International Business Machines Corporation

Christopher John Baker

Philip Ivor Wakelin

Christopher J Poole

Julian Charles Horn

Jenny Jing He

Pradeep Gohil

Gerald M W Allen

Dennis L Plum

Ian J Mitchell

Catherine Mary Moxey

Jonathan Andrew Scott

Arthur James Neil

Controlling asynchronous tasks in a transaction system. A request to start an asynchronous child task is obtained, and a resource status of the system is determined. It is determined whether to suspend a parent task associated with the asynchronous child task or to execute the asynchronous child task based on the determined resource status of the system.

Controlling asynchronous tasks

A computer implemented method generates a visualization of a topology of a flow of multiple transactions. One or more processors detect that a first computer system has received a current transaction initiation request from a precursory transaction. The current transaction initiation request is for an initiation of a current transaction in a computer system, and contains parameter information that is recorded by each computer in a set of interconnected computer systems on which a transaction in the other precursory transactions is executed. One or more processors identify the flow of multiple transactions based on a flow transaction identifier and an identifier of the current transaction in the computer system. The one or more processors generate a visualization of a topology map of the current transaction and the other transactions based on information in the parameter information from the current transaction initiation request.

Flow topology of computer transactions

A visualization of a topology of a flow of multiple transactions is generated. A first computer system receives a current transaction initiation request from a precursory transaction. The current transaction initiation request is for an initiation of a current transaction in the first computer system, and the precursory transaction is part of a flow of other transactions that are upstream from the current transaction. The current transaction initiation request contains parameter information that holds a hop count, which identifies how many computer systems have received other transaction initiation requests in the flow of other transactions, and a transaction initiation count, which identifies how many transaction initiation requests have been transmitted in the flow of other transactions. A processor generates a visualization of a topology map of the current transaction and the other transactions based on information in the parameter information from the current transaction initiation request.

A method of dynamic allocation of program libraries to an application server is provided. In addition to a static allocation of libraries to the server at initialization time, libraries can be added to or removed from the set available to a server while that server is active. New libraries are created as resource objects specifying a set of locations from which programs can be loaded. Each library is allocated a ranking which the system can use to identify its place in the loader's search order relative to other libraries. New library resources are dynamically installed and added to a list of available libraries, including the system's pre-defined library of locations, in a position in the loader's search order determined in accordance with the allocated ranking.

Dynamic allocation of program libraries

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Eastleigh, United Kingdom

Christopher John Baker