Oracle International Corporation

Harvey Eneman

Carol L Colrain

Robert H Lee

Sashikanth Chandrasekaran

Wei-Ming Hu

Gene Gleyzer

Mark Falco

Cameron Purdy

Alex Gleyzer

George M Candea

A system and method is described for use with a data grid cluster to support death detection. A network ring is formed by connecting a plurality of process nodes in the data grid, wherein each node in the network ring watches another node. A death of a first process node in the network ring can be detected by a second process node, when the second process node notices that its connection to the first process node has closed. The first process node then informs other process cluster nodes in the network ring that the first node is dead. In accordance with an embodiment, machine level death detection can also be supported in the data grid cluster by using an Internet Protocol (IP) monitor.

System and method for use with a data grid cluster to support death detection

A system and method for providing cooperative resource groups for high availability applications, such as cluster databases, is described. A cluster framework, including a plurality of nodes, is built. A plurality of cooperative resource groups is formed, each including a logical network address, at least one monitor and an application providing services and externally accessed using the logical network address. A plurality of resources is structured, each including a cluster service supporting the services provided by each application. A preferred node for execution is designated for each cooperative resource group and one or more possible nodes are provided as standby nodes for each other cooperative resource group. The services are restarted on a surviving node off a critical path of the preferred node upon an unavailability of the preferred node, while the logical network address is kept available on each possible node for the cooperative resource group.

System and method for providing cooperative resource groups for high availability applications

A system and method for detecting a failure of a first process is disclosed. According to one aspect, a first connection is established between a first process and a second process. A monitoring mechanism monitors the status of the first process to detect whether the first process has failed. In response to determining that the first process has failed, the monitoring mechanism causes an out-of-band message to be sent to the second process.

System and method for providing out-of-band notification of service changes

A method of managing an allocation of a plurality of resources of a computer system adapted to support a plurality of processes includes a step of selecting one of a plurality of policy modules to query according to a master policy, each policy module being associated with and managing an allocation of resources required by one or more of the plurality of processes. A query may then be issued to the selected policy module. Responsive to the issued query, a request for allocation of one of the plurality of resources may be received. A resource allocation order specifying the requested one of the plurality of resources may then be issued to a dispatcher, the dispatcher being configured to bind selected resources to selected processes. The resource allocation order may then be executed, the executing step being effective to bind the requested one of the plurality of resources to the process or processes associated with the selected policy module.

Growing community of inventors

Belmont, CA, United States of America

Harvey Eneman