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Exam 1z0-053 topic 17 question 3 discussion

Actual exam question from Oracle's 1z0-053
Question #: 3
Topic #: 17
[All 1z0-053 Questions]

View the Exhibit to examine the error obtained during the I/O calibration process. There are no data files on raw devices. What is the reason for this error?

  • A. The DISK_ASYNCH_IO parameter is set to TRUE.
  • B. The FILESYSTEMIO_OPTIONS parameter is set to NONE.
  • C. Another session runs the I/O calibration process concurrently.
  • D. The pending area has not been created before running the I/O calibration process.
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Suggested Answer: B 🗳️
9.1.1.2 FILESYSTEMIO_OPTIONS Initialization Parameter
You can use the FILESYSTEMIO_OPTIONS initialization parameter to enable or disable asynchronous I/O or direct I/O on file system files. This parameter is platform-specific and has a default value that is best for a particular platform.
FILESYTEMIO_OPTIONS can be set to one of the following values:
ASYNCH: enable asynchronous I/O on file system files, which has no timing requirement for transmission.
DIRECTIO: enable direct I/O on file system files, which bypasses the buffer cache.
SETALL: enable both asynchronous and direct I/O on file system files.
NONE: disable both asynchronous and direct I/O on file system files.
To enable asynch I/O, set two values in the init.ora file (or spfile) and recycle the instances: disk_asynch_io = true filesystemio_options = asynch
The first one is default; so you may not have to change it. The default of the second one is NONE; so you will probably have to change it. After setting these values and recycling the instance,

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