your Applications         Migration Strategies         Migrating Old COBOL Code         Combining Old Code with Enterprise COBOL Programs         COBOL II RT Option Changes         LE Storage         STORAGE Values - Replace WSCLEAR with STORAGE         CMPR2 Compiler Option         CMPR2 Compile Option         VS COBOL II - CICS and RENT         NORES Compiler Option         DATA(31) Storage Allocation Changes         DIAGTRUNC Compiler Option         Migrating SORT / MERGE         Migrating SEARCH ALL to Version 3 Release 4         Abends are Different         Increased Data-item Sizes for Version 3 Release 4

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