公开(公告)号：US20170123787A1

公开(公告)日：2017-05-04

申请号：US14929085

申请日：2015-10-30

Applicant: SAP SE

Inventor： Erwin Burkhardt ,  Martin Hartig ,  Christoph Luettge ,  Heiko Konrad ,  Christian Lutter ,  Martin Mayer ,  Steffen Meissner ,  Matthias Mittelstein ,  Juergen Specht ,  Volker Driesen

IPC: G06F9/445

CPC classification number: G06F8/66 ,  G06F8/656

Abstract: A zero downtime upgrade procedure is initiated that upgrades a first version of software executing on a source system comprising at least one source server to a second version of software executing on a target system comprising at least one target server. The source system initially starts operating in a read-write mode. Thereafter, concurrent with the operation of the source system, operation of the target system is initiated in a read-only mode. Operations of the source system are then ceased by ramping down activities of the source system. Upon cessation of operation of the source system, operation of the target system is initiated in a read-write mode.

公开(公告)号：US11354387B1

公开(公告)日：2022-06-07

申请号：US17201730

申请日：2021-03-15

Applicant: SAP SE

Inventor： Bolivar Santos Perez Pereira ,  Martin Hartig

IPC: G06F11/07 ,  G06F21/31 ,  G06F11/14

Abstract: Disclosed herein are system, method, and computer program product embodiments for transitioning virtual systems from one run-level to a next run-level. In an embodiment, a controller may receive a run-level request to transition a computing cluster (e.g., vSystem) from a first run-level to a second run-level. The controller persists a current run-level of the computing cluster as the second run-level in a configuration file. The controller executes a set of actions corresponding to the second run-level to transition the computing cluster from the first run-level to the second-level. A gateway of the computing cluster receives a request to access the computing cluster. The request includes a user's authentication details. The gateway grants or restricts access to the computing cluster based on the type of user attempting to access the computing cluster and the current run-level of the computing cluster as indicated in the configuration file.

公开(公告)号：US10296324B2

公开(公告)日：2019-05-21

申请号：US14929085

申请日：2015-10-30

Applicant: SAP SE

Inventor： Erwin Burkhardt ,  Martin Hartig ,  Christoph Luettge ,  Heiko Konrad ,  Christian Lutter ,  Martin Mayer ,  Steffen Meissner ,  Matthias Mittelstein ,  Juergen Specht ,  Volker Driesen

IPC: G06F8/656 ,  G06F8/65

Abstract: A zero downtime upgrade procedure is initiated that upgrades a first version of software executing on a source system comprising at least one source server to a second version of software executing on a target system comprising at least one target server. The source system initially starts operating in a read-write mode. Thereafter, concurrent with the operation of the source system, operation of the target system is initiated in a read-only mode. Operations of the source system are then ceased by ramping down activities of the source system. Upon cessation of operation of the source system, operation of the target system is initiated in a read-write mode.