The export operation is performed with data that is consistent up to the specified SCN. If the NETWORK_LINK parameter is specified, then the SCN refers to the SCN of the source database.

Follow following steps to the export database using network-link.

Source database: demo

Target database: uat

Database platform :

Step 1 : Create a tnsnames.ora entry with source database.

Step 2 : Connect to target database

Step 3: Create a directory in target database server where you want to put your dump file and give read-write permission to the oracle user with which you want to take expdp backup.

Step 4 : Create a database link with tnsnames.ora entry we mentioned earlier.

Step 5 : Take backup using expdp with netwok_link parameter

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