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OCP 1Z0 052 V8 02 100題

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100. In which situations does the Oracle Data Pump use external tables and not the direct path load while

exporting a table? (Choose all that apply.)

A.if a table is not in a cluster

B.if a table has an active trigger

C.if a table has an encrypted

D.if a table has a column of data type LONG defined on it

E.if a table has a referential integrity constraint defined on it  

Answer: BCE  

答案解析:

參考:http://docs.oracle.com/cd/E11882_01/server.112/e22490/dp_overview.htm#SUTIL2879



Situations in Which Direct Path Load Is Not Used

If any of the following conditions exist for a table, then Data Pump uses external tables rather than direct path to load the data for that table:

  • A global index on multipartition tables exists during a single-partition load. This includes object tables that are partitioned.

  • A domain index exists for a LOB column.

  • A table is in a cluster.

  • There is an active trigger on a preexisting table.

  • Fine-grained access control is enabled in insert mode on a preexisting table.

  • A table contains BFILE columns or columns of opaque types.

  • A referential integrity constraint is present on a preexisting table.

  • A table contains VARRAY columns with an embedded opaque type.

  • The table has encrypted columns.

  • The table into which data is being imported is a preexisting table and at least one of the following conditions exists:

    • There is an active trigger

    • The table is partitioned

    • Fine-grained access control is in insert mode

    • A referential integrity constraint exists

    • A unique index exists

  • Supplemental logging is enabled and the table has at least one LOB column.

  • The Data Pump command for the specified table used the QUERYSAMPLE, or REMAP_DATA parameter.

  • A table contains a column (including a VARRAY column) with a TIMESTAMP WITH TIME ZONE datatype and the version of the time zone data file is different between the export and import systems.

           

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