Oracle International Corporation

Bea Systems, Inc.

Brian Chesebro

James William Gish

Chinnappa Ganapathy Codanda

Deborah C June

Codanda Ganapathy Chinnappa

A connector architecture implementation that is J2EE compliant and provides improved connection management capabilities. The connector architecture implementation provides a connector leak detection mechanism that detects connection leaks both automatically and manually. The connector architecture implementation pre-configures and manages the growth and reduction of a connection pool. The connector architecture implementation may be pre-configured by pre-populating the connection pool. Connection pool growth may be managed by generating connections in response to connection requests. A connection pool may also be configured to reduce the number of connections in the pool. The number of connections may be reduced if the connection demand decreases. Password credentials allowing access to services are used to provide additional connection management.

Method for storing credentials in a J2EE connector architecture

In accordance with embodiments, there are provided mechanisms and methods for recovering from an incomplete transaction. These mechanisms and methods can enable embodiments to detect incomplete transactions when recovering from a server crash or other catastrophic event. Some embodiments can automatically re-establish interrupted connections when incomplete transactions have been detected. The ability of embodiments to detect incomplete transaction can allow recovery to initiate substantially immediately upon server restart and adapter redeployment.

Recovery mechanism for transactions

In accordance with embodiments, there are provided mechanisms and methods for substituting a new version resource adaptor for a production version of the resource adaptor. These mechanisms and methods can enable embodiments to provide upgrade to a new version resource adaptor contemporaneous with completion of work by the production version of the resource adaptor. The ability of embodiments to provide upgrade to a new version resource adaptor contemporaneous with completion of work by the production version of the resource adaptor can enable an installation desiring to install a new component of their connector system while the system remains in production, eliminating the need to halt the system, i.e., stop all traffic, replace the production version of the component with an upgraded version, test and finally place the upgraded version into production.

Production redeployment

In accordance with embodiments, there are provided mechanisms and methods for loading a class with a resource adapter classloader and enabling the class to be accessible by other components that interconnect with the resource adapter. In an embodiment, a method for loading a class with a resource adapter classloader is provided that includes detecting an indicator specifying that at least one class loaded by a classloader associated with a resource adapter be made accessible to at least one other classloader. The at least one class loaded by the classloader associated with the resource adapter is made accessible to a system classloader. The at least one other classloader is permitted the capability to access the at least one class loaded by the classloader associated with the resource adapter via the system classloader.

Resource adapter classloading

J2EE connector architecture

In accordance with embodiments, there are provided mechanisms and methods for suspending work by a resource adapter. These mechanisms and methods for suspending work by a resource adapter can enable embodiments to provide the capability to start and stop work performed by a resource adapter to connector architectures. The ability of embodiments to provide the capability to start and stop work performed by a resource adapter can enable users of Connector Architectures to quiesce an adapter's inbound/outbound or work sections. Such capability can enable an adapter embodiment to complete in-flight transactions but not accept new inbound transactions until a request to resume operation is received. Resource adapters may be quiesced during a versioning or change out process or other maintenance processes for example.

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Londonderry, NH, United States of America

Brian Chesebro