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Exam 1z0-062 topic 1 question 6 discussion

Actual exam question from Oracle's 1z0-062
Question #: 6
Topic #: 1
[All 1z0-062 Questions]

Which two statements are true about the logical storage structure of an Oracle database? (Choose two.)

  • A. An extent contains data blocks that are always physically contiguous on disk.
  • B. An extent can span multiple segments.
  • C. Each data block always corresponds to one operating system block.
  • D. It is possible to have tablespaces of different block sizes.
  • E. A data block is the smallest unit of I/O in data files.
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Suggested Answer: DE 🗳️
References:
by Desmon2175 at Sept. 15, 2020, 11:33 a.m.

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_Cobra_
2 years, 10 months ago
D&E is correct
upvoted 1 times
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Grace1_2239478234
3 years ago
D cannot be correct as you choose the block size per database not per tablespace - AE You set the data block size for each Oracle database when you create the database.
upvoted 1 times
NorwayOracle
2 years, 11 months ago
D is correct. From the documentation: Use the BLOCKSIZE clause of the CREATE TABLESPACE statement to create a tablespace with a block size different from the database standard block size. In order for the BLOCKSIZE clause to succeed, you must have already set the DB_CACHE_SIZE and at least one DB_nK_CACHE_SIZE initialization parameter.
upvoted 1 times
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nathansoc
4 years ago
entity-relationship diagram for physical and logical storage. The crow's foot notation represents a one-to-many relationship.
upvoted 1 times
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nathansoc
4 years ago
https://docs.oracle.com/cd/E11882_01/server.112/e40540/img/cncpt227.gif
upvoted 1 times
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Desmon2175
4 years, 5 months ago
D,E correct
upvoted 4 times
JMAN1
4 years ago
reference - https://docs.oracle.com/cd/A87860_01/doc/server.817/a76965/c02block.htm
upvoted 2 times
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