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In this section I want to cover the DB_VERIFY utility. The DB_VERIFY utility is an external command line-based utility that is used to perform a physical structure integrity check on an offline (shutdown) database. The utility can be used against backup files and online files or pieces of online files. The utility is used to ensure a backup database or datafile is valid before recovery. The utility can also serve as a diagnostic aid when corruption is suspected.       

DB_VERIFY runs against a shutdown database, so it can perform checks significantly faster than export or other utilities. Be aware that the utility is named differently on different platforms; for example, it may be called dbv on Sun, Sequent, Linux, or NT, or something else on your system. Therefore, verify its name with the system-specific documentation you should have received (if you didn’t, call your Oracle rep and complain). The utility only verifies cache-managed blocks.

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