Some TikTok users in the U.S. are having trouble using the app, which the company attributes to an issue with an Oracle data center.

“Creators may temporarily experience lags in posting content while Oracle works to resolve the issue,” TikTok said on X.

According to user-generated reports on Downdetector, the issue has been ongoing since before 9 a.m. ET. Oracle’s own post on X indicates the outage started around then as well.

Oracle is part of an investor group that owns 80% of the TikTok USDS Joint Venture, which was created to comply with a national security law that required the Chinese company ByteDance to divest its American TikTok business or be banned in the United States.

Oracle has been providing cloud services and managing user data for TikTok since before the creation of the TikTok USDS Joint Venture. Since the sale, Oracle issues have now contributed to two major TikTok outages.

Just days after the sale was finalized in January, TikTok experienced a similar outage, which it attributed to a winter storm that impacted a major Oracle data center.

Oracle has not yet identified the cause of Tuesday’s outage.