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- W3148896872 abstract "We describe an efficient method for supporting incremental and full archiving of data bases (e.g., individual files). Customers archive their data bases quite frequently to minimize the duration of data outage. Because of the growing sizes of data bases and the ever increasing need for high availability of data, the efficiency of the archive copy utility is very important. The method presented here minimizes interferences with concurrent transactions by not acquiring any locks on the data being copied. It significantly reduces disk I/Os by not keeping on data pages any extra tracking information in connection with archiving. These features make the archive copy operation be more efficient in terms of resource consumption compared to other methods. The method is also flexible in that it optionally supports direct copying of data from disks, bypassing the DBMS's buffer pool. This reduces buffer pool pollution and processing overheads, and allows the utility to take advantage of device geometries for efficiently retrieving data. We also describe extensions to the method to accommodate the multisystem shared disks transaction environment. The method tolerates gracefully system failures during the archive copy operation." @default.
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- W3148896872 date "1993-06-01" @default.
- W3148896872 modified "2023-10-17" @default.
- W3148896872 title "An efficient and flexible method for archiving a data base" @default.
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- W3148896872 doi "https://doi.org/10.1145/170036.170064" @default.
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