Oracle has developed patches in response to the Spectre and Meltdown vulnerabilities (CVE-2017-5753, CVE-2017-5754, and CVE-2017-5715).
Customers should refer to Addendum to the January 2018 CPU Advisory for Spectre and Meltdown (Doc Id: 2347948.1) for details of the patches available to address this issue and the state of patches for other products.