Oracle is carrying out an investigation to determine what caused the outage, the VA said. Oracle did not immediately respond to CNBC's request for comment.
The outage marks Oracle's latest stumble in a thorny, yearslong EHR rollout with the VA, which has been marred by patient safety concerns. The agency launched a strategic review of Cerner in 2021, before Oracle's acquisition, and it temporarily paused deployment of the software in 2023.
Four VA facilities in Michigan are slated to deploy Oracle's federal EHR in 2026.