复制数据库脱机模式

Question

我一直在使用SMO来传输数据库.使用TransferDatabase任务很容易从c#处理.

对于我目前的项目,这会变慢.我必须切换到脱机模式,数据库是分离和分离的.

从c#开始这样一个过程最麻烦的方法是什么？我知道有SSIS,但如果可能,我不想使用它.在我的机器上安装SSIS有点痛苦.

Answer 1

只需从c#发出SQL Server Detach and Attach命令

像这样......

var sourceConnectionString = "Data Source=sourceServer;Initial Catalog=MyDB;Integrated Security=True;";
var destinationConnectionString = "Data Source=destinationServer;Initial Catalog=MyDB;Integrated Security=True;";

var sourceLocalPath = @"C:\MSSQL\DATA\MyDB.mdf";
var destinationLocalPath = @"C:\MSSQL\DATA\MyDB.mdf";

var sourceRemotePath = @"\\ServerNameA\ShareName\MyDB.mdf";
var destinationRemotePath = @"\\ServerNameB\ShareName\MyDB.mdf";

// Make connections
var sourceConnection = new SqlConnection(sourceConnectionString);
sourceConnection.Open();
var destinationConnection = new SqlConnection(destinationConnectionString);
destinationConnection.Open();

// Detach source database
var sourceCommand = new SqlCommand("sp_detach_db MyDB", sourceConnection);
sourceCommand.ExecuteNonQuery();

// Detach destination database
var destinationCommand = new SqlCommand("sp_detach_db MyDB", destinationConnection);
destinationCommand.ExecuteNonQuery();

// Copy database file
File.Copy(sourceRemotePath, destinationRemotePath);

// Re-attach source database
sourceCommand = new SqlCommand("CREATE DATABASE MyDbName ON (FILENAME = '" + sourceLocalPath + "') FOR ATTACH", sourceConnection);
sourceCommand.ExecuteNonQuery();

// Re-attach destination database
destinationCommand = new SqlCommand("CREATE DATABASE MyDbName ON (FILENAME = '" + destinationLocalPath + "') FOR ATTACH", destinationConnection);
destinationCommand.ExecuteNonQuery();