公开(公告)号：US20190026352A1

公开(公告)日：2019-01-24

申请号：US15654028

申请日：2017-07-19

Applicant: SAP SE

Inventor： Nandan MARATHE ,  Anant Agarwal ,  Sagar Ranadive ,  Dipesh Pandit

IPC: G06F17/30

Abstract: Disclosed herein are system, method, and computer program product embodiments for replication of database. In one embodiment, one or more data pages generated from a transaction are obtained at a first node. The one or more data pages are compressed. The compressed data pages are added into a first queue in a memory of the first node. The first queue includes a plurality of blocks. A first block of the compressed data pages in the first queue is transmitted to a second node when the first block of the compressed data pages becomes available for replication. The first block of the compressed data pages is stored in a persistent storage of the first node.

公开(公告)号：US11593352B2

公开(公告)日：2023-02-28

申请号：US17197693

申请日：2021-03-10

Applicant: SAP SE

Inventor： Mohammed Abouzour ,  Gunes Aluc ,  Ivan Bowman ,  Xi Deng ,  Nandan Marathe ,  Sagar Ranadive ,  Muhammed Sharique ,  John Smirnios

IPC: G06F16/00 ,  G06F16/23 ,  G06F16/28

Abstract: Systems and methods include determination of a first logical page number of a first database page to be persisted, identification of a first blockmap page associated with the first logical page number, determination, from the first blockmap page, of a block number associated with the first logical page number, determination that the block number is an object key, determination, in response to the determination, that the block number is an object key, determination of a first object key to associate with the first logical page number, and writing of the first database page to the object store using the first object key.

公开(公告)号：US11157511B2

公开(公告)日：2021-10-26

申请号：US15654028

申请日：2017-07-19

Applicant: SAP SE

Inventor： Nandan Marathe ,  Anant Agarwal ,  Sagar Ranadive ,  Dipesh Pandit

IPC: G06F16/27 ,  G06F16/907 ,  G06F16/182

Abstract: Disclosed herein are system, method, and computer program product embodiments for replication of database. In one embodiment, one or more data pages generated from a transaction are obtained at a first node. The one or more data pages are compressed. The compressed data pages are added into a first queue in a memory of the first node. The first queue includes a plurality of blocks. A first block of the compressed data pages in the first queue is transmitted to a second node when the first block of the compressed data pages becomes available for replication. The first block of the compressed data pages is stored in a persistent storage of the first node.