How to fix the Oracle error TNS-00503: Illegal ADDRESS parameters?

In this post, you’ll learn more about the Oracle ErrorTNS-00503: Illegal ADDRESS parameters with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

TNS-00503: Illegal ADDRESS parameters

Reason for the Error TNS-00503: Illegal ADDRESS parameters

Cause: An illegal set of protocol adapter parameters was specified.

How to fix the Error TNS-00503: Illegal ADDRESS parameters ?

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

Action: Check the parameters within the ADDRESS section of the TNSNAMES.ORA file. It may be helpful to turn on tracing and look at the addresses specified in the trace file, checking for spelling or other errors. Be sure to turn tracing off when the trace is complete.