International Business Machines Corporation

Andreas Maier

Angel Nunez Mencias

Jakob Christopher Lang

Rene Trumpp

Namik Hrle

Dieter Helmut Roller

Andreas Arning

James Zu-Chia Teng

Julie Ann Watts

Wolfgang Reichert

William B Nettles

Volker Schoelles

John S Kapernick

Gerold Kurth

David Brush

Milos Lalovic

Integrating a further communication bridge into a running data processing system. The data processing system includes a communication client running a first operating system having no own communication stack and at least a first communication bridge running a second operating system having an own communication stack. The first communication bridge is configured as a master communication bridge. The further communication bridge announces itself as a slave communication bridge at an announcement time. The master communication bridge executes a quiesce process on the network adapter and on the API of the communication client when there are no data packets in the queue with a sending time earlier than the announcement time. The master communication bridge extracts the state of its communication stack and sends it to the further communication bridge. The master communication bridge resumes the network adapter and the API.

Integrating a communication bridge into a data processing system

Routing communication in a data processing system. Communication is routed from a communication client having no own communication stack through a first own communication stack of a first communication bridge, and through a second own communication stack of a second communication bridge. Routing between the communication client and the first and the second communication bridges uses a communication mechanism that does not include an own communication stack. One of the first or the second communication bridges is configured to act as a master communication bridge, and the other of the second or the first communication bridges is configured to act as a slave communication bridge.

Routing communication between computing platforms

The present invention proposes a computerized method and means for providing an improved handling of messages directed to an user of an electronic messaging system. The suggested method comprises a first step of determining user characteristics capable of identifying the user as an addressee of a message. The method further comprises a second step of analyzing a certain message and determining its message characteristics exploiting the information contained in one or a multitude of message fields. The method finally comprises a third step of applying at least one deduction rule of a potential set of deduction rules to said certain message. The deduction rule assigns based on the user characteristics and the message characteristics a role of said user to said certain message. The role is capable of revealing said user's relationship to said certain message.

Handling of messages in a electronic messaging system

According to the method, apparatus, and computer readable medium of the present invention, a scan is performed by accessing all rows of a table in a relational database, evaluating each row to determine whether the row satifies a set of predicates of a database query, and returning the row if it satisfies the set of predicates. According to a preferred embodiment of the present invention, all rows are evaluated regardless of current locks. The scan is continued if the row does not satisfy the set of predicates regardless of the current lock on the row. The locking semantics according to the invention has the advantage that it completely removes the problem of lock contention on the rows that do not satisfy statement predicates.

Method and system for reduced lock contention in SQL transactions

The present invention provides facilities for tagging files or data with attribute information in the form of a file tag (TAGINFO) which contains an identifier for text information (TEXTFLAG) and an attribute (COSID) for identifying encoding schemes. TXTFLAG is an auto conversion flag. Furthermore, a runtime attribute (process CCSLD) is assigned to a process specifying the runtime encoding scheme. A conversion is done automatically by an auto conversion function if both CCSIDs allow a conversion. Files having no file tag are tagged with a virtual file tag by means of an automatic tagging (AUTOTAG) function using heuristic rules for determining whether the data or file contains text or binary information. Old applications must work with untagged files as before. Existing applications should be able to benefit from auto conversion and thereby to be enabled to process new, tagged files without code changes.

File tagging and automatic conversion of data or files

The present invention relates to handling of performance problems arising in computer networks and in particular, to precise definition of packet traversal time. The basic idea of the present invention comprises the principle to perform a calibration phase, in which the difference between the computer clocks on the client and the server computer is calculated, using a statistical method. This allows to calculate request and response time separately.

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Stuttgart, Germany

Andreas Maier