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Question :


What does the parameter DIRECT=Y in the export parameter file signify?
a. When exporting table data, bypass the SQL buffer cache and read the data blocks directly form the disk to the export file.
b. When exporting table data, bypass the SQL processing layer and read data from disk to the buffer cache, and copy them directly to the export files
c. When importing data using the export file create, write data blocks directly to the file, rather than going through the buffer.
d. To perform a direct import, the export file must be created sing the direct method.


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Answers:

Source: CoolInterview.com


B. Direct-path export bypasses the SQL statement processing layer. In a conventional export, SELECT statements are used to read data blocks from the table to the buffer cache, and after SQL processing the rows are written to the export file.

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