A Oracle Database Backup System with Data De-duplication
Xiangqian Li · Computer Knowledge and Technology · 2013
To solve the problem of vast amount of duplicate data in the data backup server,a oracle database backup system with data de-duplicate is proposed.The system first generates a temporary backup file,then the temporary file is divided into non-over lapping blocks,fingerprint values calculated for each block through hash algorithm.at the disaster recovery center it sets up the hash table to records the stored fingerprint of the data block.By comparing the fingerprint value to detect duplicate data.In order to improve data security,take some security mechanisms to prevent information leaks and data loss.The experiment shows that the system can reduce backup data effectively in the remote backup.