Alle Pakete

The online spine: what CICS is, the transaction/task/TRANSID model, the EXEC CICS command level, program control (LINK/XCTL/RETURN), pseudo-conversational design, COMMAREA and channels/containers, BMS maps, file control over VSAM, TS/TD queues, RESP/RESP2 handling, the EIB, SYNCPOINT/ROLLBACK, ENQ/DEQ, START/RETRIEVE, time services, and ABEND handling.

The language of business batch: the four divisions, PIC clauses and level numbers, WORKING-STORAGE, MOVE/COMPUTE, PERFORM, IF/EVALUATE, 88-level condition names, file I/O, tables (OCCURS), COMP-3, copybooks, and reading a S0C7.

The relational data path: embedded SQL and host variables, the SQLCA and SQLCODE, singleton SELECT, cursors, INSERT/UPDATE/DELETE, unit of work, the precompile→DBRM→BIND lifecycle, plan vs package, indexes, isolation levels and locking, NULL indicators, joins, DCLGEN, and the SQLCODEs you actually hit.

The batch gateway: JOB/EXEC/DD, DISP, datasets and SPACE/DCB, concatenation, GDGs, COND vs IF/THEN, procedures, and the everyday utilities (IEFBR14, IDCAMS, IEBGENER, SORT).

Automate z/OS with REXX: the language basics, PARSE and PULL, arithmetic and strings, DO loops and SELECT, built-in and user functions, stem (compound) variables, ADDRESS for TSO/ISPF/host commands, RC and error handling, TRACE, the data stack, and EXECIO for dataset I/O.

Live in the mainframe workbench: the TSO READY prompt and core commands, the ISPF menu and editor, line and primary edit commands, the Data Set List Utility (3.4), allocate/move/copy, member lists, split screen, PF keys, SDSF, and search-for.

The mainframe's high-performance record access: KSDS/ESDS/RRDS/LDS, the cluster's index and data components, control intervals and areas, IDCAMS DEFINE, alternate indexes and paths, REPRO/PRINT/LISTCAT, CI/CA splits and FREESPACE, buffering, share options, and reorg.

The free on-ramp to the mainframe: what z/OS, LPARs, datasets, JCL, TSO/ISPF, batch vs. online, COBOL, CICS, and Db2 actually are.