ISO/IEC INTERNATIONAL STANDARD 9804 Third edition 1998-12-01 Information technology Open Systems Interconnection Service definition for the Commitment, Concurrency and Recovery service element Technologies de I'information Interconnexion de systemes ouverts (Osl) - Définition du service pour I'élément d'engagement, de concomitance et de rétablissement IEC Reference number ISO/IEC 9804:1998(E) I without license from IHS Not for Resale ISO/IEC 9804:1998(E) Contents Page 1 Scope 1 2 Normative references . 1 2.1 Identical Recommendations I International Standards 1 2.2 Paired Recommendations I International Standards equivalent in technical content 2 3 2 3.1 Reference Model definitions.... 2 3.2 3 3.3 3 3.4 3 3.5 3 3.6 CCR service definitions .... 4 4 Abbreviations 7 5 Conventions 8 6 Concepts.... 8 6.1 Use of CCR in a distributed application environment. 8 6.2 CCR facilities.... 14 6.3 Heuristic decisions... 16 7 Service definition . 16 7.1 C-INITIALIZE service 17 7.2 C-BEGIN service... 18 7.3 C-PREPARE service. 19 7.4 C-READY service .. 20 7.5 C-COMMIT service.. 20 7.6 C-ROLLBACK service. 21 7.7 C-NOCHANGE service. 22 7.8 C-CANCEL service. 23 7.9 C-RECOVER service 23 7.10 C-P-ERROR service .. 25 8 Sequencing information... 25 8.1 General.. 25 8.2 Events 32 8.3 States... 32 8.4 32 8.5 Interpretation of the state table 32 @ISO/IEC1998 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from thepublisher. ISO/IEC Copyright Office · Case postale 56 · CH-1211 Geneve 20 · Switzerland Printed in Switzerland Copyright International Organization for Standardization ted without license from IHS Not for Resale @ ISO/IEC ISO/IEC 9804:1998(E) 8.6 Completing the branch 32 8.7 Collisions and disruptive services 33 9 Using CCR. 33 9.1 General . 33 9.2 Use of CCR with non-reference mapping .. 33 9.3 Use of session synchronization and resynchronization services . 33 9.4 Use of CCR with session activities. 33 9.5 Use of presentation services 33 Annex A - CCR service-user rules 34 A.1 Introduction.. 34 A.2 Compliance..... 34 A.3 CCR service primitive usage rules ... 34 A.4 Atomicactiondatamanipulationrules. 37 A.5 Bound data manipulation rules.. 38 A.6 CCR service-user data transfer rules... 39 Annex B - Relationship of CCR to the Application Layer Structure ... 40 B.1 CCR service-provider... 40 B.2 CCR service-user... 40 B.3 Atomic action graph .. 40 Annex C- CCR tutorial. 42 C.1 Introduction.. 42 C.2 Strucutre of an atomic action tree.. 43 C.3 CCR service-user information resources 45 C.4 Concurrency 47 C.5 Recovery... 48 C.6 Time relations and sequence of service primitives 52 C.7 Comments on implementation complexity. 53 C.8 Using the User Data parameter on CCR services 53 C.9 Optional use of C-PREPARE. 59 iii Copyright InternationalOrganization for Standardization se from IHS Not for Resale IS0/IEC 9804:1998(E) @ISO/IEC Foreword ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies that are members of ISO or IEC participate in the development of International Standards through technical committees established by the respective organization to deal with particular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the work. In the field of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1. Draft International Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as an International Standard requires approval by at least 75 % of the national bodies casting a vote.