OCP 1Z0 052 98

98. Which two statements are true regarding the usage of the SQL*Loader utility? (Choose two.) 
A.You can load data into multiple tables during the same load session. 
B.You can load data from multiple files to a table during the same load session. 
C.You cannot perform selective data loading based on the values available in the records. 
D.You can use an export file generated by the EXPDP utility as an input data file to load the data. 
E.You can load data only if the input file is available on the disk and tape but not in a named pipes. 
Answer: AB

EXPDP 生成的文件是二进制文件，不能通过os读取

SQL*Loader Features

SQL*Loader loads data from external files into tables of an Oracle database. It has a powerful data parsing engine that puts little limitation on the format of the data in the data file. You can use SQL*Loader to do the following:

• Load data across a network if your data files are on a different system than the database. (See Loading Data Across a Network)

• Load data from multiple data filesduring the same load session.

• Load data into multiple tables during the same load session.

• Specify the character set of the data.

• Selectively load data (you can load records based on the records' values).

• Manipulate the data before loading it, using SQL functions.

• Generate unique sequential key values in specified columns.

• Use the operating system's file system to access the data files.

• Load data from disk, tape, or named pipe.

• Generate sophisticated error reports, which greatly aid troubleshooting.

• Load arbitrarily complex object-relational data.

• Use secondary data files for loading LOBs and collections.

• Use either conventional or direct path loading. While conventional path loading is very flexible, direct path loading provides superior loading performance. See Chapter 12.