公开(公告)号：US20180137113A1

公开(公告)日：2018-05-17

申请号：US15352987

申请日：2016-11-16

Applicant: SAP SE

Inventor： Saskia Kurz ,  Alexander Schroeder ,  Thomas Loetzer ,  Marco Paskamp ,  Kerstin Welk ,  Martin Fei ,  Enno Folkerts ,  Christoph Bautz ,  Tilo Heinrich

IPC: G06F17/30 ,  H04L29/08

CPC classification number: G06F16/214 ,  H04L67/10

Abstract: Methods, systems, and computer-readable storage media for executing a first application on a source system during production use of the source system, providing a second application on a target system, during the production use of the source system: migrating data from the source system to the target system based on a catalog delta, and a data delta, each of the catalog delta, and the data delta being periodically determined, and determining whether a completion time exceeds a threshold time, the completion time being determined based on a last-determined data delta, and, in response to determining that the completion time does not exceed the threshold time: halting production use of the source system, and completing migration to the target system based on the last-determined data delta.

公开(公告)号：US20240086386A1

公开(公告)日：2024-03-14

申请号：US17940904

申请日：2022-09-08

Applicant: SAP SE

Inventor： Hans-Joerg Leu ,  Dan Ding ,  Srinivas Gajjalakonda ,  Fei Qiu ,  Carsten Mueller ,  Alexander Schroeder

IPC: G06F16/22 ,  G06F16/27

CPC classification number: G06F16/2282 ,  G06F16/273 ,  G06F16/278

Abstract: The present disclosure provides more efficient techniques for removing a host from a multi-host database system. An instruction to remove a host system may be received. In response, a determination of whether the first host system does or does not store any source tables is made based on a host-type identifier for the host system. This determination may not require obtaining landscape information for each of the hosts in the database system. If the host system stores replica tables and does not store source tables, those replica tables may be dropped based on the determination that the first host system does not store any source tables. As such, in cases where table redistribution is not needed the landscape information is not obtained, thereby making the host removal process more efficient.

公开(公告)号：US11829337B2

公开(公告)日：2023-11-28

申请号：US15352987

申请日：2016-11-16

Applicant: SAP SE

Inventor： Saskia Kurz ,  Alexander Schroeder ,  Thomas Loetzer ,  Marco Paskamp ,  Kerstin Welk ,  Martin Fei ,  Enno Folkerts ,  Christoph Bautz ,  Tilo Heinrich

IPC: G06F16/20 ,  G06F16/21 ,  H04L67/10

CPC classification number: G06F16/214 ,  H04L67/10

Abstract: Methods, systems, and computer-readable storage media for executing a first application on a source system during production use of the source system, providing a second application on a target system, during the production use of the source system: migrating data from the source system to the target system based on a catalog delta, and a data delta, each of the catalog delta, and the data delta being periodically determined, and determining whether a completion time exceeds a threshold time, the completion time being determined based on a last-determined data delta, and, in response to determining that the completion time does not exceed the threshold time: halting production use of the source system, and completing migration to the target system based on the last-determined data delta.