Hi @Keith Steflik,
a) you have contacted the wrong database. This might be "indirectly" wrong. For example, if you are using a entry from a tnsnames.ora file then you might be pointing at the wrong file.
b) your username is wrong.
c) your password is wrong (passwords are typically case-sensitive depending on your settings).
Please also make sure that you have allowed to use the account to connect from a remote machine.
Regards,
Zoe Hui
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