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OCA Oracle Database 12c Installation and Administration Exam Guide (Exam 1Z0-062), 2nd Edition by John Watson

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CERTIFICATION OBJECTIVES
    image   Two-Minute Drill
An Oracle server consists of two entities: the instance and the database. The instance is memory structures and processes, whereas the database is files on disk. Within the Oracle server there is complete abstraction of logical storage from physical storage. The logical ...

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