Patent ID: 8315991
Filing Date: 2012-11-20
Classification: G06F

Abstract:
1. A method for automatically detecting at least one inadvertent write to data to restore comprising steps of: receiving a query specifying a corrupt application data set, said set comprising data information about at least one corrupt data object and time information temporally locating said corrupt data object; locating one or more bitmaps for snapshots for said at least one corrupt data object, said one or more bitmaps having at least one bitmap entry indicating whether data previously stored at a corresponding storage location has been modified; locating a transaction log for said at least one corrupt data object based on said time information, said transaction log having at least one transaction log entry; comparing at least one transaction log entry to said at least one bitmap entry for said one or more bitmaps; and detecting an inadvertent write when a change to a bitmap entry does not have a corresponding transaction log entry, wherein said detecting an inadvertent write comprises detecting a snapshot anomaly pattern, the snapshot anomaly pattern existing in a snapshot storage region when there is a probability of change to a database table and no update operation for the snapshot.