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Configuring and using XA distributed transactions in WebSphere Studio
This article describes distributed transactions and shows you how to configure a WebSphere Studio Application Developer test server with XA resources for DB2, Oracle, and JMS that can be used together in a distributed transaction. The article describes an
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While all of these features are useful, perhaps the single greatest advantage of using EJBs is
transaction management. EJBs and container-managed transactions (CMTs) make transaction management virtually transparent to the bean developer. -
The container infers the transaction model
from the method boundaries and deployment descriptor, and controls the transaction commits and rollbacks at runtime. - 1 more annotations...
Meet the JavaScript Development Toolkit
Summary: The JavaScript Development Toolkit (JSDT) is an open source plug-in that brings robust JavaScript programming tools to the Eclipse platform. JSDT streamlines development, simplifies code, and increases productivity for pure JavaScript source files and JavaScript embedded in HTML.
Create and implement an XPCOM component for the Firefox browser
Summary: Learn how to create, develop, and test a Cross-Platform Component Object Model (XPCOM) component that can be used by the Firefox browser as an extension of an application. Sample code provided with the example used in the article gives you a quick start for developing your component for Firefox.
Intelligent agents and the Semantic Web
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The Semantic Web is a set of tools and frameworks for making,
querying, and manipulating knowledge. The key technology behind the Semantic Web is the
Resource Description Framework (RDF), which can be seen as both a graphical (a graph of
n-triples) and an object-oriented knowledge representational model. Several formats
exist to make this model a machine-readable model (for instance RDF/XML, RDF/N3, and
RDF/Turtle). Lots of information is available to new developers of the Semantic Web on
the Semantic Web Activity page and the now defunct Semantic Web Education and Outreach
page. See the Resources section for links to these
pages.One of the key design features that makes the Semantic Web more meaningful
and useful is the establishment of interlinking data between data sets across the Web.
Tim Berners-Lee highlighted this in his 2006 article titled "Design Issues: Linked
Data." Linked Data ensures that all Semantic Web data is accessible on the Web by
exploiting the full potential of HyperText Transfer Protocol (HTTP). Lots of exemplary
Linked Data sets exist today, as you can see in Richard Cyganiak's Linking Open Data
datasets cloud (see Resources), which is all thanks
to community efforts under the Linking Open Data initiative.
Nivel de bloqueo de Compromiso
Nivel de bloqueo *CHG
Utilice este valor si desea impedir que otros trabajos que se ejecutan al mismo tiempo efectúen cambios en los registros modificados. Para los archivos que se abren para control de compromiso, el bloqueo se retiene mientras dura la transacción. En el caso de los archivos que no se abren bajo control de compromiso, el bloqueo del registro solo se retiene desde el momento en que se lee el registro hasta que se completa la operación de actualización.
Nivel de bloqueo *CS
Utilice este valor para impedir que otros trabajos que se ejecutan al mismo tiempo efectúen cambios en los registros modificados y los registros recuperados. Los registros recuperados que no se cambian solo se protegen hasta que se liberan, o se recupera otro registro.
El nivel de bloqueo *CS garantiza que otros trabajos no podrán leer un registro para actualización que este trabajo ha leído. Además, el programa no puede leer registros para actualización que se han bloqueado con el tipo de bloqueo de registros *UPDATE en otro trabajo hasta que ese trabajo accede a otro registro.
Nivel de bloqueo *ALL
Utilice este valor para impedir que otros trabajos que se ejecutan bajo control de compromiso al mismo tiempo efectúen cambios en los registros modificados y los registros recuperados que están bajo control de compromiso. Los registros que se recuperan o modifican se protegen hasta la siguiente operación de compromiso o retrotracción.
El nivel de bloqueo *ALL garantiza que otros trabajos no podrán acceder a un registro para actualización que este trabajo ha leído. Es distinto del protocolo de bloqueo normal. Cuando se especifica el nivel de bloqueo *ALL, ni tan solo es posible acceder a un registro que no se ha leído para actualización si este está bloqueado con el tipo de bloqueo de registros *UPDATE en otro trabajo.
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- Transacciones simples o complejas en las que intervienen
- En un único sistema remoto.
- En el sistema local y uno o varios sistemas remotos.
- Asignados a más de un diario del sistema local. Cada diario puede
describirse de forma general como una ubicación
local.
archivos de base de datos de más de una ubicación. Los archivos de
base de datos pueden estar:
IBM Redbooks | WebSphere Application Server V7: Administration with Scripting
The administrative console is sufficient for tasks that are non-repetitive, have a minimal number of administrative steps, and are relatively simple. For administration that requires many steps, which can be repetitive, and time consuming to configure, wsadmin combined with scripts is an ideal tool. In this IBM® Redpaper™ publication, we introduce the wsadmin scripting solution and describe how you can use it to perform basic tasks
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The administrative console is sufficient for tasks that are non-repetitive, have a minimal number of administrative steps, and are relatively simple. For administration that requires many steps, which can be repetitive, and time consuming to configure, wsadmin combined with scripts is an ideal tool. In this IBM® Redpaper™ publication, we introduce the wsadmin scripting solution and describe how you can use it to perform basic tasks
IBM Redbooks | WebSphere Application Server V7: Understanding Class Loaders
Understanding how the Java™ and WebSphere® class loaders work is critical to packaging and deploying Java EE5 applications. Failure to set up the class loaders properly most likely results in a cascade of the infamous class loading exceptions (such as ClassNotFoundException) when trying to start your application.
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Understanding how the Java™ and WebSphere® class loaders work is critical to packaging and deploying Java EE5 applications. Failure to set up the class loaders properly most likely results in a cascade of the infamous class loading exceptions (such as ClassNotFoundException) when trying to start your application.
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