International Business Machines Corporation

Steve T Kuo

Jack Chiu-Chiu Yuan

Gerald Dean Hughes

Judith Eleanor Hill

Thomas Clarke Morrison

Haley Hoi Lee Fung

Shyh-Mei Fang Ho

Richard C Schneider

Vern Lee Watts

Dario D'Angelo

Judy Y Tse

Jenny ChengYin Hung

Theresa Hsing Lai

Richard G Hannan

Mark Neal Ziebarth

Mark Alan Bach

Daniel M Haller

James Robert Davis

In Ha Chung

John Kevin Flanigan

Steven Michael Bock

Thomas Phillip Bridges

Jerome Joseph Zentner

Madeline M Fay

Kevin Michael McBride

Kyle Jeffrey Charlet

Bruce E Naylor

Robert Shiwen Lai

Yoshinobu Ueno

Michael Richard Artobello

Richard L Stone

Andrew Daniel Tollerud

Harry Otto Radke

Wai-Yee Doris Ling

Bill Thanh Huynh

Hoang Minh Nguyen

H Moncrief Rowe-Anderson

Bill T Huyah

Stephen Paul Nathan

Candace Antonina Garcia

Paul Dennis Seyforth

Richard S Uyehara

Allen G Lee

Moncrief Rowe-Anderson

Richard Dale Housh

Gerald LeRoy Carpenter

A method, system, and computer program product for initiating batch jobs in a message queuing information system are provided. The method, system, and computer program product provide for monitoring a message queue in the message queuing information system, detecting a predetermined condition in the message queue, determining whether a member name is associated with the predetermined condition, determining whether a server is available responsive to a member name being associated with the predetermined condition, and sending the member name to the server for the server to attach a batch job to load or unload one or more messages in the message queue based on information included in the member name responsive to a server being available.

Monitoring message queues in message queuing information systems and initiating batch jobs to perform functions on the message queues

A system for facilitating XML enable IMS transactions includes a generic XML processor inside an IMS connect program to facilitate any TCP/IP clients, including WebSphere and non-WebSphere, to send and receive XML documents to and from existing IMS transaction business logic. Translations between XML documents and IMS transaction message data structures occur within the IMS connect program under an XML task to parse and transform XML requests and responses. Further, the generic XML processor within the IMS connect program can provide data translation for both non-formatted and formatted IMS transactional messages in XML.

System and method for facilitating XML enabled IMS transactions

A system for satisfying a request from a client for a send-then-commit transaction includes a front-end information management system (IMS) server. Shared message queues (SMQ) communicate with the front-end IMS server and plural back-end IMS. The front-end IMS server receives the request from the client and transmits the request to the SMQ. A back-end IMS server accesses the SMQ and generates a transaction output in response to the request. The back-end IMS server transmits the result to the front-end IMS server and the front-end IMS server interfaces with the client to communicate the response thereto. The back-end IMS server and front-end IMS server operate in separate system images, but work together in a resource recovery services (RRS) environment to commit or backout the transaction output.

System and method for processing transactions in a multisystem database environment

A message is received in a first form for communicating with a first DBMS wherein the first form comprises an internet message prefix and a data portion, the internet message prefix comprising routing information for a client. The message is modified into a second form wherein the client routing information is integrated into the data portion of the message and wherein the second form of the message is utilized to communicate with a second DBMS. A result message generated by the second DBMS is received wherein the result message comprises a result data portion, the result data portion including the routing information. The result message is modified to the first form wherein the result message comprises the internet message prefix, the internet message prefix comprising the client routing information obtained from the result data portion. In this manner, the result message may be routed to the client.

Method, computer program product, and system for routing messages in a computer network comprising heterogenous databases

The present invention is a system for ensuring client access to paired and unpaired response messages. In the method, the server detects one or more unpaired message which are stored in a data structure on the server. The data structure may be created when the server is staffed or automatically when the first unpaired message is identified. The method then uses a communications protocol between the client and server which allows the client to request on or more of the stored unpaired messages. The system of the-present invention uses a request module configured to receive a client request and prepare the client request for a response generator. The response generator receives the client request from the request module and generates an appropriate response. Next, an unpaired message module analyzes the response message generated by the response generator and distinguishes a paired message from an unpaired message. Then, the unpaired message module stores paired messages in an unpaired response data structure. Finally, a response module communicates paired and unpaired messages to the client.

System for ensuring client access to messages from a server

System and method to facilitate XML enabled IMS transactions between a remote client and an IMS application program

The present invention is a method for ensuring client access to paired and unpaired response messages. In the method, the server detects one or more unpaired message which are stored in a data structure on the server. The data structure may be created when the server is started or automatically when the first unpaired message is identified. The method then uses a communications protocol between the client and server which allows the client to request one or more of the stored unpaired messages. The present invention uses a request module configured to receive a client request and prepare the client request for a response generator. The response generator receives the client request from the request module and generates an appropriate response. Next, an unpaired message module analyzes the response message generated by the response generator and distinguishes a paired message from an unpaired message. Then, the unpaired message module stores paired messages in an unpaired response data structure. Finally, a response module communicates paired and unpaired messages to the client.

Method for ensuring client access to messages from a server

An apparatus, system, and method are provided for automatically freeing locked server resources using a timeout value closely related to actual real-time message delays plus a delta value that can be adjusted at a plurality of levels. The levels include default, server, connection, and transaction. The apparatus includes a timer, a communication module, a computation module, and a lock handler. The timer determines a timeout value for communications from a client to a server. The communication module sends an output message to the client and locks a server resource in anticipation of an acknowledgement (ACK) message from the client. The computation module, which calculates an ACK timer, includes a difference between a send time and a current time. If no ACK message has been received from the client and the ACK timer exceeds the timeout value, the lock handler may free the locked server resource.

Apparatus, system, and method for automatically freeing a server resource locked awaiting a failed acknowledgement from a client

A buffer accessible by an application executing under an application server in a first address space is managed by a database adapter executing in a second address space. A data request from the application executing in said first address space, comprising a buffer locator in the empty state, is received by the database adapter executing in the second address space. A buffer is allocated in the first address space and the address of this buffer is stored in the buffer locator. Data associated with the data request, received from a database subsystem, is copied to the buffer. Control is then transferred back to the application whereby the application utilizes the buffer locator to access the buffer and process the data contained therein. A database adapter automatically managing application buffers across address spaces in accordance with the present invention may be referred to as an 'auto-buffer database adapter'.

Method, computer program product, and system for automatic application buffering

A method, apparatus, and article of manufacture for accessing a database management system. A database management system (DBMS), executed by a server computer, manages one or more datastores stored on the computer. The DBMS includes an Open Transaction Manager Access (OTMA) that provides a high level application programming interface (API) for an application program to access the DBMS and its datastores, wherein the OTMA allows the application program to create an authorized connection with the DBMS. The server computer also executes a TCP/IP OTMA Connection (TOC) that establishes and manages connections between the DBMS and the application program. In the preferred embodiment, the application comprises a Java servlet or applet executed by a Java Virtual Machine JVM). A TOC Connector for Java interfaces the JVM to the TOC, wherein the TOC Connector for Java includes one or more objects for establishing a connection between an applet or servlet executed by the JVM and the OTMA of the DBMS, so that transactions can be transmitted from the application program to the DBMS over the established connection and results of the transmitted transactions can be received at the application from the DBMS.

Communication and interaction objects for connecting an application to a database management system

A method, apparatus, and article of manufacture for accessing a database management system. A database management system (DBMS), executed by a server computer, manages one or more datastores stored on the computer. The DBMS includes an Open Transaction Manager Access (OTMA) that provides a high level application programming interface (API) for an application program to access the DBMS and its datastores, wherein the OTMA allows the application program to create an authorized connection with the DBMS. The server computer also executes a TCP/IP OTMA Connection (TOC) that establishes and manages connections between the DBMS and the application program. In the preferred embodiment, the application comprises a Java servlet or applet executed by a Java Virtual Machine (JVM). A TOC Connector for Java interfaces the JVM to the TOC, wherein the TOC Connector for Java includes one or more objects for establishing a connection between an applet or servlet executed by the JVM and the OTMA of the DBMS, so that transactions can be transmitted from the application program to the DBMS over the established connection and results of the transmitted transactions can be received at the application from the DBMS.

System message objects for communicating between an application and a database management system

A method, apparatus, and article of manufacture for accessing a database management system. An application programming interface (API) provides a plurality of simplified procedures that allow an application program executed by the computer to access a database management system (DBMS) by creating an authorized connection between the application program and the DBMS. The application program invokes the simplified procedures of the API, the invoked procedures generate at least one supervisor call (SVC) interrupt that transfers control to an SVC Service Routine, and the SVC Service Routine connects to a Cross Coupling Facility (XCF) that interfaces to an Open Transaction Manager Access (OTMA) component of the DBMS.

Application programming interface for creating authorized connections to a database management system

In a transaction processing system that includes a plurality of client processes coupled to a server process, the server process supports execution of transactions generated by the client processes. The server process includes, for each client process being served, one or more transaction message control mechanisms. Each transaction message control mechanism includes a named processing object that includes a name identifying the object. The named processing object also includes an input process that receives all transaction request messages naming the object and identifying the originating client process. The input process dispatches a transaction process for each transaction request message received from the respective client process. Each transaction process oversees transaction execution and receives transaction output. A transaction process provides a transaction output message for the originating client process. In a non-sync'd mode of operation, transaction processes may synchronously send transaction output messages to client processes. In a synchronized mode of operation, one transaction process at a time sends output messages under control of an output process in the named processing object. The transaction message control mechanisms provide a bi-directional transaction message flow between server and client processes.

Apparatus and method enabling a client to control transaction message traffic between server and client processes

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San Jose, CA, United States of America

Steve T Kuo