Invention Grant
US08495282B2 Flash-aware storage optimized for mobile and embedded DBMS on NAND flash memory
有权
闪存感知存储优化用于NAND闪存上的移动和嵌入式DBMS
- Patent Title: Flash-aware storage optimized for mobile and embedded DBMS on NAND flash memory
- Patent Title (中): 闪存感知存储优化用于NAND闪存上的移动和嵌入式DBMS
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Application No.: US12945106Application Date: 2010-11-12
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Publication No.: US08495282B2Publication Date: 2013-07-23
- Inventor: SangCheol Lee , BongSoo Ko , HyungGook Yoo , SongHee Kang
- Applicant: SangCheol Lee , BongSoo Ko , HyungGook Yoo , SongHee Kang
- Applicant Address: US CA Redwood Shores
- Assignee: Oracle International Corporation
- Current Assignee: Oracle International Corporation
- Current Assignee Address: US CA Redwood Shores
- Agency: Kilpatrick Townsend & Stockton LLP
- Main IPC: G06F12/00
- IPC: G06F12/00

Abstract:
Reliable storage for database management systems (DBMS) running on memory devices such as NAND type flash memory utilizes minimum I/O overhead and provides maximum data durability. A virtual page map is utilized between the flash memory and a page access component to record changes to the DBMS pages and prevent overwriting or data loss. There is no need for journaling and logging, and performance is increased by reducing the write and erase counts on the flash memory. The logical page numbers of the DBMS are mapped to physical page numbers in the page map, such that the virtual page map allocates an available page from the physical pages when changes to a page occur, and the updated information is stored in the allocated page. The allocated page number is mapped to the logical page number of the original page, thus maintaining a modified page representation while preventing physical in-place updates.
Public/Granted literature
- US20110167200A1 FLASH-AWARE STORAGE OPTIMIZED FOR MOBILE AND EMBEDDED DBMS ON NAND FLASH MEMORY Public/Granted day:2011-07-07
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