The Data Pump architecture
Data Pump has a very simple mechanism that can interact with many other interfaces such as, Oracle Enterprise Manager and custom interfaces, and it is basically made up of three unique parts; they are:
- The command-line interfaces,
expdp
andimpdp
- The
DBMS_DATAPUMP
package, also known as the Data Pump API - The
DBMS_METADATA
package, also known as the Metadata API
As you can easily see in the following figure, the command-line interfaces, expdp
and impdp
, uses the DBMS_DATAPUMP
package to execute the export and import operations using all the parameters passed in by the user in the command line. When metadata needs to be manipulated, it uses the DBMS_METADATA
package to extract, manipulate, and also to recreate the dictionary ...
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