Has this datasource ever worked against this array, on any version of OCI?
Is so, was anything changed?
There is a field that controls whether OCI is speaking http or https against the device - i,e, speaking TLS/SSL or not.
If you have set the datasource to use port 443, you need to ensure that field is set to HTTPS
If the datasource is set to 80, HTTP.
Otherwise, you are trying to speak TLS/SSL to a port that doesn't support it (80), or NOT trying to speak TLS/SSL to a port the require it (443)