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How to solve ORA-12529 TNS:connect Request Rejected based on current filtering rules

We have two Oracle Autonomous Databases, one running 19c and the other 23c. A DBLink has been created from the 23c database to the 19c database. When attempting to retrieve table information from the source via the DBLink on the target side, I am encountering the following error “ORA-12529 TNS:connect Request Rejected based on current filtering rules”

Can someone please help what is missing here.

Regards

Neha

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Added on Feb 4 2025
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