命令执行期间遇到致命错误
当我从我的c＃代码执行远程mysql上的存储过程时，我得到一般错误：“在命令执行期间遇到致命错误”总详情：
MySql.Data.MySqlClient.MySqlException: Fatal error encountered during command execution. ---> MySql.Data.MySqlClient.MySqlException: Fatal error encountered attempting to read the resultset. ---> MySql.Data.MySqlClient.MySqlException: Reading from the stream has failed. ---> System.IO.EndOfStreamException: Attempted to read past the end of the stream. at MySql.Data.MySqlClient.MySqlStream.ReadFully(Stream stream, Byte[] buffer, Int32 offset, Int32 count) at MySql.Data.MySqlClient.MySqlStream.LoadPacket() --- End of inner exception stack trace --- at MySql.Data.MySqlClient.MySqlStream.LoadPacket() at MySql.Data.MySqlClient.MySqlStream.ReadPacket() at MySql.Data.MySqlClient.NativeDriver.GetResult(Int32& affectedRow, Int32& insertedId) at MySql.Data.MySqlClient.Driver.GetResult(Int32 statementId, Int32& affectedRows, Int32& insertedId) at MySql.Data.MySqlClient.Driver.NextResult(Int32 statementId) at MySql.Data.MySqlClient.MySqlDataReader.NextResult() --- End of inner exception stack trace --- at MySql.Data.MySqlClient.MySqlDataReader.NextResult() at MySql.Data.MySqlClient.MySqlCommand.ExecuteReader(CommandBehavior behavior) --- End of inner exception stack trace --- at MySql.Data.MySqlClient.MySqlCommand.EndExecuteNonQuery(IAsyncResult asyncResult ）
我的c＃代码：
internal void InsertUpdateMySql(string connectionstring, string storedprocedure) { string sLog = "internal void InsertUpdateMySql(string connectionstring, string storedprocedure)"; MySqlConnection conn = new MySqlConnection(); int rowsAffected = 0; try { if (!string.IsNullOrEmpty(storedprocedure) && !string.IsNullOrEmpty(connectionstring)) { conn.ConnectionString = connectionstring; MySqlCommand cmd = new MySqlCommand(storedprocedure); cmd.Connection = conn; conn.Open(); IAsyncResult myResult = cmd.BeginExecuteNonQuery(null, null); SetProgressinRichText("In progress\n"); while (!myResult.IsCompleted) { SetProgressinRichText("."); } rowsAffected = cmd.EndExecuteNonQuery(myResult); } } catch (MySqlException ex) { this.service.WriteToLog(source, sLog + "\n" + ex.Message + "\n" + ex.StackTrace); } catch (Exception ex) { this.service.WriteToLog(source, sLog + "\n" + ex.Message + "\n" + ex.StackTrace); } finally { if (conn.State != System.Data.ConnectionState.Closed) conn.Close(); } }
sp就像那样：
DELIMITER $$ CREATE PROCEDURE `SPInsertUpdateCity`( in SP_CityName VARCHAR(100) charset utf8, in SP_CitySynonyms varchar(100) charset utf8, in SP_CityNumberPostOffice varchar(100)) BEGIN if(not exists(select CityID from city where CityName = SP_CityName)) then insert into city(CityName, CityNumberPostOffice) values(SP_CityName, SP_CityNumberPostOffice); insert into citysynonym (CityID, CitySynonymName) values(Last_insert_id(),SP_CitySynonyms); else if(not exists( select CitySynonymID from citysynonym where CitySynonymName = SP_CitySynonyms)) then insert into citysynonym (CityID, CitySynonymName) values((select cityid from city where CityName=SP_CityName), SP_CitySynonyms); end if; end if; END$$ DELIMITER ;
连接字符串：
Server=XXXX; Port=XXXX; Database=XXXX; Uid=XXXX;Pwd=XXXX;charset=utf8;default command timeout=7200;
但是当我在本地mysql上表示优异时，它也是成功的！ 对于远程mysql我试图发送少量数据（3条记录）并且执行成功，但对于大数据（1500条记录），执行失败
如果此处有多个操作，您的代码中可能存在线程安全问题，并且可以使用AsyncWaitHandle而不是轮询IAsyncResult的IsComplete属性。
我在执行查询时遇到的问题超过了我的MysqlCommand CommandTimeout默认值。所以我只是增加了时间，之后我没有这样的错误。
MysqlCommand cmd = new MysqlCommand(); cmd.CommandTimeout = 200;