Updating sas datafiles

Direct Path A direct path load does not compete with other users for database resources.It eliminates much of the Oracle database overhead by formatting Oracle data blocks and writing them directly to the database files, bypassing much of the data processing that normally takes place.SQL*Loader loads data from external datafiles into tables of an Oracle database.A particular datafile can be in fixed record format, variable record format, or stream record format (the default).Note: Data Pump Export and Data Pump Import do not support XMLType data.If you need to export and import XMLType data, use the Export and Import options described in "Exporting and Importing Data with the Export and Import Utilities". If your data contains these types and does not contain XMLType data, you must use Data Pump Export and Import, described in "Exporting and Importing with Data Pump Export and Data Pump Import".Because the dump files are written by the database, rather than by the Data Pump client application, you must create is a database object that is an alias for a directory in the host operating system's file system.

The version of the Import utility cannot be earlier than the version of the Export utility used to create the dump file.This allows export and import operations to run concurrently, minimizing total elapsed time.Data Pump Export and Import also provide a set of interactive commands so that you can monitor and modify ongoing export and import jobs.The files are written in a proprietary, binary format, which means that the dump file set can be imported only by the Data Pump Import utility.The dump file set can be imported to the same database or it can be moved to another system and loaded into the Oracle database there.

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