**Laurel Jay Fadul** created an [issue](https://nhibernate.jira.com/browse/NH-3867) — <time datetime="2016-04-28T03:47:15.639Z" title="2016-04-28T03:47:15.639Z">28th April 2016, 3:47:15</time>: > SchemaUpdate is creating sequences even if already exists in Oracle causing an exception. >