Maintenance Manual




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Maintenance Manual

Maintenance Manual
Overview

The Maintenance Manual provides maintenance personnel with the information necessary to maintain the system effectively. The manual provides the definition of the software support environment, the roles and responsibilities of maintenance personnel, and the regular activities essential to the support and maintenance of program modules, job streams, and database structures.
In addition to the items identified for inclusion in the Maintenance Manual, additional information may he provided to facilitate the maintenance and modification of the system. Appendices to document various maintenance procedures standards, or other essential information may he added to this document as needed.

1INTRODUCTION


This section provides general reference information regarding the Maintenance Manual. Whenever appropriate, additional information may be added to this section.

1.1Purpose


In this section, describe the purpose of the manual and reference the system name and identifying information about the system and its programs.

1.2Points of Contact


This section identifies the organization(s) responsible for system development maintenance, and use. This section also identifies points of contact (and alternate if appropriate) for the system within each organization.

1.3Project Reference


This section provides a bibliography of key project references and deliverables produced during the information system development life cycle.

1.4Glossary


Provide a glossary with definitions of all terms, abbreviations, and acronyms used in the manual. If the glossary is several pages in length, place it as an appendix.

2SYSTEM DESCRIPTION


The subsequent sections provide an overview of the system to be maintained.

2.1System Application


This section provides a brief description of the purpose of the system, the functions it performs, and the business processes that the system is intended to support. If the system is a database or an information system, include a general description of the type of data maintained, and the operational sources and uses of those data.

2.2System Organization


In this section, provide a brief description of the system structure, major system components, and the functions of each major system component. Include charts, diagrams, and graphics as necessary.

2.3Security


This section provides an overview of the system’s security controls and the need for security and protection of sensitive data. For example, include information regarding procedures to log on/off of the system, provisions for the use of special passwords, access verification, and access statuses as appropriate.

2.4System Requirements Cross-Reference


This section contains an exhibit that cross-references the detailed system requirements with the system design document and test plan. This document, also referred to as a trace ability matrix in other documents, assists maintenance personnel by tracing how the user requirements developed in the FRD are met in other products of the life cycle. Because this information is provided in the system design document, it may he appropriate to repeat or enhance that information in this section.

3SUPPORT ENVIRONMENT


This section describes the operating and support environment for the system and program(s). Include a discussion of the equipment, support software, database characteristics, and personnel requirements for supporting maintenance of the system and its programs.

3.1Equipment Environment


This section describes the equipment support environment including the development, maintenance, and target host computer environments. Describe telecommunications and facility requirements, if any.

3.1.1Computer Hardware


This section discusses the computer configuration on which the software is hosted and its general characteristics. The section should also identify the specific computer equipment required to support software maintenance if that equipment differs from the host computer. For example, if software development and maintenance are performed on a platform that differs from the target host environment, describe both environments. Describe any miscellaneous computer equipment required in this section, such as hardware probe boards that perform hardware-based monitoring and debugging of software. Include any telecommunications equipment.

3.1.2Facilities


This section describes the special facility requirements, if any, for system and program maintenance and includes any telecommunications facilities required to test the software.

3.2Support Software


This section lists all support software - such as operating systems, transaction processing systems, and database management systems (DBMSs) - as well as software used for the maintenance and testing of the system. Include the appropriate version or release numbers, along with their documentation references, with the support software lists.

3.3Database Characteristics


This section contains an overview of the nature and content of each database used by the system. Reference other documents for a detailed description, including the system design document as appropriate.

3.4Personnel


This section describes the special skills required for the maintenance personnel. These skills may include knowledge of specific versions of operating systems, transaction processing systems, high-level languages, screen and display generators, DBMSs, testing tools, and computer-aided system engineering tools.

4SYSTEM MAINTENANCE PROCEDURES


This section contains information on the procedures necessary for programmers to maintain the software.

4.1Conventions


This section describes all rules, schemes, and conventions used within the system. Examples of this type of information include the following:


  • System-wide labeling, tagging, and naming conventions for programs, units, modules, procedures, routines, records, files, and data element fields

  • Procedures and standards for charts and listings

  • Standards for including comments in programs to annotate maintenance modifications and changes

  • Abbreviations and symbols used in charts, listings, and comments sections of programs


If the conventions follow standard programming practices and a standards document, that document may be referenced, provided that it is available to the maintenance team.

4.2Verification Procedures


This section includes requirements and procedures necessary to check the performance of the system following modification or maintenance of the system’s software components. Address the verification of the system-wide correctness and performance.
Present in detail, system-wide testing procedures. Reference the original development test plan if the testing replicates development testing. Describe the types and source(s) of test data in detail.

4.3Error Conditions


This section describes all system-wide error conditions that may be encountered within the system, including an explanation of the source(s) of each error and recommended methods to correct each error.

4.4Maintenance Software


This section references any special maintenance software and its supporting documentation used to maintain the system.

4.5Maintenance Procedure


This section describes step-by-step, system-wide maintenance procedures, such as procedures for setting up and sequencing inputs for testing. In addition, present standards for documenting modifications to the system.

5SOFTWARE UNIT MAINTENANCE PROCEDURES


For each software unit within the system, provide the information requested. If the information is identical for each of the software units it is not necessary to repeat it for each software unit. If the information in ally of the areas discussed below is identical to information provided in Section 4, System Maintenance Procedures, for the system maintenance procedures, then reference that area. This section should contain the following:


  • Unit Name And Identification—Provide the name or identification of each software unit that is a component of the system. Repeat the following information for each unit name.

  • Description—Provide a brief narrative description of the software unit. Reference other sections within the life cycle that contains more detailed descriptive material.

  • Requirements Cross-Reference—Include the detailed user requirements satisfied by this particular software unit. It may he a matrix that traces the system requirements from the FRU) through the system design document and test plan for the specific software units. Other life cycle documentation may be referenced as appropriate.

  • Conventions—Describe all rules, schemes, and conventions used within the program. If this information is program-specific, provide that information here. If the conventions are all system-wide, discuss them Section 4. If the conventions follow standard programming practices and a standards document, that document may be referenced here.

  • Verification Procedures—Include the requirements and procedures necessary to check the performance of the program following modification or maintenance and addresses the verification of program correctness, performance and detailed testing procedures. If the testing replicates development testing, it may be appropriate to reference the original development test plan.

  • Error Conditions— Describe all program-specific error conditions that may be encountered provide an explanation of the source(s) of each error, and recommend methods to correct each error. If these error conditions are the same as the system-wide error conditions described in Section 4.3, Error Conditions. that section may be referenced here.

Listings—Provide a reference to the location of the program listings.

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