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Oracle Database 12c Backup and Recovery Survival Guide

Data Pump uses different methods to move the data in and out of a database; it can use the following methods:
Datafile copy
Direct path
External tables
Conventional path
Network link
Now let's take a closer look at each one of these methods.
This is the quickest way to transport an entire tablespace to a target system; all you will need to do is transfer the tablespace's underlying files to the target environment. With this method, Data Pump export is used to unload only structural information (metadata) into the dump file.
When using this option, firstly always check if the database character set is the same in the source and target databases and they must also be at same time zone version.
For a tablespace to be transported to a target system, it must be self-contained. Use the TRANSPORT_SET_CHECK
procedure in the DBMS_TTS
package to determine whether you are moving a self-contained tablespace (or tablespaces). You must have been granted the EXECUTE_CATALOG_ROLE...
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