How to fix the Oracle error ORA-19165: FONS0003: no prefix defined for namespace?

In this post, you’ll learn more about the Oracle ErrorORA-19165: FONS0003: no prefix defined for namespace with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-19165: FONS0003: no prefix defined for namespace

Reason for the Error ORA-19165: FONS0003: no prefix defined for namespace

There was a zero-length URI in namespace declaration.

How to fix the Error ORA-19165: FONS0003: no prefix defined for namespace ?

You can fix this error in Oracle by following the below steps

Fix the namespace declaration.

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