问:
当我使用这些交易时,我会在每100条记录中约有1条出现以下错误。
此IfxTransaction已完成;它 已不再可用
我不能指望错误何时发生或错误的原因是什么。
我尝试在同一个交易中插入约607
条记录。
我的代码:
public static int InsertGroups(List<Group> groups)
{
DBConnectionForInformix con = new DBConnectionForInformix("");
con.Open_Connection();
con.Begin_Transaction();
int affectedRow = -1;
Dictionary<string, string> groupsParameter = new Dictionary<string, string>();
try
{
foreach (Group a in groups)
{
groupsParameter.Add("id", a.GroupId.ToString());
groupsParameter.Add("name", a.Name);
groupsParameter.Add("studentcount", a.StudentCount.ToString());
groupsParameter.Add("divisiontag", a.DivisionTag.ToString());
groupsParameter.Add("entireclass", a.EntireClass.ToString());
groupsParameter.Add("classid", a.ClassId.ToString());
groupsParameter.Add("depcode", a.DepCode.ToString());
groupsParameter.Add("studycode", a.StudyCode.ToString());
groupsParameter.Add("batchnum", a.BatchNum.ToString());
affectedRow = DBUtilities.InsertEntityWithTrans("groups", groupsParameter, con);
groupsParameter.Clear();
if (affectedRow < 0)
{
break;
}
}
if (affectedRow > 0)
{
con.current_trans.Commit();
}
}
catch (Exception ee)
{
string message = ee.Message;
}
con.Close_Connection();
return affectedRow;
}
public void Begin_Transaction()
{
if (this.connection.State == ConnectionState.Open)
{
this.current_trans = this.connection.BeginTransaction(IsolationLevel.Serializable);
}
}
public static int InsertEntityWithTrans(string tblName, Dictionary<string, string> dtParams, DBConnectionForInformix current_conn)
{
int Result = -1;
string[] field_names = new string[dtParams.Count];
dtParams.Keys.CopyTo(field_names, 0);
string[] field_values = new string[dtParams.Count];
string[] field_valuesParam = new string[dtParams.Count];
dtParams.Values.CopyTo(field_values, 0);
for (int i = 0; i < field_names.Length; i++)
{
field_valuesParam[i] = "?";
}
//----------------------------------------------------------------------------------------------------------------------------------------------
string insertCmd = @"INSERT INTO " + tblName + " (" + string.Join(",", field_names) + ") values (" + string.Join(",", field_valuesParam) + ")";
//----------------------------------------------------------------------------------------------------------------------------------------------
IfxCommand com = new IfxCommand(insertCmd);
for (int j = 0; j < field_names.Length; j++)
{
com.Parameters.Add("?", field_values[j]);
}
try
{
Result = current_conn.Execute_NonQueryWithTransaction(com);
if (current_conn.connectionState == ConnectionState.Open && Result > 0)//OK: logging
{
# region // Log Area
#endregion
}
}
catch (Exception ex)
{
throw;
}
return Result;
}
public int Execute_NonQueryWithTransaction(IfxCommand com)
{
string return_msg = "";
int return_val = -1;
Open_Connection();
com.Connection = this.connection;
com.Transaction = current_trans;
try
{
return_val = com.ExecuteNonQuery();
}
catch (IfxException ifxEx)// Handle IBM.data.informix : mostly catched
{
return_val = ifxEx.Errors[0].NativeError;
return_msg = return_val.ToString();
}
catch (Exception ex)// Handle all other exceptions.
{
return_msg = ex.Message;
}
finally
{
if (!string.IsNullOrEmpty(return_msg))//catch error
{
//rollback
current_trans.Rollback();
Close_Connection();
connectionstate = ConnectionState.Closed;
}
}
return return_val;
}
答案 0 :(得分:3)
您好像在两个地方处理错误并回滚交易(Execute_NonQueryWithTransaction
和InsertGroups
。
来自Execute_NonQueryWithTransaction
的返回用于返回错误代码和返回受影响的行。但是在InsertGroups
中,它被纯粹视为受影响的行。
您是否可以在Execute_NonQueryWithTransaction
中将InsertGroups
的错误代码(因此事务回滚)视为成功(插入行),然后提交失败?
整体而言,代码需要进行大量清理: