多项选择题

In which three cases does a checkpoint occur？（）

A.Every three minutes.
B.When a log switch occurs.
C.When forces by an administrator.
D.When a tablespace is taken offline normal.
E.When the redo buffer is one-third full.

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What is true regarding direct-load insert？（）

A.A direct-load insert can be invoked by suing the APPEND hint.
B.Inserting using the NOLOGGING option is the default for direct-load inserts.
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D.An object that is modifies using parallel direct-load can be queried within the same Transaction.

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A web browser can connect directly to an Oracle server using which two？（）

A.HTTP
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Which RMAN command do you use to verify that the RMAN repository information is synchronized with the actual files that exist on disk？（）

A.LIST
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In which three cases does a checkpoint occur？ （）

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In which three cases does a checkpoint occur？（）