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Oracle

1Z0-027 · Question #72

1Z0-027 Question #72: Real Exam Question with Answer & Explanation

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Question

You are monitoring and evaluating a create index statement on your Database Machine and have run the following query after executing statement, providing the output. Shown: Select two reasons why the statement would have produced so many "cell single block physical read" waits compared to "cell smart table scan" waits.

Exhibit

1Z0-027 question #72 exhibit

Options

  • AThere are huge numbers of migrated rows in the table on which the index is being built.
  • BThere is an uncommitted transaction that has modified one block of the table on which the index is being
  • CThere is a transaction that has modified one block of the table on which the index is being built in each cell,
  • DThere are huge numbers of chained rows in the table on which the index is being built.
  • EThere is a ROWID column in the table on which the index is being built.

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