公开(公告)号：US20160371357A1

公开(公告)日：2016-12-22

申请号：US14871675

申请日：2015-09-30

Applicant: SAP SE

Inventor： Chang Gyoo Park ,  Juchang Lee ,  Kyu Hwan Kim ,  Hyoung Jun Na ,  Hyejeong Lee

IPC: G06F17/30

CPC classification number: G06F17/30578 ,  G06F11/1451 ,  G06F17/30362 ,  G06F17/30377 ,  G06F17/30545 ,  G06F17/30598 ,  G06F17/30864

Abstract: Technologies are described for performing replication within a database environment. Where a database transaction is replicated at multiple replica nodes, a replica node is selected as a coordinator replica node for the transaction. The other replica node or nodes are designated as follower replica nodes for the transaction. A follower replica node sends the coordinator replica node a precommit notification when the follower replica node has precommitted the transaction. The coordinator replica node sends the follower replica node a postcommit notification to commit the transaction when the transaction has been precommitted by all of the replica nodes to which the transaction is to be replicated.

Abstract translation: 描述了在数据库环境中执行复制的技术。 在数据库事务在多个副本节点上进行复制的情况下，选择副本节点作为事务的协调器副本节点。 其他副本节点或节点被指定为事务的跟随复制节点。 当跟随者复制节点预先提交事务时，跟随者副本节点发送协调器副本节点预先通知。 协调器副本节点发送跟随者副本节点的后期通知，以便在交易已被事务被复制到的所有副本节点事先预先提交时提交事务。

公开(公告)号：US20160364440A1

公开(公告)日：2016-12-15

申请号：US14945296

申请日：2015-11-18

Applicant: SAP SE

Inventor： Juchang Lee ,  Chang Gyoo Park ,  Hyejeong Lee

IPC: G06F17/30 ,  G06F11/14

CPC classification number: G06F17/30377 ,  G06F11/00 ,  G06F11/1474 ,  G06F17/30477 ,  G06F17/30578 ,  G06F2201/80

Abstract: Technologies are provided for reducing or eliminating transaction consistency anomalies that can occur during data replication, such as during database table replication. For example, commit values can be used to coordinate requests so that the requests are not performed on database tables with inconsistent data.

Abstract translation: 提供了技术来减少或消除数据复制期间可能发生的事务一致性异常，例如在数据库表复制期间。 例如，提交值可用于协调请求，以便不对具有不一致数据的数据库表执行请求。