公开(公告)号：US10452636B2

公开(公告)日：2019-10-22

申请号：US15361760

申请日：2016-11-28

Applicant: SAP SE

Inventor： Kyu Hwan Kim ,  Juchang Lee ,  Beomsoo Kim ,  Chang Gyoo Park ,  Reiner Singer ,  Christoph Rottering ,  Werner Thesing ,  Michael Muehle

IPC: G06F16/00 ,  G06F16/23 ,  G06F16/245 ,  G06F16/27

Abstract: A computer implemented method is provided comprising receiving a group of transaction logs from a first database, allocating transaction logs from the group of transaction logs to a first queue and to a second queue, generating an end-of-group transaction log indicative of an end of the group of transaction logs, allocating the end-of-group log to the first queue and the second queue; replaying transaction logs from the first queue including the end-of-group transaction log allocated to the first queue, replaying transaction logs from the second queue including the end-of-group transaction log allocated to the second queue; and changing visibility of one or more transactions in response to replaying the end-of-group transaction log allocated to the first queue and the end-of-group transaction log allocated to the second queue. Related apparatus, systems, techniques and articles are also described.

公开(公告)号：US20180150496A1

公开(公告)日：2018-05-31

申请号：US15361760

申请日：2016-11-28

Applicant: SAP SE

Inventor： Kyu Hwan Kim ,  Juchang Lee ,  Beomsoo Kim ,  Chang Gyoo Park ,  Reiner Singer ,  Christoph Rottering ,  Werner Thesing ,  Michael Muehle

IPC: G06F17/30

CPC classification number: G06F16/2322 ,  G06F16/2365 ,  G06F16/2379 ,  G06F16/2386 ,  G06F16/245 ,  G06F16/27 ,  G06F16/273

Abstract: A computer implemented method is provided comprising receiving a group of transaction logs from a first database, allocating transaction logs from the group of transaction logs to a first queue and to a second queue, generating an end-of-group transaction log indicative of an end of the group of transaction logs, allocating the end-of-group log to the first queue and the second queue; replaying transaction logs from the first queue including the end-of-group transaction log allocated to the first queue, replaying transaction logs from the second queue including the end-of-group transaction log allocated to the second queue; and changing visibility of one or more transactions in response to replaying the end-of-group transaction log allocated to the first queue and the end-of-group transaction log allocated to the second queue. Related apparatus, systems, techniques and articles are also described.

公开(公告)号：US20180307718A1

公开(公告)日：2018-10-25

申请号：US15496957

申请日：2017-04-25

Applicant: SAP SE

Inventor： Dirk Thomsen ,  Christoph Rottering ,  Werner Thesing

IPC: G06F17/30 ,  G06F11/14 ,  G06F11/07 ,  G06F11/34 ,  G06F17/40

CPC classification number: G06F16/2358 ,  G06F11/0766 ,  G06F11/1471 ,  G06F11/1474 ,  G06F11/1662 ,  G06F11/2035 ,  G06F11/2097 ,  G06F11/3476 ,  G06F16/27 ,  G06F17/40 ,  G06F2201/80 ,  G06F2211/1038

Abstract: Each of a plurality of database transactions are logged (i.e., recorded) in a log. Concurrent with the logging, one or more characteristics of the log are monitored. Thereafter, a savepoint is triggered when a pre-defined condition is met as indicated by the monitoring. The triggered savepoint can override or accelerate a savepoint that would have otherwise been triggered based on pre-specified parameters.