发明名称 |
Method and apparatus for interrupting updates to a database to provide read-only access |
摘要 |
A method and system for suspending log-based updates to a database in a manner that permits resumption of log-based updating without reinitializing the database. The method and system thereby permit efficient alternation between a log-based update mode and a database access mode. Unplayed log records are protected as revisions of database pages at the time that the log-based update was suspended. This approach permits log-based updating to resume at the same point at which log-based updating was suspended. In order to ensure consistent data for access while in database access mode, a roll-back procedure creates consistent data pages that are used for access and discarded when log-based update resumes.
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申请公布号 |
US2004181560(A1) |
申请公布日期 |
2004.09.16 |
申请号 |
US20040752026 |
申请日期 |
2004.01.07 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
ROMANUFA KERILEY K.;GOSS JEFFREY J.;HURAS MATTHEW A.;MCARTHUR CATHERINE S.;MCINNIS DALE M.;WINER MICHAEL J.;ZHENG ROGER L. Q. |
分类号 |
G06F17/30;(IPC1-7):G06F17/30 |
主分类号 |
G06F17/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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