How to fix the Oracle error ORA-12533: TNS:illegal ADDRESS parameters?

In this post, you’ll learn more about the Oracle ErrorORA-12533: TNS:illegal ADDRESS parameters with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-12533: TNS:illegal ADDRESS parameters

Reason for the Error ORA-12533: TNS:illegal ADDRESS parameters

An illegal set of protocol adapter parameters was specified. In some cases, this error is returned when a connection cannot be made to the protocol transport.

How to fix the Error ORA-12533: TNS:illegal ADDRESS parameters ?

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

Verify that the destination can be reached using the specified protocol. Check the parameters within the ADDRESS section of TNSNAMES.ORA. Legal ADDRESS parameter formats may be found in the Oracle operating system specific documentation for your platform. Protocols that resolve names at the transport layer (such as DECnet object names) are vulnerable to this error if not properly configured or names are misspelled.