公开(公告)号：US10275508B2

公开(公告)日：2019-04-30

申请号：US14946757

申请日：2015-11-19

Applicant: SAP SE

Inventor： Christian Bensberg ,  Norman May ,  Alexander Boehm ,  Juchang Lee ,  Sung Heun Wi ,  Jeong Ae Han ,  Ki Hong Kim ,  Kyu Hwan Kim ,  Chul Won Lee ,  Andreas Kemmler ,  Christoph Glania ,  Armin Risch ,  Kai Morich

IPC: G06F17/30

Abstract: A method may include receiving a query for data to be provided by a database server, wherein the query includes an indication of a maximum lag. The method may further include determining whether a hint is available to apply to the query, wherein the hint affects an execution of the query. When no hint is available, a baseline database server may be selected to be the database server. When the hint is available, a replication server or a cache server may be selected to be the database server based on the hint and the maximum lag. The query may be processed at the selected database server.

公开(公告)号：US20170147671A1

公开(公告)日：2017-05-25

申请号：US14946757

申请日：2015-11-19

Applicant: SAP SE

Inventor： Christian Bensberg ,  Norman May ,  Alexander Boehm ,  Juchang Lee ,  Sung Heun Wi ,  Jeong Ae Han ,  Ki Hong Kim ,  Kyu Hwan Kim ,  Chul Won Lee ,  Andreas Kemmler ,  Christoph Glania ,  Armin Risch ,  Kai Morich

IPC: G06F17/30

CPC classification number: G06F17/30578 ,  G06F17/3048

Abstract: A method may include receiving a query for data to be provided by a database server, wherein the query includes an indication of a maximum lag. The method may further include determining whether a hint is available to apply to the query, wherein the hint affects an execution of the query. When no hint is available, a baseline database server may be selected to be the database server. When the hint is available, a replication server or a cache server may be selected to be the database server based on the hint and the maximum lag. The query may be processed at the selected database server.