How to Fix ORA-12560: TNS: Protocol Adapter Error

by | Mar 11, 2017 | Blog, Oracle

oracle-ora-12560-protocol-adapter-error

When you see this ORA-12560 error on Windows, you need to check these two things before anything else.

    1. Make sure the windows service is up and running
      ORA-12560 error
    2. Make sure your ORACLE_SID is set to the instance name you’re trying to connect to
        If either one or two are not correct you will get the error as seen below.

Oracle Error fix

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