Parallel Sysplex application considerations / [Jordi Alastrue i Soler ... et al.].

Format:

Book

Contributor:

Alastrué i Soler, Jordi.

International Business Machines Corporation. International Technical Support Organization.

Series:

IBM redbooks.

IBM redbooks

Language:

English

Subjects (All):

Parallel processing (Electronic computers).

Application software--Development.

Application software.

Computer architecture.

Physical Description:

xii, 190 p. : ill.

Edition:

1st ed.

Place of Publication:

Poughkeepsie, NY : IBM, International Technical Support Organization, c2004.

Language Note:

English

Contents:

Front cover

Contents

Notices

Trademarks

Preface

The team that wrote this redbook

Become a published author

Comments welcome

Chapter 1. Introduction to Parallel Sysplex

1.1 What is a sysplex?

1.1.1 Why use a sysplex?

1.2 Data sharing in a sysplex

1.3 Parallel processing in a sysplex

1.4 Managing work in a sysplex

Chapter 2. Application design

2.1 Applications in a sysplex

2.2 Enabling for continuous availability

2.2.1 Affinities

2.2.2 Locking

2.2.3 Batch window

2.2.4 Single points of failure

2.2.5 Performance

2.3 Step-wise deployment/versioning

2.4 Other considerations

2.4.1 Granularity, modularity, and generally reused modules

2.4.2 Fault tolerance

2.4.3 Debugging and tracing

2.4.4 Testing environment

Chapter 3. DB2 application considerations

3.1 Introduction to DB2 data sharing

3.1.1 Advantages of data sharing

3.1.2 How data sharing works

3.2 Application considerations for developers

3.2.1 Locking

3.2.2 Lock avoidance

3.2.3 Commit frequency

3.2.4 Locking recommendations

3.2.5 DB2 database design

3.2.6 Batch considerations

3.2.7 Managing commit frequency in batch

3.2.8 Distributed access to a data sharing group

3.2.9 Programming guidelines

3.2.10 Additional DB2 considerations

3.3 Application considerations for DB2 system administrators

3.3.1 BIND options

3.3.2 DDL options

3.3.3 DB2 installation options

3.3.4 Deadlock and time-out detection

3.3.5 Backup and recovery

3.4 Example application

3.4.1 Batch processing

3.4.2 Parallelizing sequential processes

3.4.3 Extraordinary processes

Chapter 4. DFSMStvs application considerations

4.1 Introduction to DFSMStvs

4.2 Batch application considerations

4.2.1 Unit of recovery

4.2.2 Sharing files in the batch job structure.

4.3 Transactional recovery

4.3.1 Using DFSMStvs: unique input

4.3.2 Using DFSMStvs: shared input

4.4 Programming changes

Chapter 5. CICS application considerations

5.1 Introduction to CICS TS

5.2 How to exploit sysplex in CICS TS applications

5.2.1 Affinities through use of CICS commands

5.2.2 CICS Transaction Affinities Utility

5.2.3 Programing facilities and techniques and their implications on affinities

5.2.4 Affinity summary

5.2.5 What happens if you have to create an affinity?

5.3 CICS TS application checklist

Chapter 6. IMS application considerations

6.1 IMS Transaction Manager overview

6.1.1 IMS basics

6.1.2 IMS in Parallel Sysplex architecture

6.1.3 Related improvements

6.2 IMS Database Manager

6.2.1 Supported IMS databases

6.2.2 Data sharing integrity overview

6.2.3 Locking recommendations

6.2.4 Single points of failure

6.2.5 Batch considerations

6.2.6 Converting MSDBs

6.3 IMS Transaction Manager

6.3.1 Affinities

6.3.2 Transaction workload balancing

6.3.3 Transaction simplification

6.3.4 General IMS TM application performance considerations

6.3.5 Connectivity

6.3.6 IMS configuration considerations

Chapter 7. WebSphere MQ application considerations

7.1 A brief introduction to WebSphere MQ

7.2 A standalone queue manager

7.3 Queue managers in a queue-sharing group

7.4 Coupling Facility list structures

7.5 Channels in a queue-sharing group

7.5.1 Channel initiators

7.5.2 Shared inbound channels

7.5.3 Shared outbound channels

7.6 Intra-group queuing

7.7 Benefits of using queue sharing groups

7.8 Initial considerations related to the use of QSGs

7.8.1 Technical setup

7.8.2 Application development

7.9 How applications can exploit WebSphere MQ shared queues

7.9.1 Multiple cloned servers.

7.9.2 Replicated local queues with shared inbound channels

7.9.3 IMS Bridge

7.9.4 Queue partitions

7.9.5 Serialized applications

7.9.6 Shared queues and clustering

7.9.7 Inbound channels and target queues

7.9.8 Shared queue triggering

7.10 Limitations and restrictions

7.11 Sharing and clustering

7.12 Some final considerations

Chapter 8. Implementation and migration

8.1 Migration planning

8.2 CICS

8.2.1 Create the CICS sysplex environment

8.2.2 Exploit the sysplex environment with the applications

8.3 DB2 data sharing implementation

8.3.1 Plan a naming convention

8.3.2 Planning for availability

8.3.3 Migrating DB2 applications

8.3.4 Monitoring DB2 data sharing

8.4 WebSphere MQ

8.4.1 Migrating your existing applications to use shared queues

8.4.2 Migration scenario

8.4.3 Recommendations

Glossary

Related publications

IBM Redbooks

Other publications

Online resources

How to get IBM Redbooks

Help from IBM

Index

Back cover.

Notes:

"October 2004."

"SG24-6523-00."

Includes bibliographical references and index.

OCLC:

61453018