公开(公告)号：US20250139015A1

公开(公告)日：2025-05-01

申请号：US18495478

申请日：2023-10-26

Applicant: SAP SE

Inventor： Nishant Vijayvergiya ,  Amit Pathak ,  Sebastian Seifert ,  Thomas Peh ,  Sergej Hardock

IPC: G06F12/1009 ,  G06F12/123

Abstract: In some implementations, there is provided a method that includes configuring a first threshold for page-loadable data at a buffer cache associated with a database; checking the buffer cache to determine usage of the buffer cache by the page-loadable data; in response to the usage of the buffer cache being more than the first threshold, causing a background job to release one or more buffers in the buffer cache; checking, after releasing at least one buffer of the buffer cache, the buffer cache to determine whether usage by the page-loadable data is below the first threshold; in response to the usage being below the first threshold, stopping the release of additional one or more buffers in the buffer cache; and in response to the usage being above the first threshold, continuing the release of the additional one or more buffers in the buffer cache.

公开(公告)号：US12147558B2

公开(公告)日：2024-11-19

申请号：US17968136

申请日：2022-10-18

Applicant: SAP SE

Inventor： Patrick Voelker ,  Holger Mack ,  Meinolf Block ,  Thorsten Glebe ,  Mihnea Andrei ,  Yong Sik Kwon ,  Dirk Thomsen ,  Martin Schindewolf ,  Martin Kittel ,  Myung Sun Park ,  Beomsoo Kim ,  Martin Heidel ,  Christian Bensberg ,  Fabian Garagnon ,  Michael Muehle ,  Sergej Hardock ,  Johannes Beigel ,  Sascha Zorn ,  Christoph Hohner ,  Andreas Hartel

IPC: G06F21/00 ,  G06F21/62 ,  H04L9/08

Abstract: A database system includes a persistent storage system, a memory storing metadata defining a tenant object and a plurality of database artifacts, a first instance of the tenant object, the first instance associated with a first plurality of the database artifacts including first data associated with the first instance of the tenant object, and a second instance of the tenant object, the second instance associated with a second plurality of the database artifacts including second data associated with the second instance of the tenant object. A processing unit is to execute program code of a database instance to cause the database system to encrypt the first data associated with the first instance of the tenant object using a first public encryption key and store the encrypted first data in the persistent storage system, and encrypt the second data associated with the second instance of the tenant object using a second public encryption key and store the encrypted second data in the persistent storage system.