You are using flat files as the data source for one of your data warehousing applications. To optimize
the application performance, you plan to move the data from the flat files to clustered tables in an
Oracle database. While migrating the data, you want to have minimal impact on the database
performance and optimize the data load operation. Which method would you use to load data into
the Oracle database?
A.
Use the external table population.
B.
Use the Oracle Data Pump export and import utility.
C.
Use the conventional path data load of the SQL*Loader utility.
D.
Use the INSERT INTO…SELECT command to load the data.
When to Use a Conventional Path Load
If load speed is most important to you, then you should use direct path load because it is faster than conventional path load. However, certain restrictions on direct path loads may require you to use a conventional path load. You should use a conventional path load in the following situations:
When accessing an indexed table concurrently with the load, or when applying inserts or updates to a nonindexed table concurrently with the load
To use a direct path load (except for parallel loads), SQL*Loader must have exclusive write access to the table and exclusive read/write access to any indexes.
When loading data into a clustered table
A direct path load does not support loading of clustered tables.
clustered table should use conventional load the fast speed