业务高峰时段数据库操作报异常System.AggregateException: One or more errors occurred. (Name or service not known)

[renxuefeng]

问题描述：

UseAdoConnectionPool(false)时报

UseAdoConnectionPool(true)时报

看着像是获取不到数据库连接了，但查询阿里云SQL server时连接数并不高，100左右
连接字符串里尝试配置了

无效果问题依然存在，异常基本都出现在业务高峰时段

数据库版本

阿里云RDS SQL Server 2016 标准版

安装的Nuget包

3.2.815

.net framework/. net core？ 及具体版本

.netcore 6.0

[2881099]

你现在已经把问题矛头，放在FreeSql上面了。

提示已经很明显了，检查网络情况。特别是在报错的时候，你应该在程序中启动一份代码，用原生ado.net访问数据库测试的代码。

[renxuefeng]

@2881099 你好，都是在获取池子里连接的时候报异常
System.OperationCanceledException: The operation was canceled. at Microsoft.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, UInt32 waitForMultipleObjectsTimeout, Boolean allowCreate, Boolean onlyOneCheckConnection, DbConnectionOptions userOptions, DbConnectionInternal& connection) at Microsoft.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, TaskCompletionSource1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection)
at Microsoft.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection) at Microsoft.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource1 retry, DbConnectionOptions userOptions)
at Microsoft.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource1 retry, SqlConnectionOverrides overrides) at Microsoft.Data.SqlClient.SqlConnection.InternalOpenAsync(CancellationToken cancellationToken) --- End of stack trace from previous location --- at FreeSql.Internal.CommonProvider.DbConnectionStringPool.GetAsync() at FreeSql.Internal.CommonProvider.AdoProvider.ExecuteReaderMultipleAsync(Int32 multipleResult, DbConnection connection, DbTransaction transaction, Func3 fetchHandler, Action2 schemaHandler, CommandType cmdType, String cmdText, Int32 cmdTimeout, DbParameter[] cmdParms, CancellationToken cancellationToken)

业务请求量大的时候会出现，请问要加测试代码加在哪里？

[2881099]

提示操作被取消了，检查程序逻辑执行顺序。