间歇性的"未知数据库"

Question

我们目前正在尝试使用在RDS上运行的AWS Aurora(mysql)数据库来解决运行dotnet核心和EF核心的问题.

我们在一些选择中通过EF获得"未知数据库"错误,问题是它们相当罕见且数据库显然存在.我在下面添加了错误,遗憾的是我只能在4天前找到另一个问题(AWS Aurora服务器有时会回复"未知数据库:...")但是没有任何令人满意的回复.

我很感激任何帮助,甚至承认这不仅仅是我和另一个人.

fail: MySql.Data.EntityFrameworkCore.Query.Internal.MySQLQueryCompilationContextFactory[1]
  An exception occurred in the database while iterating the results of a query.
  MySql.Data.MySqlClient.MySqlException: Unknown database 'mydb_dev'
     at MySql.Data.MySqlClient.MySqlStream.ReadPacket()
     at MySql.Data.MySqlClient.NativeDriver.ReadOk(Boolean read)
     at MySql.Data.MySqlClient.MySqlConnection.ChangeDatabase(String databaseName)
     at MySql.Data.MySqlClient.MySqlConnection.Open()
     at Microsoft.EntityFrameworkCore.Storage.RelationalConnection.Open()
     at Microsoft.EntityFrameworkCore.Query.Internal.QueryingEnumerable.Enumerator.MoveNext()
     at Microsoft.EntityFrameworkCore.Query.QueryMethodProvider.<_ShapedQuery>d__3`1.MoveNext()
     at Microsoft.EntityFrameworkCore.Query.Internal.LinqOperatorProvider.ExceptionInterceptor`1.EnumeratorExceptionInterceptor.MoveNext()

MySql.Data.MySqlClient.MySqlException: Unknown database 'mydb_dev'
   at MySql.Data.MySqlClient.MySqlStream.ReadPacket()
   at MySql.Data.MySqlClient.NativeDriver.ReadOk(Boolean read)
   at MySql.Data.MySqlClient.MySqlConnection.ChangeDatabase(String databaseName)
   at MySql.Data.MySqlClient.MySqlConnection.Open()
   at Microsoft.EntityFrameworkCore.Storage.RelationalConnection.Open()
   at Microsoft.EntityFrameworkCore.Query.Internal.QueryingEnumerable.Enumerator.MoveNext()
   at Microsoft.EntityFrameworkCore.Query.QueryMethodProvider.<_ShapedQuery>d__3`1.MoveNext()
   at Microsoft.EntityFrameworkCore.Query.Internal.LinqOperatorProvider.ExceptionInterceptor`1.EnumeratorExceptionInterceptor.MoveNext()