How to fix the Oracle error ORA-12560: TNS:protocol adapter error?

In this post, you’ll learn more about the Oracle ErrorORA-12560: TNS:protocol adapter error with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-12560: TNS:protocol adapter error

Reason for the Error ORA-12560: TNS:protocol adapter error

A generic protocol adapter error occurred.

How to fix the Error ORA-12560: TNS:protocol adapter error ?

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

Check addresses used for proper protocol specification. Before reporting this error, look at the error stack and check for lower level transport errors. For further details, turn on tracing and reexecute the operation. Turn off tracing when the operation is complete.