公开(公告)号：US20140281272A1

公开(公告)日：2014-09-18

申请号：US13801319

申请日：2013-03-13

Applicant: ORACLE INTERNATIONAL CORPORATION

Inventor： Juan R. Loaiza ,  Kothanda Umamageswaran ,  David Friedman ,  Jia Shi ,  Zuoyu Tao ,  Alex Tsukerman

IPC: G06F12/08

CPC classification number: G06F12/0868 ,  G06F11/2058 ,  G06F11/2082 ,  G06F12/0804 ,  G06F12/12 ,  G06F2212/222 ,  G06F2212/262 ,  G06F2212/286

Abstract: No-loss rapid recovery performs resynchronization efficiently while concurrently allowing availability to mirrored data on the storage device. No-loss rapid recovery has two stages and involves storage devices that have both a non-volatile cache and primary storage and that operate as mirror buddies. The first stage is referred to herein as the buddy-retention stage. During the buddy-retention stage, writes to mirrored data are not performed on the offline mirror buddy but are performed on the online mirror buddy. The mirrored data changed in the online mirrored buddy is retained in the non-volatile cache of the retention buddy. The next stage is referred to herein as the rapid resynchronization stage. In this stage, the changed mirrored data retained by the retention buddy for no-loss rapid recovery is used to resynchronize the offline buddy. The storage device is resynchronized using the changed mirrored data retained in the cache of the mirror buddy.

Abstract translation: 无损失快速恢复有效地执行重新同步，同时允许可用性在存储设备上镜像数据。 无损快速恢复有两个阶段，涉及具有非易失性缓存和主存储并且作为镜像伙伴操作的存储设备。 第一阶段在本文中称为保留阶段。 在好友保留期间，对镜像数据的写入不会在离线镜像伙伴上执行，而是在在线镜像伙伴上执行。 在线镜像伙伴中更改的镜像数据保留在保留伙伴的非易失性缓存中。 下一阶段在本文中被称为快速再同步化阶段。 在这个阶段，由保留伙伴保留的无损失快速恢复所更改的镜像数据用于重新同步脱机伙伴。 使用保留在镜像伙伴缓存中的已更改的镜像数据重新同步存储设备。

公开(公告)号：US09898490B2

公开(公告)日：2018-02-20

申请号：US14313984

申请日：2014-06-24

Applicant: Oracle International Corporation

Inventor： Umesh Panchaksharaiah ,  Krishnan Meiyyappan ,  Kothanda Umamageswaran ,  Alex Tsukerman ,  Semen Ustimenko ,  Adrian Ng ,  Devang Mundhra ,  Yinian Qi

IPC: G06F17/30

CPC classification number: G06F17/30339 ,  G06F17/30289

Abstract: Techniques are described herein for supporting multiple versions of a database server within a database machine comprising a separate database layer and storage layer. In an embodiment, the database layer includes compute nodes each hosting one or more instances of a database server. The storage layer includes storage nodes each hosting one or more instances of a storage server, also referred to herein as a “cell server.” In general, the database servers may receive data requests, such as SQL queries, from client applications and service the requests in coordination with the cell servers of the storage layer.

公开(公告)号：US09715517B2

公开(公告)日：2017-07-25

申请号：US14313984

申请日：2014-06-24

Applicant: Oracle International Corporation

Inventor： Umesh Panchaksharaiah ,  Krishnan Meiyyappan ,  Kothanda Umamageswaran ,  Alex Tsukerman ,  Semen Ustimenko ,  Adrian Ng ,  Devang Mundhra ,  Yinian Qi

IPC: G06F17/30

Abstract: Techniques are described herein for supporting multiple versions of a database server within a database machine comprising a separate database layer and storage layer. In an embodiment, the database layer includes compute nodes each hosting one or more instances of a database server. The storage layer includes storage nodes each hosting one or more instances of a storage server, also referred to herein as a “cell server.” In general, the database servers may receive data requests, such as SQL queries, from client applications and service the requests in coordination with the cell servers of the storage layer.

公开(公告)号：US20150088880A1

公开(公告)日：2015-03-26

申请号：US14313984

申请日：2014-06-24

Applicant: Oracle International Corporation

Inventor： Umesh Panchaksharaiah ,  Krishnan Meiyyappan ,  Kothanda Umamageswaran ,  Alex Tsukerman ,  Semen Ustimenko ,  Adrian Ng ,  Devang Mundhra ,  Yinian Qi

IPC: G06F17/30

CPC classification number: G06F17/30339 ,  G06F17/30289

Abstract: Techniques are described herein for supporting multiple versions of a database server within a database machine comprising a separate database layer and storage layer. In an embodiment, the database layer includes compute nodes each hosting one or more instances of a database server. The storage layer includes storage nodes each hosting one or more instances of a storage server, also referred to herein as a “cell server.” In general, the database servers may receive data requests, such as SQL queries, from client applications and service the requests in coordination with the cell servers of the storage layer.

Abstract translation: 这里描述了用于支持数据库机器中的多个版本的技术，该数据库机器包括单独的数据库层和存储层。 在一个实施例中，数据库层包括每个托管数据库服务器的一个或多个实例的计算节点。 存储层包括每个托管存储服务器的一个或多个实例的存储节点，在本文中也称为“小区服务器”。通常，数据库服务器可以从客户端应用接收诸如SQL查询的数据请求，并且服务于 请求与存储层的单元服务器协调。

公开(公告)号：US10380021B2

公开(公告)日：2019-08-13

申请号：US13801319

申请日：2013-03-13

Applicant: Oracle International Corporation

Inventor： Juan R. Loaiza ,  Kothanda Umamageswaran ,  David Friedman ,  Jia Shi ,  Zuoyu Tao ,  Alex Tsukerman

IPC: G06F12/0868 ,  G06F12/0804 ,  G06F11/20 ,  G06F12/12

Abstract: No-loss rapid recovery performs resynchronization efficiently while concurrently allowing availability to mirrored data on the storage device. No-loss rapid recovery has two stages and involves storage devices that have both a non-volatile cache and primary storage and that operate as mirror buddies. The first stage is referred to herein as the buddy-retention stage. During the buddy-retention stage, writes to mirrored data are not performed on the offline mirror buddy but are performed on the online mirror buddy. The mirrored data changed in the online mirrored buddy is retained in the non-volatile cache of the retention buddy. The next stage is referred to herein as the rapid resynchronization stage. In this stage, the changed mirrored data retained by the retention buddy for no-loss rapid recovery is used to resynchronize the offline buddy. The storage device is resynchronized using the changed mirrored data retained in the cache of the mirror buddy.