- A
- Access Control Lists (ACL)
- A Tuxedo security feature that controls client access to services by means of lists that are automatically checked each time a service is requested.
- ACID Properties
- The essential characteristic of transaction processing systems:
Atomicity: All changes that a transaction makes to a database are made permanent, or else are nullified.
Consistency: A successful transaction transforms a database from a previous valid state to a new valid state.
Isolation: Changes that a transaction makes to a database are not visible to other operations until the transaction completes its work.
Durability: Changes that a transaction makes to a database survive future system or media failures.
- Application
- A BEA TUXEDO System/T application is bounded by the environment described in a single TUXCONFIG file. In /Domain, a BEA TUXEDO System/T application can communicate with another application via a domain gateway group.
- Application Domain
- When used alone, the term Domain can mean a number of things. In order to avoid confusion, the term application domain is used to refer to a BEA TUXEDO application bounded by the configuration of a tmconfig file. This application domain can be restricted to a single platform, or shared memory (SHM) environment, or could be scaled across multiple machines in a multiple processor (MP) environment.
- Application Programming Interface (API)
- 1) The verbs and environment that exist at the application level to support a particular system software product. 2) A set of code that enables a developer to initiate and complete client/server requests within an application. 3) A set of calling conventions that define how to invoke a service. A set of well-defined programming interfaces (entry points, calling parameters, and return values) by which one software program utilizes the services of another
- Application Program-to-Program Communication (APPC)
- An interface to LU6.2 services; provides a set of primitives to conduct conversations in LU6.2 sessions.
- B
- buffer
- see "typed data buffer."
- C
- Client
- A program designed to request information from a server.
- CNOS
- CNOS are service programs implemented as part of an LU6.2. The CNOS programs negotiate session limits between the two communication LU's.
- COBOL
- "Common Business Oriented Language." A semi-structured programming language designed by the U.S. DoD in 1959, designed to be used for most business applications. It is the most common language used for most mainframe applications in general.
- COMMAREA
- A CICS data buffer area that is sent to application programs, typically as a COBOL linkage section variable, providing an area for sending data to, and returning data from, application programs. This is part of the data sent to a program invoked via DPL.
- Common Programming Interface for Communications (CPI-C)
- An interface to LU6.2 services. It is a simpler set of primitives than the APPC interface and is intended for use in program-to-program communications.
- copybook
- A COBOL source file that is included by one or more source programs and typically contains a declaration for one or more record (group) data items.
- Customer Information Control System/Enterprise System Architecture (CICS/ESA)
- An operating environment devised by IBM that provides a foundation upon which to write customer applications programs. Several facilities useful for programming are supplied by the CICS environment, including basic mapping services (BMS), transient data queues (TD), temporary storage files (TS), memory services, etc. Customer applications are built as separate transaction programs, and are invoked as transactional tasks. CICS/ESA is a trademark of International Business Machines (IBM), Inc.
- D
- Dataview
- The representation of a data record, consisting of information about all of the data fields within the record as well as their types, lengths, and offsets.
- Distributed Program Link (DPL)
- Function of CICS ISC that supports LINK requests between CICS regions, and is similar to a BEA TUXEDO request/response.
- Distributed Transaction Processing (DTP)
- A CICS intercommunication in which processing is distributed among transactions that communicate synchronously over intersystem or inter-region links. It is roughly equivalent to BEA TUXEDO conversations.
- E
- EJB
- "Enterprise Java Beans." The object-oriented business component model for transactional-based programs, defining the operation and protocols between Java client and server programs.
- ESA
- (ESA) Enterprise Systems Architecture is the conceptual structure and functional behavior of IBM's latest range of mainframe computers. ESA/370 is the fourth step in an evolution of which the first three steps were System/360, System/370, and System/370 extended architecture (370-XA).
- F
- Field Manipulation Language (FML)
- A set of C language functions for defining and manipulating storage structures called field buffers. Cooperating processes can send and receive data in fielded buffers.
- FML Buffer
- A buffer of self-describing data items accessed through the Field Manipulation Language API.
- I
- Information Management System (IMS)
- A database manager used by CICS/ESA to allow access to data. IMS provides for the arrangement of data in an hierarchical structure and a common access approach in application programs that manipulate IMS databases.
- Inbound
- A generic term referring to request message direction relative to the server, or response message direction relative to the client.
- Information Management System (IMS)
- A database manager used by CICS/ESA to allow access to data. IMS provides for the arrangement of data in an hierarchical structure and a common access approach in application programs that manipulate IMS databases.
- InterSystem Communications (ISC)
- Communication between separate systems by means of SNA networking facilities or by means of the application-to-application facilities. ISC links CICS systems to other systems, and may be used for communication between user applications, or to transparently execute CICS functions on a remote CICS system.
- J
- J2EE
- "Java to Enterprise Edition." A collection of Java standards (EJB, JNI, and so forth) that together define an enterprise application programming environment.
- Java
- An object-oriented programming language. A descendant from C, it was invented by James Gosling of Sun Microsystems.
- L
- Local Domain
- A Local Domain is a part of an application (set or subset of services) that is available to other domains. A Local Domain is always represented by a Domain Gateway Group, and the terms are used interchangeably.
- Local Service
- A Local Service is a service of a local domain that is made available to remote domains through a Domain Gateway Group.
- Logical Unit (LU)
- In SNA, a port through which a user gains access to the services of a network. Also, see System Network Architecture (SNA).
- LU6.2
- LU6.2 is a particular SNA logical unit that identifies a specific set of services for program to program communication. Services include syncpoint, mapping of buffers into records, message confirmation, and security.
- M
- MODENAME
- MODENAME is a configuration parameter that names a set of characteristics for a group of BEA eLink Java Adapter for Mainframe WLS Edition sessions. In the CICS region, the mode is defined in VTAM and referenced in CIC and the DMCONFIG file.
- mirror task
- CICS/ESA task that services incoming requests that specify a mirror transaction (CSMI, CSM1, CSM2, CSM3, CSM5, CPMI, CVMI, or a user-defined mirror transaction identifier).
- mirror transaction
- CICS/ESA transaction that recreates a request that is function shipped from one system to another, issues the request on the second system, and passes the acquired data back to the first system.
- Mirror Transaction Identifier Support
- BEA eLink Java Adapter for Mainframe WLS Edition feature which enables BEA TUXEDO clients to invoke host CICS/ESA programs and, conversely, CICS/ESA client programs to invoke BEA TUXEDO services. Based on the IBM CICS/ESA mirror transaction.
- Multiple Virtual Storage (MVS)
- An operating system for processing systems consisting of one or more mainframe processors.
- O
- Outbound
- A generic term referring to request message direction relative to the client, or response message direction relative to the server.
- P
- Partitioned Data Set (PDS).
- A CICS/ESA data set in direct access storage that is divided into partitions called members. A member can contain a program or data. Program libraries are held in partitioned data sets.
- R
- re-entrant
- The attribute of a program or routine that allows the same copy of the program or routine to be used concurrently by two or more tasks.
- Remote Domain
- A Remote Domain is a part of an application accessed through a Domain Gateway Group. The remote domain may be another BEA WebLogic Server application, an application running under another TP system, or a SNA Communications Resource Manager application.
- Remote Service
- A Remote Service is a service of a remote domain that is made available to the local application through a Domain Gateway Group.
- Resource Definition Online (RDO)
- The recommended method of defining resources to CICS/ESA. Resource definitions are created interactively by a CEDA transaction, or by the DFHCSDUP utility. Both methods store definition in the CICS/ESA system definition data set (CSD). At CICS initialization, CSD definitions are selectively installed as CICS system tables controlled by a user-supplied list of definitions. CEDA-defined resource definitions can be installed while CICS is active and used immediately.
- S
- Server
- A computer or program that is dedicated to providing information in response to external requests.
- Session
- When two LU's bind with each other, that is, when they have successfully negotiated how they will communicate, they are said to be in session. SNA has fixed limits on the number of sessions configurable for an LU type.
- Stack
- Platform vendor-supplied software that provides connectivity to an SNA network.
- Synchronization Level (sync level)
- The level of synchronization (0, 1, or 2) established for an APPC session between intercommunicating CICS/ESA transactions. Level 0 gives no synchronization support, level 1 allows the exchange of private synchronization requests, and level 2 gives full CICS/ESA synchronization support, with backout of all updates to recoverable resources if failure occurs.
- SNA Communication Resource Manager (SNACRM)
- A process that provides all of the sync-level two logic for an SNA domain gateway and directly communicates with the PU2.1 server.
- System Network Architecture (SNA)
- A seven-layer networking protocol. Each layer of the protocol has a set of associated data communication services. The services of the uppermost layer are embodied in a Logical Unit (LU). Each LU type defined in SNA has its own specific set of services available to an end user for communicating. The end user may be a terminal device, or an application program. The SNA structure enables the end user to operate independently, unaffected by the specific facilities used for information exchange.
- T
- Transaction
- 1) A complete unit of work that transforms a database from one consistent state to another. In DTP, a transaction can include multiple units of work performed on one or more systems.
- 2) A logical construct through which applications perform work on shared resources (e.g., databases). The work done on behalf of the transaction conforms to the four ACID Properties: atomicity, consistency, isolation, and durability.
- Transaction Processing (TP)
- A form of immediate data processing in which user requests are entered directly to the terminal and on-line programs satisfy the requests; for example, by updating database files and displaying output messages.
- typed data buffer
- A block of data, arranged as a record composed of one or more data fields. Each field has a type and a length, and optionally a name. Buffer types are specified by their name, which typically corresponds to the copybook name or class name that defines the record structure.
- V
- Virtual Telecommunications Access Method (VTAM)
- A set of programs that controls communication across a network between terminals and application programs.
