Oracle International Corporation

Oracle America, Inc.

Ashwinee Khaladkar

Andrey Gusev

Jonathan Creighton

Raj K Kammend

Alok Kumar Srivastava

Juan Tellez

Sarat B Kakarla

Ira Pramanick

Gaurav Kumar

Jennifer C Harkness

A method and computer-readable storage representing resources in a cluster by a plurality of attribute-value pairs that together are part of a 'resource profile,' in which each attribute-value pair defines all, or a portion of, a management policy that applies to the resource. Included is a built-in resource type called a 'Local Resource' type. Local resources that are attached to the server are instantiated with a combination of the resource profile and values of the Local Resource type.

'Local resource' type as a way to automate management of infrastructure resources in oracle clusterware

A clusterware manager configures a resource according to resource attributes values specified by a resource profile. The resource profile conforms to a resource profile syntax that the clusterware manager is configured to interpret pursuant to clusterware manager software. The resource profile syntax prescribes a start dependency syntax defining a dependency between a first resource and a second resource in which the second resource must be in an online state before the first resource is started. The resource profile syntax further prescribes a stop dependency syntax defining a dependency between a first resource and a second resource in which the first resource is brought in an off-line state when the second resource leaves an online state.

Unidirectional resource and type dependencies in oracle clusterware

Allowing for resource attributes that may change dynamically while the resource is in use, provides for dynamic changes to the manner in which such resources are managed. Management of dynamic resource attributes by clusterware involves new entry points to clusterware agent modules, through which resource-specific user-specified instructions for discovering new values for resource attributes, and for performing a user-specified action in response to the new attribute values, are invoked. A clusterware policy manager may know ahead of time that a particular resource has dynamic attributes or may be notified when a resource's dynamic attribute has changed and, periodically or in response to the notification, request that the agent invoke the particular resource-specific instructions for discovering new values for attributes for the particular resource and/or for performing a user-specified action in response to the new attribute values. During the majority of this process, the resource remains available.

Dynamic resource profiles for clusterware-managed resources

A distributed computing system is provided. The system includes a first node, a second node in communication with the first node, and a device coupled to the first node and second nodes. The first node and the second node include component specific modules. The first and second nodes access the device via a selected component specific module defined in the first and second nodes, respectively. The selected component specific module corresponds with the device. An apparatus for using a device having quorum device functionality as a quorum device in a clustering environment, a method and computer program embodied on a computer readable medium for using a device as a quorum device in a cluster environment, and a method and a computer program embodiment on a computer readable medium for interfacing with a quorum device coupled to a node in a cluster environment, are also provided.

Pluggable device specific components and interfaces supported by cluster devices and systems and methods for implementing the same

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Mountain View, CA, United States of America

Ashwinee Khaladkar