In this chapter, we explored the important types of files used by the Oracle database, from slowly parameter files (without which you won’t even be able to get started) to the all important redo log and data files. We examined the storage structures of Oracle from tablespaces to segments, and then extents, and finally down to database blocks, the smallest unit of storage. We reviewed how checkpointing works in the database, and we even started to look ahead at what some of the physical processes or threads of Oracle do.
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