Transcript IBM Brand Template

Course Objective
 This material is for anyone that is new to z/TPF or is looking for a refresher
about z/TPF.
 This is a technical course that primarily focuses on topics from a system
point of view.
 This course will generally cover most aspects of z/TPF and it’s environment.
Some topics will be covered in more detail.
 General background in Computer Science is needed to understand the
general computing concepts discussed in the material.
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TPF Agenda
1.
History
Hardware
Software
Supporting Systems
System
Characteristics
System Configuration
System Behavior
Database
Communications
Security
Console and
Monitoring
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System
Characteristics
Entry Control Block
Message Processing
Message Flow
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3
5
Database
Middleware
Security
Data Organization
MQ
Build Environment
Layout & Details
Web Services
MakeTPF / BuildTPF
Traditional z/TPF
Business Events
Development
z/TPFDF
WODM
z/TPF Toolkit
Memory
Configurations
Globals
Ported Software
z/TPF Debugger
Dispatching/CPU Loop
File Systems
Troubleshooting
Documentation
Main Storage
General Data Sets
Console Messages
InfoCenter
Program Linkage
z/TPFAR
Dumps
RedBooks
Loader
Utilities
Functional Displays
Support
System Tables
Performance/Tuning
SR Tool (PMR’s)
Communications
Data Collection
developerWorks
Console
Data Reduction
TPF Users Group
Network
Tivoli EndPoint
Manager
SNA
TCP/IP
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© 2013 IBM Corporation
z/TPF Detailed Summary - Basic Overview
History 
Hardware
Software
Supporting Systems
System Characteristics
System Configuration
System Behavior
Database
Communications
Security
Console and Monitoring
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© 2013 IBM Corporation
History
 Airlines Control Program (ACP)
– 60’s, 70s: ACP consolidated from several
individual efforts
– IBM also consolidated the application package
which became known as PARS and
International PARS (IPARS)
 Transaction Processing Facility (TPF)
– 70s, 80s: TPF 1 and subsequent versions
came after IBM had to unbundle (sell
separately) operating systems and HW
– 90s: TPF 4.1, virtual addressing, C/C++
support and more – Multiple CPU support
 z/Transaction Processing Facility (z/TPF)
– 2005: z/TPF 1.1 Introduced
• 64 bit, open development
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History – Compare and Contrast
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© 2013 IBM Corporation
Mainframe Operating System Heritage
 OS/360 -> OS/VS -> MVS/SP -> MVS/XA -> MVS/ESA -> OS/390 -> z/OS
– z/OS is IBM’s premier zSeries operating system, is a highly secure, scalable, highperformance enterprise operating system on which to build and deploy traditional and
Java-enabled applications, providing a comprehensive and diverse application execution
environment.
 DOS/360 -> DOS/VS -> VSE/SP -> VSE/ESA -> z/VSE
– VSE enables proven, robust, and cost-effective solutions. VSE provides sturdy batch and
industrial strength on-line transaction processing (CICS) capabilities. VSE can fit comfortably into
a legacy of thrifty, dependable VSE solutions.
 ACP -> TPF-> z/TPF
– TPF is the platform driving the business-critical systems for many of IBM's largest and
most sophisticated users of online transaction processing - airlines, railroads, hotels,
financial services, government, credit card and banking industries.
 CP/67 -> VM/370 -> VM/SP -> VM/XA -> VM/ESA -> z/VM
– z/VM provides a highly flexible test and production environment for enterprises deploying
the latest e-business solutions. z/VM helps enterprises meet their growing demands for
multi-user server solutions with support for a broad range of operating systems.
 Linux on System z
– IBM decided to support Linux in 2000.
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© 2013 IBM Corporation
z/TPF Detailed Summary – Basic Overview
History
Hardware 
Software
Supporting Systems
System Characteristics
System Configuration
System Behavior
Database
Communications
Security
Console and Monitoring
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© 2013 IBM Corporation
Hardware - Needed to run z/TPF
 System z Server
 Console to access the system
 Storage Devices
–Disk (DASD)
–Tape Drives and Tapes
Communication Card
–Open Systems Adapter (OSA)
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Hardware – System Z
 OS’s supported
–z/OS
–z/VM
–z/Linux
–z/VSE
–z/TPF
 Blade Center Extension
z/BX
 Power and X
–AIX
–Windows
–Linux
Source: If applicable, describe source origin
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IBM Presentation Template Full Version
Hardware – System Z (continued)
Capacity
– up to 101 Engines
– z/TPF up to 99
Engines
– 3TB memory per
server
Connectivity - Channels
FICON/ESCON
– Disk, Tapes, Console
Cards
– OSA, Crypto
RAS
 Reliability
 Availability
 Serviceability
Source: If applicable, describe source origin
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© 2013 IBM Corporation
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SE
SE
AIX
AIX
AIX
AIX
AIXAIX
AIX AIX
AIX AIX AIX
AIXAIX
AIX AIX
AIX AIX
AIXAIX
AIX
AIX
xHyp
xHyp
xHyp
xHyp
xHyp
pHyp
pHyp
pHyp
pHyp
pHyp
pHyp
pHyp
Z CPU, Memory and IO
z Blade Extension
z Blade Extension
Cell
DWA
Data Power
DWA
Linux
x86
ISS
ISS
DP
DP
Cell
Linux
Linux
Linux
Linux
Linux
Linux
Windows
Linux
Linux
Linux
Linux
Linux
Linux
Linux
Linux
PR/SM
zHypervisors
Linux
Linux
zOS
Virtual Machine
Machine
Virtual z/TPF
zOS
Virtual Machine
Virtual Machine
zOS
Virtual Machine
zOS
HMC (with Unified Resource Management)
Hardware – Diagram of System Z usage
Workload Resource Groups: SLA Mgmt and Reporting
Power
AMM
AMM
AMM
z Blade Extension
© 2013 IBM Corporation
Hardware – Console
TPF Operation Server
Provides:
•Console Access
•Automation
•Monitoring
•WinTel Hardware
•Windows OS
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© 2013 IBM Corporation
z/TPF Detailed Summary - Basic Overview
History
Hardware
Software 
Supporting Systems
System Characteristics
System Configuration
System Behavior
Database
Communications
Security
Console and Monitoring
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© 2013 IBM Corporation
Software
 z/TPF is an Operating System
 Runs exclusively on IBM System z hardware
 High Performance, eXtreme Transaction Processing (XTP)
 Dynamic, Large Centralized System
 Remote Users accessing Shared Information
 Attributes
– Speed
• Efficient processing of transactions
– Reliability
• Hardware and Software provide minimal downtime
– Availability
• 24x7x365
– Scalability
• 99 I-Streams in each server
• 32 way loosely coupled servers
• Choose your combination
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© 2013 IBM Corporation
Software – What z/TPF Provides
 z/TPF Operating System
– Directly controls the management of the
hardware resources assigned to the
central processing complex (CPC)
– Provides system services
• Macros and Functions
• Interfaces for Applications via API’s
– Interfaces with Communication
Networks, Disk, Tape, Console, and
other attached devices
– Data Collections provide overall
utilization and performance
Image – http://en.wikipedia.org/wiki/File:Operating_system_placement.svg
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© 2013 IBM Corporation
Software – z/TPF Highlights
 Efficient use of resources, such as main storage and file storage
 Short path lengths for critical system services, such as direct access
storage device (DASD) input/output (I/O)
 Short Existence Time for messages/transactions
– < .3 seconds
 Fast Restart and Recovery – 30 seconds to 2 minutes
 Entry Protection – each entry only knows about it’s resources
 Open-ended capacity growth, such as clustering as many as 32
multiprocessor Enterprise Systems Architecture (ESA) configurations with
only a minimal increase in system overhead
 Expandable database capacity by the addition of direct access storage
devices (DASD)
 Database integrity and online database maintenance capability.
 Reentrant code … i.e. sharable
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Software – Control Program
 Also Known As: Control Program, CP, Kernel, CPS0
 About 3.5 Meg in size
Memory
 Memory Resident
 Written in Assembler
 Dispatch Control (CPU LOOP) aka dispatcher
 Channel Programs/Drivers
– Efficient
– Hardware Specific
 Memory/Storage Management
 Linkage
– CSECTS linked together make up CPS0
– Built as part of System Initialization (SIP)
 Most of the Source Code is Available for Modifications
Control Program
 User Exits
 More details in System Characteristics part of course
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Software – Shared Objects / Programs
Note: Core resident = Memory resident
Memory
Disk/DASD
Core Resident
Program Area
 Any software that is not part of the CP is
a Shared Object (SO) that can be preloaded in memory or loaded when initially
called for use.
Control Program
 SO’s are written in:
– Assembler
– C/C++
 SO’s can be z/TPF System Software or
Application Software
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Software – Middleware Layer
 Provides z/TPF services for applications.
 Includes communications, database managers, transaction
services, API’s, etc
 For example – z/TPF supports
–MQ (Turbo) and Client
–Web Services:XML, SOAP,WS-Security
–Mail Server
–HTTP Server and Client
–TPFDF
–Tivoli Endpoint Manager
–WebSphere Operational Decision Management (WDOM)
–Business Events
–Transaction Services
–Ported services: Apache, OpenLDAP, MySQL, OpenSSL,
zlib
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Software – Application Layer
 z/TPF applications are customized and maintained by the
customer
–Pros
• Unique applications to the industry
• Customer controls features and functions
• Customization provides specific functionality compared to
of-the-shelf Application
–Cons
• Maintenance
• Adding Feature/Functions
• Available Subject Matter Experts
 z/TPF provides standardized system services, middleware,
and application frameworks to modernize established
applications as well as create new applications.
 Applications can be written in languages:
–Assembler, C, C++
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© 2013 IBM Corporation
Software - z/TPF Directory Structure of Software
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© 2013 IBM Corporation
IBM Presentation Template Full Version
Software – Comparing z/TPF to other Transaction OS’s
 Most other Transaction Processing models run on top of an operating system
===> are not as efficient as a native operating system like z/TPF
Memory Based solutions
 Transactional speed achieved by in-memory tables
– Capturing changes to memory database is problematic
Distributed Based solutions
– Transactional speed achieved by multiple images/servers
• Syncing the distributed database is inefficient
 Heavy-weight vs Light-weight process model
– z/TPF processes run on a CP or Kernel level compared to processes run
on an application level.
• This minimizes instruction length of processes
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© 2013 IBM Corporation
z/TPF Detailed Summary - Basic Overview
History
Hardware
Software
Supporting Systems 
System Characteristics
System Configuration
System Behavior
Database
Communications
Security
Console and Monitoring
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© 2013 IBM Corporation
Software - Supporting Systems
z/TPF
depends on other systems to:
-build the z/TPF configuration,
-build z/TPF software,
-run off-line batch jobs,
-connect primary console, and
-provide tools for testing, performance and debugging.
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
z/OS
– Format DASD Environment
– Create System Initialization Environment
– Run batch oriented tasks e.g analysis
– Access to General Data Sets

z/Linux
– Used to build z/TPF object code
– Create Loader components
– Other Utilities
© 2013 IBM Corporation
Software - Supporting Systems (cont)
z/TPF depends on other systems to:
-build the z/TPF configuration,
-build z/TPF software,
-run off-line batch jobs,
-connect primary console, and
-provide tools for testing, performance and debugging.
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
VM
– Can be used as main operating system with z/TPF as a guest

TPF Toolkit (Eclipse based)
– Recommended Integrated Development Environment

TPF Operation System (PC based)
– Recommended Operational Console Management environment

Tivoli EndPoint Manager
– Recommended continuous data collection environment
© 2013 IBM Corporation
Software - z/TPF still uses z/OS for…
 Assemble, compile, link of all z/OS offline programs
– DASD Formatter
– Data Reduction
– Dump Post Processor
– And others…
 Loading Software
– Loader General File (LGF)
– Via GDS, TAPE/VTAPE, VRDR
 Requirements
– IBM z/OS Version 1 Release 3, or later release
– High Level Assembler (HLASM) Release 5 or later
– IBM Enterprise PL/I for z/OS Version 3 Release 3, or later release
– GNU Make (3.79.1)
* For current versions refer to “Required z/OS Software” in latest z/TPF
documentation
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Software - z/TPF uses Linux for…
 Building Software
– Linux utility programs
– SIP deck assembly (System configuration macros)
– Face table generation (File format)
– Assemble, compile, link of all online programs
– Assemble, compile, link of all Linux offline programs
 Build Software Modules for Installation
– BuildTPF, LoadTPF
 Load Software
– OLDR loads (via FTP) to z/TPF
 Access to source code
– Source Contol Manager (SCM) integration
– Hosts source code for z/OS and Windows
– Editing of source code
 Running Utilities, Editing, Troubleshooting, Etc
For current versions refer to “Required Linux Software” in latest z/TPF
documentation
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© 2013 IBM Corporation
Software - z/TPF still uses VM for…
 Ease of Use
–Configuration changes
–Virtual Tape Drives
 Multiple Images of z/TPF for testing
–Can create smaller test systems
 CMS
 PER Trace (Event recording)
 VTAPE (Virtual tapes)
 VPARS (Share a TPF image on mult VMs for testing)
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© 2013 IBM Corporation
Software - z/TPF still uses TPF Toolkit for..
 Integrated Development Environment(IDE)
 Debugger
 Performance Analyzer
 Interface to Source Control Manager (SCM)
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Software - z/TPF still uses Tivoli Endpoint Management
 Continuous Data Collection
 Integration with Enterprise Monitoring
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© 2013 IBM Corporation
Software - z/TPF still uses TPF Operations Server for…
 Console Access
 Automation
 Logging of output
 Interface to other Enterprise systems
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© 2013 IBM Corporation
Software – Diagram of Supporting Systems
BuildEnvironment:
What'sit looklike?
Extract
Linuxfor
zSeries
z/OS®
offline
support
programs
e-type
loader
HFS
3
FTP
Loadsets
®
z/VM
and
z/TPF
Check-in
Check-out
Network
Access
offline
executables
source
control
system
buildtools
sourcefiles
online
executables
Rexec
Workstation
Network
Access
© 2013 IBM Corporation
IBM Presentation Template Full Version
z/TPF Detailed Summary - Basic Overview
History
Hardware
Software
Supporting Systems
System Characteristics 
System Configuration
System Behavior
Database
Communications
Security
Console and Monitoring
Source: If applicable, describe source origin
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© 2013 IBM Corporation
z/TPF Security Features
System Characteristics - Entry Control Block (ECB)
“Start a Process”
Input Message
Control
Program
Entry Control Block (ECB)
“End a Process”
Output Message
“Interacts with..”
Shared
Object(s)
Shared
Object(s)
CPU(s)
“Interacts with..”
Memory/Disk
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© 2013 IBM Corporation
IBM Presentation Template Full Version
System Characteristics – Application Transaction
 A message is a component of a transaction in z/TPF.
- The number of messages to complete a transaction depends upon the
application design
 The time required is dependent upon the speed of the end user and the
complexity of the transaction.
 z/TPF is designed on the assumption that each end user message require
only small amounts of CPU processing.
 A transaction consists of one or more messages.
 Example of a transaction
– A13JULSLCJFK7P
• Availability entry requesting flights from Salt Lake City to New York
beginning at 1900 on July 13th
– N1Y2
• Need one seat in Coach Class from the display which is on line 2
– -lastname/firstname
Source: If applicable, describe source origin
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IBM Presentation Template Full Version
System Characteristics – Application Transaction Examples
 An example of a transaction
– A13JULSLCJFK7P
• Availability entry requesting flights from Salt Lake City to New York beginning
at 1900(7PM) on July 13th
– N1Y2
• Need one seat in Coach Class from the display which is on line 2
– -lastname/firstname
 An example of Web Service Transaction
– XML Request
Source: If applicable, describe source origin
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© 2013 IBM Corporation
System Characteristics - Main Supervisor (Control Program)
 The principal functions performed by the main supervisor are:
– Work scheduling – dispatching
• Priority List scheme: Ready, Input, Defer, suspend lists (queues)
• Dispatch all tasks on the list before move to the next list
– I/O interface
• No ‘access method’, channel program is integrated into system
support
– Virtual address space memory management
• EVA (Primary address space) or (ECB Virtual Address)
vs. SVA (Home address space) or (System Virtual Address)
– Storage management
– Interrupt processing
• I/O, SVC, Program, External,
– Keypointing (aka checkpointing)
• Save system status in case of restart because of a hardware or
software malfunction. In other operating systems, this usually is
called
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© 2013 IBM Corporation
System Characteristics - Memory
 Fencing of Data
– An ECB’s memory is not addressable by another ECB
• This includes memory requested by the application
– Some memory can be shared via:
• Global memory
• Common
 Virtual Memory
– Memory get backed with real memory when needed
– System Virtual Memory (SVM)
– ECB Virtual Memory (EVM)
 Protection keys
• Applications cannot write to system memory without special
access
- restricted macros and API’s
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© 2013 IBM Corporation
Memory Layout
EVM vs SVM
0
Common Virtual Addresses
Prefix Area
Control Program
16MB
IPLB/CCIO/Keypoints/CIMR
31-bit System Tables
SVA Differences
EVA Differences
31-bit User Areas*
31-bit CRPA*
-----Copy-on-Write
Common Blocks
IOBs
ECB Private Area
SWBs
Thread Stack Area*
ECBs
Application/ECB Stack Area*
4K Frames
Pre-allocated ECB Stack
31-bit System Heap*
2GB
4GB
64 bit CRPA (PJ37995)
Pre-allocated 31-bit ECB Heap
31-bit ECB Heap*
Region/Segment/Page Tables
64-bit System Tables
TCP/IP Areas*
64-bit User Areas*
64-bit CRPA*
1MB Frames
-----Copy-on-Write
64-bit ECB Heap*
System Heap Control*
64-bit System Heap*
Highest SVA
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VFA
© 2013 IBM Corporation
z/TPF Characteristics - Disk
 Data defined as modules
 Data is spread out across modules
– A database is spread out over multiple modules to minimize
highly accessed data (avoid “hot” spots"
 Modules duplicated logically in modules and physically on hardware
– Prime
– Dupes
Data reads from quickest path available
 Data writes duplicated
 Virtual File Access (VFA)
– Data reads in memory for faster access
– Data writes in memory and physical file (write thru)
– Highly accessed data stays in memory
– Low utilized data bubbles out of memory
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© 2013 IBM Corporation
z/TPF Characteristics - Tape
 Tapes defined as individual devices that are accessible via Tape
API’s
 Primary and Alternates defined
– If a tape becomes full will switch to Alternate
– If z/TPF cannot write to a tape it tries on the Alternate
 Application and System Errors are written to tape
– Data can be post processed to produce a dump report
 Dump Buffer Area
– A defined area in memory to quickly write out the error so that the
snap shot time is minimized
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© 2013 IBM Corporation
z/TPF Characteristics – Loading Software
 New software is loaded to z/TPF using:
–General File Loader
–E-type Loader
–Image Loader
–Data Loader
 z/TPF has the ability to introduce new real-time software while
running transactions
–ZOLDR Functional Message
–Activation number
–Software bundled in loadsets
• Activated/Deactivated
• Accepted/Deleted
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© 2013 IBM Corporation
z/TPF Detailed Summary - Basic Overview
History
Hardware
Software
Supporting Systems
System Characteristics
System Configuration 
System Behavior
Database
Communications
Security
Console and Monitoring
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© 2013 IBM Corporation
System Configurations
 Uni Configuration
– Single CPU
 Tightly Coupled Configuration
– Multiple CPU’s (Instruction Streams) Sharing Memory
– Single Copy TPF Executing Concurrently
 Loosely Coupled Configuration
– Two or more CPC sharing a common set of DASD (Database)
and using an external lock facility (XLF) to synchronize multiple
access to the DASD records.
– Each CPC can be Tightly Coupled or in uni-processor mode
– Each CPC runs a copy of TPF concurrently
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© 2013 IBM Corporation
System Configuration - Uni Environment
Network
System Z LPAR
Only one I-stream
used in Uni system
Up to 99 I-Streams
DASD
Online Programs
Control Program
z/TPF
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© 2013 IBM Corporation
System Configuration - Tightly Coupled
Network
System Z LPAR
Up to 99 I-Streams
DASD
Online Programs
Control Program
z/TPF
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© 2013 IBM Corporation
System Configuration - Loosely Coupled Environment
Network
System Z LPAR
System Z LPAR
Up to 99 I-Streams
Online Programs
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Up to 99 I-Streams
DASD
Online Programs
Control Program
Control Program
z/TPF
z/TPF
© 2013 IBM Corporation
z/TPF Detailed Summary - Basic Overview
History
Hardware
Software
Supporting Systems
System Characteristics
System Configuration
System Behavior 
Database
Communications
Security
Console and Monitoring
4
© 2013 IBM Corporation
System Behavior - Initial Program Load (IPL)
 Initial IPL - IPL From Loader General File (LGF)
– The Loader General File is a disk module
>contains programs and keypoints
>used to initialize a system.
>sequential collection of records
>created offline under z/OS control.
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© 2013 IBM Corporation
System Behavior - Initial Program Load (IPL)
– The TPF system is loaded to the online system in 2 steps:
1. The online keypoints, the file resident and main storage
resident program segments:
are loaded to the loader general file by the system loader
offline (ALDR).
1. They are then
loaded from the loader general file to the online files by
IPLing the loader general file. (ACPL)
– The TPF system is started by IPLing the prime (or backup)
online system pack.
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© 2013 IBM Corporation
System Behavior - Restart IPL
 Any IPL After Initial IPL
 Hard IPL
–Initiated from the HMC (Hardware Console)
–Operator is given the opportunity to select a TPF image
(a composite of control program and applications)
–It is disruptive – users will be affected.
 Soft IPL
–Initiated by ZRIPL or
–Automatic Recovery After Failure (catastrophic error)
• Preserves Previous State
• Attempts 3 times within 5 minutes
 ZRIPL for test systems. Check about usage in production environment????
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© 2013 IBM Corporation
System Behavior - IPL Actions
 Whenever you restart the control program
–an initial copy of the control program is loaded from file to main
storage
–the keypoint records are then loaded from the IPL file and are
used to initialize various fields and tables in main storage
–all working memory is initialized with all main memory blocks on
the uncommitted memory lists
–during initialization, a check is performed to determine whether a
dump tape is mounted and ready. If one is not mounted, you are
notified and no more action occurs until the you mount a tape.
When initialization is completed, the following message is
displayed on the system console:
CVRN0004I hh.mm.ss RESTART COMPLETED- 1052 STATE
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© 2013 IBM Corporation
System Behavior - System States
z/TPF has different states that can restrict or limit certain
activity
1052 State- Commands only accepted from the system
console or 3270 local
UTIL State- Commands only from valid CRAS terminals
CRAS State- All terminals, are allowed to log on to the z/TPF
system applications. However, non-CRAS authorized terminals
have their application access restricted
Message Switching State-All lines are active.
The only high-speed messages accepted in the system are
messages with a primary action code of Y, Z, or O.
NORMal State- NORM state allows you to start all system and
application functions. All entries are allowed.
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© 2013 IBM Corporation
System Behavior - Errors that TPF handles
 Hardware malfunctions that are overcome by retrying the
I/O operation.
– Error statistics are recorded
 An error detected by the system from which the programs
related to an ECB may be able to recover.
– program regains control (for example, a record identification
check).
 An error detected by the system from which the Entry
cannot recover.
– The ECB is forced to exit
 An error detected by the system that makes continued
operation of the system inadvisable. This is called a
catastrophic error.
– The system may needs to be restart.
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© 2013 IBM Corporation
System Behavior - Types of Dumps
 SNAP Dump
 SERRC Dump
– Application Dump
– System Dump
 Dumps are written to tape
– RTA/RTL
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© 2013 IBM Corporation
z/TPF Detailed Summary - Basic Overview
History
Hardware
Software
Supporting Systems
System Characteristics
System Configuration
System Behavior
Database 
Communications
Security
Console and Monitoring
5
© 2013 IBM Corporation
Physical Database – Direct Access Storage Device (DASD)
 IBM Physical disk Drives
 Prime Modules and Duplicate of Prime Modules
–Read from least busy
–Write to both Prime and Dupe
–System can survive with one module, either prime or dupe
–Prime and Dupe never on same Control Unit
• Prevents bottlenecks
• Prevents single point of failure
 DASD limit is 40,000 logical volumes, and up to 65520 cylinder in each
volume
–65520 cylinders/mod * 15 tracks/cylinder * 12 4K records/track *
4095 bytes/record = 48.2 GB per module
–48.2 GB * 19,999 module (prime + dup) = 962 TB
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© 2013 IBM Corporation
z/TPF Databases
 Storage Based i.e. disks
 Memory Based
 Globals
 Fixed File
 Pool
 TPFDF
 TPFCS
 File Systems
–TFS
–FFS
–PFS
–MFS
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z/TPF Database Maintenance
 Resources given back by application – appl code releases
 Resources given back when an Entry exits – entry exits
 Recoup – Pool storage
–Garbage Collection
–Usually run weekly
–Short Term and Long Term addresses returned to the
system
 Capture and Restore - return to point in time- then add
changes (play log)
–z/TPF has package
–Most DASD has external functionality to capture a “point in
time”
–Exception recording on tapes used for time gap
 Online Database Reorganization
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z/TPF Detailed Summary - Basic Overview
History
Hardware
Software
Supporting Systems
System Characteristics
System Configuration
System Behavior
Database
Communications 
Console and Monitoring
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z/TPF Communications - Overview
Communications that z/TPF Supports
 3215 / 3270
–OSA Integrated Console Controller (OSA-ICC)
–Used for console support for TPF Operations Server (TOS)
–Also can be attached via ESCON and Controller Unit (Vendor)
 System Network Architecture (SNA)
–3745 Network Control Program
–Channel to Channel (CTC)
 TCP/IP
–Via OSA Express Card
 Others - e.g. industry protocols (AirInc)
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z/TPF Communications – TCP/IP Diagram
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z/TPF Communications - Internet Daemon
 Internet Daemon Model
– Similar to other platforms like Unix and Linux
– A ‘listener’ is started to accept TCP/IP requests coming
from a specific port address and IP address
– Long running process
– A ‘monitor’ also runs validating that ‘listeners’ are running
and for error recovery
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z/TPF Communications - Example of Internet Daemon – specific IP
addresses&Ports----or any port
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z/TPF Communications – Socket Based API
 Standard Socket API’s
–Bridge TCP/IP protocol layer to the Application layer
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z/TPF Detailed Summary - Basic Overview
History
Hardware
Software
Supporting Systems
System Characteristics
System Configuration
System Behavior
Database
Communications
Security 
Console and Monitoring
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Security – z/TPF Basics
 Hardware Support
–Cryptographic Cards on Server and CPACF - (encryption
hardware assist)
–TPF Operations Server
 Software Support
–OpenSSL
–Non Displayable Memory
 Datacenter Access
 Minimum User Access
 Within the Enterprise
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Security - OS Common Problems
Everyone is concerned about sensitive and confidential information being
generally available or exposed due to a security hole
 Security Breaches
– SpyWare
• Can this run on z/TPF?
– Unauthorized access
• Can an unauthorized user get into z/TPF?
• If so – what can be done?
– Authorized exploitation
• User has access but can exploit other information
– Open TCP/IP Ports
• Only ports actively listened for can be accessed
 Buffer Overflow
– z/TPF ‘fences’ process space
• EVM vs SVM
 Denial of Service Requests
• Disable access by overloading communication to OS
• Refer to TPFUG presentation
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z/TPF Detailed Summary - Basic Overview
History
Hardware
Software
Supporting Systems
System Characteristics
System Configuration
System Behavior
Database
Communications
Security
Console and Monitoring 
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Consoles
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
Operator Consoles have access to administer the z/TPF system

Hardware consoles can administer control of hardware functions
– Hardware IPL
– Changing Hardware settings

Software consoles can administer the z/TPF OS via functional messages
– Available via TPF Operations Server (TOS)
– CRAS terminal - Computer Room Agent Set (travel agent)
– Prime CRAS – entries can be restricted to a specific terminal or Prime
Terminal which has special authority to specific commands
– RO CRAS – read only version of CRAS
– Functional Console Support - CRAS terminals designated to receive
messages related to a specific function; sometimes called a functional
CRAS console. For example, all TAPE related messages can be
routed to a TAPE Functional Console.
– Remote Console Support – CRAS terminals designated to operate the
TPF system from a remote location. Useful for Disaster Recovery.
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The z/TPF Console Log
The z/TPF Console Log reports ongoing system activity
 Output sent to System Operator
– Prime Computer Room Agent Set (Prime CRAS)
 z/TPF System documented Messages
– Output categorized by a header that can be referenced
• Available in the Messages section in the TPF documentation
 z/TPF Applications
– User applications usually report status, start/end, etc by sending output to
Prime CRAS
 Example:
IPLB0045I
IPLB0044I
TPF CPU ID B OPERATION TO BE CONTINUED ON_
PROCESSOR FF02153F MODEL 2094 CPA 0000
+
TPF CPU ID B COUPLING PROCEEDING ON _
PROCESSOR FF02153F MODEL 2094 CPA 0000+
 Console log saved using TOS functionality (TOS = TPF operations server)
– Ability to send to another environment (for example, VM)
– Ability to access via TOS
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z/TPF Basic Overview – Terms and Definitions
 TPF is short for Transaction Processing Facility
 XTP is short for eXtreme Transaction Processing
 Control Program refers to CP or Kernel
 Logical Partition is also known as LPAR
 OS is short for Operating System
 Direct Access Storage Device is also known as DASD
 A Transaction consists of one or more messages
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