相关疑难解决方法(0)

为这个措辞奇怪的问题道歉.我不知道实际问题是什么,但希望有人可以给我一些见解.

尝试运行迁移时出现以下错误:

Timeout expired.  The timeout period elapsed prior to completion of the operation or the server is not responding. ---> System.ComponentModel.Win32Exception (0x80004005): The wait operation timed out

值得注意的是,在我的笔记本电脑上,这种情况并没有发生,但在我的虚拟机(天蓝色 - 大)上,这种情况发生率为100%.

我使用的是Ef 6.0.0 -rc1.请注意,更新EF不是一个选项.如果更新到EF 6.0.0或6.0.1,我将收到以下错误,100%失败率:

Code First添加迁移期间的错误

我也计时了错误.触发错误大约需要1.5分钟.当使用-Verboseflag 运行时,它试图创建200个带索引的表.复制sql查询并在SSMS中将其排除需要5秒.

我厌倦但没有用的一些事情:

1)ObjectContext.CommandTimeout = 36000 // 10 hours!如下所示设置:

/sf/answers/436421541/

2)在"web.config"中设置连接字符串中的超时:

connectionString="Data Source=localhost;Initial Catalog=myDB;Integrated Security=SSPI;Connection Timeout=36000"

3)设置"machine.config"事务maxTimeout:

<system.transactions> <machineSettings maxTimeout="00:00:00" /> </system.transactions>

4)在sql server上设置"远程查询超时"

USE MyDB;
GO
EXEC sp_configure 'remote query timeout', 0 ;
GO
RECONFIGURE ; …

我试图通过执行自定义Sql使用Entity Framework Migration创建FULL TEXT索引.

我的迁移类看起来像这样:

public partial class DocumentContentFullTextIndex : DbMigration
{
    public override void Up()
    {
        AlterColumn("dbo.Attachments", "ContentType", c => c.String(maxLength: 260));

        Sql("CREATE FULLTEXT CATALOG FullTextIndexes AS DEFAULT;", true);

        Sql(@"CREATE FULLTEXT INDEX ON [Attachments](
Content
    TYPE COLUMN ContentType
    Language 'ENGLISH'
)
KEY INDEX [PK_dbo.Attachments]
ON FullTextIndexes;", true);
    }

    public override void Down()
    {
        AlterColumn("dbo.Attachments", "ContentType", c => c.String(maxLength: null));

        Sql("DROP FULLTEXT INDEX ON [Attachments]");
        Sql("DROP FULLTEXT CATALOG FullTextIndexes");
    }
}

当我从MSSQL管理工作室运行它时,一切都很完美,SQL完全符合我的预期.

但是当从迁移项目运行时,第二个Sql请求会触发异常

超时已过期.操作完成之前经过的超时时间或服务器没有响应.

带-Verbose标志的完整堆栈跟踪:

Update-Database -ConnectionStringName DatabaseContext -Verbose
Using …

我在SQL Server 2008上使用Entity Framework 6.1.1,我有一个长期运行的代码第一次迁移(大约20分钟).它结束然后给出以下错误.

System.Runtime.Remoting.RemotingException: Object '/f10901d8_94fe_4db4_bb9d_51cd19292b01/bq6vk4vkuz5tkri2x8nwhsln_106.rem' has been disconnected or does not exist at the server.
   at System.Data.Entity.Migrations.Design.ToolingFacade.ToolLogger.Verbose(String sql)
   at System.Data.Entity.Migrations.Infrastructure.MigratorLoggingDecorator.ExecuteSql(DbTransaction transaction, MigrationStatement migrationStatement, DbInterceptionContext interceptionContext)
   at System.Data.Entity.Migrations.DbMigrator.ExecuteStatementsInternal(IEnumerable`1 migrationStatements, DbTransaction transaction, DbInterceptionContext interceptionContext)
   at System.Data.Entity.Migrations.DbMigrator.ExecuteStatementsInternal(IEnumerable`1 migrationStatements, DbConnection connection)
   at System.Data.Entity.Migrations.DbMigrator.<>c__DisplayClass30.<ExecuteStatements>b__2e()
   at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.<>c__DisplayClass1.<Execute>b__0()
   at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute[TResult](Func`1 operation)
   at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute(Action operation)
   at System.Data.Entity.Migrations.DbMigrator.ExecuteStatements(IEnumerable`1 migrationStatements, DbTransaction existingTransaction)
   at System.Data.Entity.Migrations.DbMigrator.ExecuteStatements(IEnumerable`1 migrationStatements)
   at System.Data.Entity.Migrations.Infrastructure.MigratorBase.ExecuteStatements(IEnumerable`1 migrationStatements)
   at System.Data.Entity.Migrations.DbMigrator.ExecuteOperations(String migrationId, XDocument targetModel, IEnumerable`1 operations, IEnumerable`1 systemOperations, Boolean downgrading, Boolean auto)
   at System.Data.Entity.Migrations.DbMigrator.ApplyMigration(DbMigration migration, DbMigration lastMigration)
   at …