公开(公告)号：US20190199639A1

公开(公告)日：2019-06-27

申请号：US16287521

申请日：2019-02-27

Applicant: Oracle International Corporation

Inventor： VIJAY SRIDHARAN ,  RICHARD FRANK ,  JIA SHI ,  KOTHANDA UMAMAGESWARAN ,  JUAN LOAIZA ,  ALEXANDER TSUKERMAN ,  BANG NGUYEN ,  SUMANTA CHATTERJEE

IPC: H04L12/851 ,  H04L29/08

Abstract: A method and apparatus for intelligent network resource manager for distributed computing systems is provided. A first priority is assigned to a first virtual channel set that includes at least two virtual channels of a plurality of virtual channels associated with a physical communication channel. A second priority is assigned to a second virtual channel set that includes at least one virtual channel of the plurality of virtual channels. The first virtual channel set has more virtual channels than the second virtual channel set. Outbound messages of the first priority are directed to virtual channels of the first virtual channel set. Outbound messages of the second priority are directed to virtual channels of the second virtual channel set. The virtual channels are processed in a round-robin order, where processing includes sending the outbound messages over the physical communication channel.

公开(公告)号：US20200169508A9

公开(公告)日：2020-05-28

申请号：US16287521

申请日：2019-02-27

Applicant: Oracle International Corporation

Inventor： VIJAY SRIDHARAN ,  RICHARD FRANK ,  JIA SHI ,  KOTHANDA UMAMAGESWARAN ,  JUAN LOAIZA ,  ALEXANDER TSUKERMAN ,  BANG NGUYEN ,  SUMANTA CHATTERJEE

IPC: H04L12/851 ,  H04L29/08

Abstract: A method and apparatus for intelligent network resource manager for distributed computing systems is provided. A first priority is assigned to a first virtual channel set that includes at least two virtual channels of a plurality of virtual channels associated with a physical communication channel. A second priority is assigned to a second virtual channel set that includes at least one virtual channel of the plurality of virtual channels. The first virtual channel set has more virtual channels than the second virtual channel set. Outbound messages of the first priority are directed to virtual channels of the first virtual channel set. Outbound messages of the second priority are directed to virtual channels of the second virtual channel set. The virtual channels are processed in a round-robin order, where processing includes sending the outbound messages over the physical communication channel.

公开(公告)号：US20220382721A1

公开(公告)日：2022-12-01

申请号：US17334360

申请日：2021-05-28

Applicant: Oracle International Corporation

Inventor： NAGARAJAN MUTHUKRISHNAN ,  BINOY SUKUMARAN ,  GARRET F. SWART ,  SUMANTA CHATTERJEE ,  RAVI SHANKAR THAMMAIAH

IPC: G06F16/21 ,  G06F11/34 ,  G06F16/25 ,  G06F11/20 ,  H04L29/08

Abstract: Herein are resource-constrained techniques that plan ahead for resiliently moving pluggable databases between container databases after a failure in a high-availability database cluster. In an embodiment, a computer identifies many alternative placements that respectively assign each pluggable database to a respective container database. For each alternative placement, a respective resilience score is calculated for each pluggable database that is based on the container database of the pluggable database. Based on the resilience scores of the pluggable databases for the alternative placements, a particular placement is selected as an optimal placement that would maximize utilization of computer resources, minimize database latencies, maximize system throughput, and maximize the ability of the database cluster to avoid a service outage.

公开(公告)号：US20240119006A1

公开(公告)日：2024-04-11

申请号：US17962401

申请日：2022-10-07

Applicant: Oracle International Corporation

Inventor： NAGARAJAN MUTHUKRISHNAN ,  WILLIAM HENRY BENJAMIN HABECK ,  ROSHNI CHATTERJEE ,  SUE-KYOUNG LEE ,  RAVI SHANKAR THAMMAIAH ,  SUMANTA CHATTERJEE

IPC: G06F12/0882 ,  G06F12/084

CPC classification number: G06F12/0882 ,  G06F12/084

Abstract: A computing device is configured to allocate memory for exclusive use of an execution entity from both a shared memory area and a private memory area of the device. Specifically, the shared memory area is configured with a united memory pool (UMP) component. The UMP component is configured to provide portions of huge page-based memory to execution entities for exclusive use of the execution entities. Memory granules that are allocated to the UMP component are divided into smaller memory chunks (which are smaller than a huge page), each of which can be allocated for exclusive use of an execution entity. These memory chunks are mapped to virtual address spaces of the assigned execution entities. Because memory granules can be allocated to, and deallocated from, the UMP component at run-time, the amount of memory that is available for private data generated by execution entities is able to be dynamically adjusted.

公开(公告)号：US20160378713A1

公开(公告)日：2016-12-29

申请号：US14749503

申请日：2015-06-24

Applicant: ORACLE INTERNATIONAL CORPORATION

Inventor： ARUN KAIMALETTU ,  MARGARET SUSAIRAJ ,  SUMANTA CHATTERJEE ,  JOSEPH FRANCIS THERRATTIL KOONEN ,  RICHARD FRANK

IPC: G06F15/173 ,  H04L29/08 ,  G06F3/06

CPC classification number: G06F15/17331 ,  G06F3/0619 ,  G06F3/065 ,  G06F3/067 ,  H04L67/1008

Abstract: In accordance with an embodiment, described herein is a system and method for enabling persistence of application data, using replication over a remote direct memory access (RDMA) network. In an enterprise application server or other environment having a plurality of processing nodes, a replicated store enables application data to be written using remote direct memory access to the random access memory (RAM) of a set of nodes, which avoids single points of failure. Replicated store daemons allocate and expose memory to client applications via network endpoints, at which data operations such as reads and writes can be performed, in a manner similar to a block storage device. Resilvering can be used to copy data from one node to another, if it is determined that the number of data replicas within a particular set of nodes is not sufficient to meet the persistence requirements of a particular client application.

Abstract translation: 根据一个实施例，这里描述了一种用于通过远程直接存储器访问（RDMA）网络使用复制来实现应用数据的持久化的系统和方法。 在具有多个处理节点的企业应用服务器或其他环境中，复制存储使得能够使用远程直接存储器访问应用数据来写入一组节点的随机存取存储器（RAM），这避免了单点故障。 复制的商店守护进程通过网络端点分配和暴露内存给客户端应用程序，在这些端点上可以以类似于块存储设备的方式执行诸如读取和写入的数据操作。 如果确定特定节点集合内的数据副本的数量不足以满足特定客户端应用程序的持久性要求，则可以使用Resilvering将数据从一个节点复制到另一个节点。