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A. com - 34 - 1z0-031 B. Database blocks C. Tablespaces D. Operating system blocks Answer: B Segments and extents are composed of data blocks, and in turn, the blocks are taken together to comprise a datafile. Incorrect Answers A: A segments is an allocation of space used to store the data of a table, index, undo segment, or temporary object. C: A tablespace is a logical structure that is designed to store other logical database structures. Oracle sees a tablespace as a large area of space into which Oracle can place new objects.

Incorrect Answers A: Regular tables can be also queried or manipulated using parallel processing, but the gain of partitioned tables is more significant. B: Clustered tables cannot be manipulated using several processes concurrently because they contain some blocks as a common part for two or more tables. Also there is no sense to build clusters on the large tables with high level of inserts, updates and deletes. D: Index-organized tables are particularly useful for data that is mostly retrieved based on primary key.

C: Partition table is not very good for range searches because of partition model usage. OCA Oracle 9i Associate DBA Certification Exam Guide, Jason Couchman, p. com - 60 - 1z0-031 QUESTION NO: 73 You need to shut down your database. You want all of the users who are connected to be able to complete any current transactions. Which shutdown mode should you specify in the SHUTDOWN command? A. B. C. D. ABORT NORMAL IMMEDIATE TRANSACTIONAL Answer: D The SHUTDOWN TRANSACTIONAL command will wait till all users who are connected to the database complete any current transactions.

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