Обсуждение: The connection is dead
Hi, I'm running PostgreSQL 8.1.1 on the WindowsXP box with following information: 1. Programming Language C# MS .NET Framework 2. ADO NET connection through PostgresODBC 3. Using "Connection.BeginTransaction(IsolationLevel.ReadCommitted) and Transaction.Commit to update database. 4. Update record by record. 5. There is no problem if the records is less than 1000 records. 6. If records is over 1000 records, I got the error message "The connection is dead". How can I configure the PostgreSQL 8.1.1 to handle it. Thank you for any suggestion. Pairat
What does your code look like? And have you tried using Npgsql instead of
the ODBC driver?
-----Original Message-----
From: pgsql-general-owner@postgresql.org
[mailto:pgsql-general-owner@postgresql.org] On Behalf Of pairat@rachada.com
Sent: Saturday, January 07, 2006 4:39 AM
To: pgsql-general@postgresql.org
Subject: [GENERAL] The connection is dead
Hi,
I'm running PostgreSQL 8.1.1 on the WindowsXP box with following
information:
1. Programming Language C# MS .NET Framework 2. ADO NET connection through
PostgresODBC 3. Using
"Connection.BeginTransaction(IsolationLevel.ReadCommitted) and
Transaction.Commit to update database.
4. Update record by record.
5. There is no problem if the records is less than 1000 records.
6. If records is over 1000 records, I got the error message "The connection
is dead".
How can I configure the PostgreSQL 8.1.1 to handle it.
Thank you for any suggestion.
Pairat
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I use ODBC instead of Npgsql because the ODBC can use with MS Access,
MS SQL and PostgreSQL database.
Here is the code.
System.DateTime dateTimeNow = System.DateTime.Now;
int i=0;
dataView1.RowFilter = "Posted = true";
dataView1.Sort = "GLTran, ID"; //GLTran Table
int n = this.BindingContext[dataView1].Count - 1;
string _Journal;
DataRowView DataRowView1;
this.cmdInsert.Transaction = _Transaction;
this.cmdDelete.Transaction = _Transaction;
this.cmdDelete1.Transaction = _Transaction;
this.cmdUpdate1.Transaction = _Transaction;
this.cmdUpdate2.Transaction = _Transaction;
for(i=0; i<=n; i++)
{
this.BindingContext[dataView1].Position = i;
DataRowView1 = (DataRowView) this.BindingContext[dataView1].Current;
this.cmdInsert.Parameters["Employee_id"].Value =
DataRowView1["Employee_id"];
this.cmdInsert.Parameters["GJournal"].Value =
DataRowView1["GJournal"];
this.cmdInsert.Parameters["GJournalDT"].Value =
DataRowView1["GJournalDT"];
this.cmdInsert.Parameters["GLAccount"].Value =
DataRowView1["GLAccount"];
this.cmdInsert.Parameters["GLDescription"].Value =
DataRowView1["GLDescription"];
this.cmdInsert.Parameters["GLCredit"].Value =
DataRowView1["GLCredit"];
this.cmdInsert.Parameters["GLDebit"].Value = DataRowView1["GLDebit"];
this.cmdInsert.Parameters["GLTran"].Value = DataRowView1["GLTran"];
this.cmdInsert.Parameters["TransactionDate"].Value = dateTimeNow;
this.cmdDelete.Parameters["ID"].Value = DataRowView1["ID"];
try
{
this.cmdInsert.ExecuteNonQuery();
}
catch (System.Exception ex)
{
this.RollBack(ex.Message);
}
try
{
this.cmdDelete.ExecuteNonQuery();
}
catch (System.Exception ex)
{
this.RollBack(ex.Message);
}
_Journal = DataRowView1["GJournal"].ToString().Trim();
if (_Journal == "JP" | _Journal == "JR" )
{
this.cmdDelete1.Parameters["GLTran"].Value = DataRowView1["GLTran"];
try
{
this.cmdDelete1.ExecuteNonQuery();
}
catch (System.Exception ex)
{
this.RollBack(ex.Message);
}
this.cmdUpdate1.Parameters["Posted"].Value = true;
this.cmdUpdate1.Parameters["GLTran"].Value = DataRowView1["GLTran"];
try
{
this.cmdUpdate1.ExecuteNonQuery();
}
catch (System.Exception ex)
{
this.RollBack(ex.Message);
}
}
if (_Journal == "JP" | _Journal == "JR )
{
this.cmdUpdate2.Parameters["Posted"].Value = true;
this.cmdUpdate2.Parameters["GLTran"].Value = ataRowView1["GLTran"];
try
{
this.cmdUpdate2.ExecuteNonQuery();
}
catch (System.Exception ex)
{
this.RollBack(ex.Message);
}
}
}
Thank you for your comment.
Pairat
Hi Jonel
Thank you for your response. I use ODBC instead of Npgsql because the
program can use with MS Access, MS SQL and PostgreSQL.
Here is the code.
int n = this.BindingContext[dataView1].Count - 1;
string _Journal;
DataRowView DataRowView1;
this.cmdInsert.Transaction = _Transaction;
this.cmdDelete.Transaction = _Transaction;
this.cmdDelete1.Transaction = _Transaction;
this.cmdUpdate1.Transaction = _Transaction;
this.cmdUpdate2.Transaction = _Transaction;
for(i=0; i<=n; i++)
{
this.BindingContext[dataView1].Position = i;
DataRowView1 = (DataRowView) this.BindingContext[dataView1].Current;
this.cmdInsert.Parameters["CustomerID"].Value = string.Empty;
this.cmdInsert.Parameters["Employee_id"].Value =
DataRowView1["Employee_id"];
this.cmdInsert.Parameters["GJournal"].Value =
DataRowView1["GJournal"];
this.cmdInsert.Parameters["GJournalDT"].Value =
DataRowView1["GJournalDT"];
this.cmdInsert.Parameters["TransactionDate"].Value =
dateTimeNow;
this.cmdDelete.Parameters["ID"].Value =
DataRowView1["ID"];
try
{
this.cmdInsert.ExecuteNonQuery();
}
catch (System.Exception ex)
{
this.RollBack(ex.Message);
}
try
{
this.cmdDelete.ExecuteNonQuery();
}
catch (System.Exception ex)
{
this.RollBack(ex.Message);
}
_Journal = DataRowView1["GJournal"].ToString().Trim();
if (_Journal == "JP" | _Journal == "JR" )
{
this.cmdDelete1.Parameters["GLTran"].Value =
DataRowView1["GLTran"];
try
{
this.cmdDelete1.ExecuteNonQuery();
}
catch (System.Exception ex)
{
this.RollBack(ex.Message);
}
this.cmdUpdate1.Parameters["Posted"].Value = true;
this.cmdUpdate1.Parameters["GLTran"].Value = DataRowView1["GLTran"];
try
{
this.cmdUpdate1.ExecuteNonQuery();
}
catch (System.Exception ex)
{
this.RollBack(ex.Message);
}
}
Thank you for your response. I use ODBC instead of Npgsql because I can
use ODBC with other database such as MS Access, and MS SQL.
Here is the code.
System.DateTime dateTimeNow = System.DateTime.Now;
int i=0;
dataView1.RowFilter = "Posted = true";
dataView1.Sort = "GLTran, ID"; //GLTran Table
int n = this.BindingContext[dataView1].Count - 1;
string _Journal;
DataRowView DataRowView1;
this.cmdInsert.Transaction = _Transaction;
this.cmdDelete.Transaction = _Transaction;
this.cmdDelete1.Transaction = _Transaction;
this.cmdUpdate1.Transaction = _Transaction;
this.cmdUpdate2.Transaction = _Transaction;
for(i=0; i<=n; i++)
{
this.BindingContext[dataView1].Position = i;
DataRowView1 = (DataRowView) this.BindingContext[dataView1].Current;
this.cmdInsert.Parameters["Employee_id"].Value =
DataRowView1["Employee_id"];
this.cmdInsert.Parameters["GJournal"].Value =
DataRowView1["GJournal"];
this.cmdInsert.Parameters["GJournalDT"].Value =
DataRowView1["GJournalDT"];
this.cmdInsert.Parameters["GLAccount"].Value =
DataRowView1["GLAccount"];
this.cmdInsert.Parameters["GLDescription"].Value =
DataRowView1["GLDescription"];
this.cmdInsert.Parameters["GLCredit"].Value =
DataRowView1["GLCredit"];
this.cmdInsert.Parameters["GLDebit"].Value = DataRowView1["GLDebit"];
this.cmdInsert.Parameters["GLTran"].Value = DataRowView1["GLTran"];
this.cmdInsert.Parameters["TransactionDate"].Value = dateTimeNow;
this.cmdDelete.Parameters["ID"].Value = DataRowView1["ID"];
try
{
this.cmdInsert.ExecuteNonQuery();
}
catch (System.Exception ex)
{
this.RollBack(ex.Message);
}
try
{
this.cmdDelete.ExecuteNonQuery();
}
catch (System.Exception ex)
{
this.RollBack(ex.Message);
}
_Journal = DataRowView1["GJournal"].ToString().Trim();
if (_Journal == "JP" | _Journal == "JR" )
{
this.cmdDelete1.Parameters["GLTran"].Value = DataRowView1["GLTran"];
try
{
this.cmdDelete1.ExecuteNonQuery();
}
catch (System.Exception ex)
{
this.RollBack(ex.Message);
}
this.cmdUpdate1.Parameters["Posted"].Value = true;
this.cmdUpdate1.Parameters["GLTran"].Value = DataRowView1["GLTran"];
try
{
this.cmdUpdate1.ExecuteNonQuery();
}
catch (System.Exception ex)
{
this.RollBack(ex.Message);
}
}
if (_Journal == "JP" | _Journal == "JR )
{
this.cmdUpdate2.Parameters["Posted"].Value = true;
this.cmdUpdate2.Parameters["GLTran"].Value = ataRowView1["GLTran"];
try
{
this.cmdUpdate2.ExecuteNonQuery();
}
catch (System.Exception ex)
{
this.RollBack(ex.Message);
}
}
}