编辑:
我正在使用 Fluent NHibernate、NHibernate 和 Oracle DB 所以我正在进行的测试如下:
[Test]
public void CanIInsertLargeVolumesOfDataToOracleInUnder5Mins()
{
var stopwatch = new Stopwatch();
stopwatch.Start();
var entities = GetEntities();
using (var session = UnitOfStatelessWork.GetUnderlyingSession())
{
using (var transaction = session.BeginTransaction(IsolationLevel.ReadCommitted))
{
foreach (var entity in entities.Select(entity => new EntityObject(entity) {SomeProperty = 19675464.25M}))
{
session.Insert(entity);
}
transaction.Commit();
}
}
stopwatch.Stop();
var time = stopwatch.Elapsed;
Assert.IsTrue(time < TimeSpan.FromMinutes(5.0));
}
我的连接字符串如下所示:
<connectionStrings>
<add connectionString="Data Source=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=myhost)(PORT=1521)))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=some.service.com)));User ID=user;Password=user" name="OracleConnection" providerName="Oracle.DataAccess.Client" />
</connectionStrings>
对于 SQL Server,我有以下流畅的配置:
var fluentConfiguration = Fluently
.Configure()
.Database(MsSqlConfiguration.MsSql2005.ConnectionString(c => c.Is(connStr)))
.Mappings(m => m.FluentMappings.AddFromAssembly(mappingAssembly));
fluentConfiguration.ExposeConfiguration(f =>
{
f.SetProperty("generate_statistics", "false");
f.SetProperty("command_timeout", "60");
f.SetListener(ListenerType.PreInsert, new AuditEventListener());
f.SetListener(ListenerType.PreUpdate, new AuditEventListener());
f.SetProperty("adonet.batch_size", "1");
f.SetProperty("hibernate.order_inserts", "true");
f.SetProperty("hibernate.order_updates", "true");
});
然后对于甲骨文:
var fluentConfiguration = Fluently
.Configure()
.Database(OracleClientConfiguration.Oracle10.AdoNetBatchSize(1000).ConnectionString(c => c.Is(connStr)))
.Mappings(m => m.FluentMappings.AddFromAssembly(mappingAssembly));
fluentConfiguration.ExposeConfiguration(f =>
{
f.SetProperty("generate_statistics", "false");
f.SetProperty("command_timeout", "60");
f.SetProperty("hibernate.connection.driver_class", "NHibernate.Driver.OracleDataClientDriver");
f.SetListener(ListenerType.PreInsert, new AuditEventListener());
f.SetListener(ListenerType.PreUpdate, new AuditEventListener());
f.SetProperty("hibernate.order_inserts", "true");
f.SetProperty("hibernate.order_updates", "true");
});
然后我对两个数据库使用无状态会话和批处理,大约可以在 SQL DB 中插入 750000 条记录。100 秒。
在 Oracle 中,相同的测试大约需要 12 分钟。
有人看到我没有看到的任何重大错误吗?