1. |
Why are password files necessary?
Please select the best answer.
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A. |
There is no room in the database for passwords to be stored. |
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B. |
They allow DBAs to be authenticated when the database is closed. |
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C. |
Reading a password file is more efficient than reading a password from the database.
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D. |
They avoid the overhead of generating redo log entries when a password is changed.
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Answer B is correct.
Normal user passwords are stored in the database files and are accessible only when the database is open.
DBAs need to connect to an instance even when the database is closed. Password files allow this to happen because they are accessible regardless of a database’s state.
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