公开(公告)号：US07024420B2

公开(公告)日：2006-04-04

申请号：US10135652

申请日：2002-04-30

Applicant: Linda S. Ball ,  William R. Cunningham ,  Stanley James Dee ,  Thomas G. Price

Inventor： Linda S. Ball ,  William R. Cunningham ,  Stanley James Dee ,  Thomas G. Price

IPC: G06F17/30

CPC classification number: G06F17/30286 ,  G06F3/0601 ,  G06F2003/0697 ,  Y10S707/99942 ,  Y10S707/99943

Abstract: Techniques to provide run-time access to a database image through a target database management system (DBMS) are described. An empty database in the target DBMS (the “target database”) is created having substantially the same schema as the database image. At run-time, queries directed to the target database are intercepted and redirected to the database image. Information returned in response to the redirected query is modified so that internal database identifiers retrieved from the database image are replaced with like database identifiers associated with the target database management system. Thus, run-time access to database image content is provided without the need to load the database image's data content into a target database.

公开(公告)号：US07801865B1

公开(公告)日：2010-09-21

申请号：US11968037

申请日：2007-12-31

Applicant: Richard Wayne Cline ,  Stanley James Dee ,  Michel Laviolette ,  Thomas G. Price ,  John Grady Sullivan

Inventor： Richard Wayne Cline ,  Stanley James Dee ,  Michel Laviolette ,  Thomas G. Price ,  John Grady Sullivan

IPC: G06F17/30

CPC classification number: G06F17/30348

Abstract: Methods and systems for providing access to spaces in a database during a recovery process affecting the database. Spaces in the database that are affected by the recovery process are identified and I/O requests sent to a media manager associated with the database are intercepted. If the I/O request is for a read operation to a space affected by the recovery process and the corresponding page has been recovered, the data in the page may be read. If the page has not been recovered, the read operation may be held in a cache until the recovery utility indicates that the page has been recovered. If the I/O request is for a write operation to a space affected by the recovery process, the data may be written to a cache.

Abstract translation: 在影响数据库的恢复过程中提供对数据库空间的访问的方法和系统。 识别受恢复过程影响的数据库中的空间，并且发送到与数据库关联的媒体管理器的I / O请求被拦截。 如果I / O请求用于对受恢复过程影响的空间的读取操作，并且相应的页面已被恢复，则可能会读取页面中的数据。 如果页面尚未恢复，则读取操作可以保存在缓存中，直到恢复实用程序指示页面已被恢复。 如果I / O请求用于对受恢复过程影响的空间的写入操作，则可将数据写入高速缓存。