Please note that PowerCenter 10.0 has reached End of Support on 30th November 2019 & reached end of Extended Support on 30th November 2020. Also, as per PAM at the url below; only Oracle Enterprise Edition: 12c; 11gR2; 11gR1 are supported. https://network.informatica.com/community/informatica-network/product-availability-matrices
Sorry for being pernickety, but the question was not about Oracle 10g but about PowerCenter 10.
And yes, the Product Availability Matrix (PAM) is always the right source for statements about supported Oracle versions. Just be advised that quite often PAMs get updated with later versions of supported DBMS, and sometimes older DBMS versions are removed from a newer PAM as well (because that particular DBMS version is no longer supported by the vendor).