Method for file deletion and recovery against system failures in database management system
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United States of America Patent
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Sep 13, 2005
Grant Date -
Jul 3, 2003
app pub date -
Jun 20, 2002
filing date -
Dec 28, 2001
priority date (Note) -
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Abstract
A method for file deletion and recovery against system failures in a database management system comprising steps of deleting files listed in a pending action list during a transaction commit process, writing a non-atomic file deletion as an atomic operation into a log and recovering uncompleted file deletion during restart recovery by using the log is disclosed. When system failures occur during file deletion in a database management system, resources of which releasing is interrupted by failures are released perfectly through recovery step, so it is advantageous in that coherency of data is maintained and efficiency of storage device arises.
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