Azerbaycan z/OS System Anatomy Part 2 - z/OS Infrastructure & Services Eğitimi

• describe the functions of MVS and JES2
• use GRS effectively
• exploit program management
• explain how the dispatcher works
• describe Cross Memory Services (XMS) and how it works
• install user SVCs
• describe how MVS invokes recovery and when to use ESTAE routines
• explain how WLM works to manage z/OS resources
• design and setup the DASD subsystem
• isolate I/O problems.

Job processing; SSI; input phase; internal readers; initiators; SWA control blocks; ENQs; allocation; PPT; job termination; output phase.

Why Subsystem Interface?; SSI - a universal tool; The Master Subsystem (MSTR); ES services via SSI; Establishing a subsystem; Defining the subsystem to MVS; Setting up SSI; Starting a subsystem; Initialising a subsystem; Asking for subsystem service; SSI at work...; Dynamic SSI; Chapter Review; Subsystem Lab.

Resource serialization and how it is accomplished through the use of ENQ/DEQ sequences; shared DASD; GRS & Sysplex; locking; lock categories; SETLOCK, SPIN & SUSPEND; lock manager processing.

The search sequence used by the program manager when attempting to load a module; performance and load module integrity issues; using LOAD; LINK; XCTL; Linkage Stack; control blocks; JOBLIB/STEPLIB.

Units of work- SRBs & TCBs; dispatching sequence; address space structure; ASCB/ASXB contents; TCB contents.

Hiperspaces; data spaces; cross memory services; service request blocks (SRBs); the cross-system coupling facility (XCF).

Installing SVC routines in an MVS system; SVC types; SVC FLIH; status saving; SVC coding conventions; SVCUPDTE facility.

Recovery routines available to user programs and the Recovery Termination Manager; RMS; program termination types; ESPIE; ESTAE; FRR routines.

WLM's purpose; WLM's tools; compatibility mode; dispatching priorities; storage isolation; logical swapping; user & system think times; goal mode implications; classification rules; response time goals; velocity goals; discretionary goals.

Track formats; CKD format; RPS; VTOCs; DSCB types; VTOC Index; VTOC listing; Catalogs; opening data sets; SMS.

Access methods; DCB concepts; OPEN & TIOT; DEB; DCB merge; open processing; channel programs; ECBs & IOBs; EXCP; QSAM; synchronising the I/O; analysing completed I/O; close processing.

IOS; IOS drivers & components; building an IOQ; building an ORB; CSS at work; I/O interrupt handler; post status; VSAM; control intervals; linear data sets; PDSEs; the ACB; open processing; Get & Put; VSAM control blocks.