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：US20170212939A1

公开(公告)日：2017-07-27

申请号：US15008297

申请日：2016-01-27

Applicant: Oracle International Corporation

Inventor： NILOY MUKHERJEE ,  KARTIK KULKARNI ,  TIRTHANKAR LAHIRI ,  VINEET MARWAH ,  JUAN LOAIZA

IPC: G06F17/30 ,  H04L12/24

CPC classification number: G06F16/2477 ,  H04L41/0668 ,  H04L41/12 ,  H04L43/0817

Abstract: Techniques are described herein for executing queries on distinct portions of a database object that has been separate into chunks and distributed across the volatile memories of a plurality of nodes in a clustered database system. The techniques involve redistributing the in-memory database object portions on changes to the clustered database system. Each node may maintain a mapping indicating which nodes in the clustered database system store which chunks, and timestamps indicating when each mapping entry was created or updated. A query coordinator may use the timestamps to select a database server instance with local in memory access to data required by a portion of a query to process that portion of the query.