Transaction Log Filling

Nov 2, 1999

We are having continual problems with our transaction log filling up on one of our major applications.
Does anyone know of a way or tool to read the transaction log? We want to determine what is causing this problem.

Thanks

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Tempdb Transaction Log Filling Up

Aug 2, 2001

We have a stored procedure that uses temp tables and must gather a lot of data. When we stress test this stored procedure, the tempdb transaction log fills up.

We tried using "Select Into" for our tables. That caused us not to write to the transaction log but it caused problems because it locked up sysobjects.

Is there some other way not to write to the transaction log?

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Sep 4, 2007

I am having an issue with the transaction growing uncontrolled and filling up the disk. I suspect that transactions are structured incorrectly between the web application that is monitoring a queue and the SQL that is executing the WAITFOR RECEIVE. This method is receiving large binary objects, so thats the reason for the arguments to the reader. Also, even though its not the suggested way, we commit everytime through to prevent the queue from disabling (which it was doing when we would ROLLBACK - we don't really care if the message is bad, we just want to log it and wait for the next one).

The basic structure is this, which is executed on a separate thread. Am I missing something that could be causing transactions to get into a state where the log grows uncontrollably? Is there a problem with the loop? Should I be doing a ROLLBACK when there is nothing to receive (this is a low volume queue, so it may not receive a message for a few minutes or more)? If so, where should I be doing this?


private void MonitorUpdateQueue()

{

const string _sqlEndDialog = @"END CONVERSATION @conversationHandle";

const string _errorMessageType = @"http://schemas.microsoft.com/SQL/ServiceBroker/Error";

const string _endDialogMessageType = @"http://schemas.microsoft.com/SQL/ServiceBroker/EndDialog";

using (_ssbConnection)

{

if (_ssbConnection == null) _ssbConnection = new SqlConnection();

using (_monitorQueueCommand =

new SqlCommand("asp_ProcessMessage", _ssbConnection))

{

_monitorQueueCommand.CommandType = CommandType.StoredProcedure;

_monitorQueueCommand.CommandTimeout = 0;

while (true)

{

SqlDataReader reader = null;

Guid conversationHandle = Guid.Empty;

Byte[] payloadBytes = { 0 };

try

{

if (_ssbConnection.State == ConnectionState.Closed)

{

_ssbConnection.ConnectionString = _ssbConnectionString;

_ssbConnection.Open();

}

Byte[] latestFullUpdate = null;

_monitorQueueCommand.Transaction = _ssbConnection.BeginTransaction(IsolationLevel.Serializable);

if (_monitorQueueCommand.Transaction != null)

{

reader = _monitorQueueCommand.ExecuteReader(CommandBehavior.SequentialAccess);

if (reader != null)

{

XmlDocument updateMessage = new XmlDocument();

while (reader.Read())

{

conversationHandle = reader.GetGuid(0);

string messageType = reader.GetString(1);

payloadBytes = reader.GetSqlBytes(2).Value;

if (messageType == _endDialogMessageType || messageType == _errorMessageType)

{

SqlCommand cmdEndDialog = new SqlCommand(_sqlEndDialog, _ssbConnection, _monitorQueueCommand.Transaction);

cmdEndDialog.Parameters.AddWithValue("@conversationHandle",

conversationHandle);

cmdEndDialog.ExecuteNonQuery();

}

else

{

if (payloadBytes.Length > 0)

{

ProcessUpdateQueue(updateMessage);

}

}

}

reader.Close();

}

_monitorQueueCommand.Transaction.Commit();

}

}

catch (Exception ex)

{

if (_monitorQueueCommand.Transaction != null && _monitorQueueCommand.Transaction.Connection != null)

{

// Dequeue the bad message and ends the conversation

SqlCommand cmdQuarantineMessage = new SqlCommand("usp_FailMessage", _ssbConnection, _monitorQueueCommand.Transaction);

cmdQuarantineMessage.CommandType = CommandType.StoredProcedure;

cmdQuarantineMessage.ExecuteNonQuery();

if (reader != null && !reader.IsClosed) reader.Close();

if (_monitorQueueCommand.Transaction != null) _monitorQueueCommand.Transaction.Commit();

}



log.Error("Error monitoring queue.", ex);

}

finally

{

if (reader != null && !reader.IsClosed) reader.Close();

if (_monitorQueueCommand.Transaction != null)

{

_monitorQueueCommand.Transaction = null;

}

}

}

}

}

}


The stored procedure that is monitoring looks like this:


CREATE PROCEDURE [dbo].[asp_ProcessMessage]

AS

BEGIN

WAITFOR ( RECEIVE TOP ( 1 ) conversation_handle, message_type_name, message_body

FROM [MyQueue] ) ;

END

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Jul 18, 2015

I have a database that is part of AlwaysOn that is filling up the transaction log drive even though I have a daily full backup and transaction logs set for every 2 hours. The backups are going from both the primary and secondary replica backuping up to the shared disk and I have the backup preferences set to the primary.

When I try to shrink the log I get 'The transaction log for database 'DB' is full due to 'LOG_BACKUP''. I have to manually backup the trans log and then shrink, why the maintenance plan backups aren't doing this even though they are "working".

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Mar 21, 2008

I have a ton of data to load into a SQL 2005 database.
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Here is the bcp command that failed:

"C:Program FilesMicrosoft SQL Server80ToolsBinncp" billing_data_repository..mtr_rdng_hrly_arc_t in mtr_rdng_hrly_arc_t.dat -c
-b10000 -Sxxxx -T

Here is the last part of the output from the bcp command:

...
10000 rows sent to SQL Server. Total sent: 970000
10000 rows sent to SQL Server. Total sent: 980000
10000 rows sent to SQL Server. Total sent: 990000
SQLState = 37000, NativeError = 9002
Error = [Microsoft][ODBC SQL Server Driver][SQL Server]The transaction log for database 'billing_data_repository' is full. To find out why space in the log cannot be reused, see the log_reuse_wait_desc column in sys.databases

BCP copy in failed

I thought that a commit was issued after every 10000 rows and that this would keep the log from filling up.

The log_reuse_wait_desc column in sys.databases is set to 'LOG_BACKUP' for the database being used.

Does a checkpoint need to be done more often?

Besides breaking up the 12 million row data file into something more manageable, does anyone have a solution?

How can I continue to use my same loading script, and keep the log from filling up?

Thank you.

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Error 8525: Distributed Transaction Completed. Either Enlist This Session In A New Transaction Or The NULL Transaction.

May 31, 2008

Hi All

I'm getting this when executing the code below. Going from W2K/SQL2k SP4 to XP/SQL2k SP4 over a dial-up link.

If I take away the begin tran and commit it works, but of course, if one statement fails I want a rollback. I'm executing this from a Delphi app, but I get the same from Qry Analyser.

I've tried both with and without the Set XACT . . ., and also tried with Set Implicit_Transactions off.

set XACT_ABORT ON
Begin distributed Tran
update OPENDATASOURCE('SQLOLEDB','Data Source=10.10.10.171;User ID=*****;Password=****').TRANSFERSTN.TSADMIN.TRANSACTIONMAIN
set REPFLAG = 0 where REPFLAG = 1
update TSADMIN.TRANSACTIONMAIN
set REPFLAG = 0 where REPFLAG = 1 and DONE = 1
update OPENDATASOURCE('SQLOLEDB','Data Source=10.10.10.171;User ID=*****;Password=****').TRANSFERSTN.TSADMIN.WBENTRY
set REPFLAG = 0 where REPFLAG = 1
update TSADMIN.WBENTRY
set REPFLAG = 0 where REPFLAG = 1
update OPENDATASOURCE('SQLOLEDB','Data Source=10.10.10.171;User ID=*****;Password=****').TRANSFERSTN.TSADMIN.FIXED
set REPFLAG = 0 where REPFLAG = 1
update TSADMIN.FIXED
set REPFLAG = 0 where REPFLAG = 1
update OPENDATASOURCE('SQLOLEDB','Data Source=10.10.10.171;User ID=*****;Password=****').TRANSFERSTN.TSADMIN.ALTCHARGE
set REPFLAG = 0 where REPFLAG = 1
update TSADMIN.ALTCHARGE
set REPFLAG = 0 where REPFLAG = 1
update OPENDATASOURCE('SQLOLEDB','Data Source=10.10.10.171;User ID=*****;Password=****').TRANSFERSTN.TSADMIN.TSAUDIT
set REPFLAG = 0 where REPFLAG = 1
update TSADMIN.TSAUDIT
set REPFLAG = 0 where REPFLAG = 1
COMMIT TRAN


It's got me stumped, so any ideas gratefully received.Thx

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Feb 27, 2007

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publicSqlDataReader GetOrgID()
{
 Singleton s1 = Singleton.Instance();
 Guid uuid;
uuid = new Guid(s1.User_id);
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cmd.Parameters.Add("@UserID", SqlDbType.UniqueIdentifier, 16).Value = uuid;
 
con.Open();
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 return dtr;
 
This is the code trying to accomplish the same thing with a Dataset instead.
 
 public DataSet organID(DataSet dataset)
{
 Singleton s1 = Singleton.Instance();
 Guid uuid;
uuid = new Guid(s1.User_id);
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adapter.SelectCommand = cmd;
 
adapter.Fill(dataset);
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}
 
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So assume that the Guid is a valid entry..I should return a valid dataset but its null.
 Additionally if I change the sql query to just be Select * From aspnet_OrgNames I still get a null value...I am assuming I am doing something wrong trying to fill the dataset.
 
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I have recently been having a problem with the TempDb database
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My last check of the activity on the server during an event
such as this produced the following information.

- Approx. 300 connections to primarily 2 databases.

- 4 active connections:

Connection 1 -SELECT on database 1 with 13,000 records
and a record size of approx. 300 bytes.

Connection 2 -SELECT on database 1 with 13,000 records
and a record size of approx. 300 bytes.

Connection 3 -SELECT on database 2 with 550 records
and a record size of approx. 100 bytes.

Connection 4 -Replication subscriber set at 100 transactions.

My questions are:

1. What processes may cause the TempDb database to fill up?

2. What processes prevent the database from purging?

Any information would be greatly appreciated.

Jim Story

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Question:
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and

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Hello,

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hi all!



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Hi,

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Stéphane

Here is the detailed error log I got:

System.Data.ConstraintException: Impossible d'activer les contraintes. Une ou plusieurs lignes contiennent des valeurs qui violent les contraintes de type non null, unique ou de clé externe.
   Ã System.Data.DataSet.FailedEnableConstraints()
   Ã System.Data.DataSet.EnableConstraints()
   Ã System.Data.DataSet.set_EnforceConstraints(Boolean value)
   Ã System.Data.Common.DataAdapter.Fill(DataTable[] dataTables, IDataReader dataReader, Int32 startRecord, Int32 maxRecords)
   Ã System.Data.Common.DbDataAdapter.FillInternal(DataSet dataset, DataTable[] datatables, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior)
   Ã System.Data.Common.DbDataAdapter.Fill(DataTable[] dataTables, Int32 startRecord, Int32 maxRecords, IDbCommand command, CommandBehavior behavior)
   Ã System.Data.Common.DbDataAdapter.Fill(DataTable dataTable)
   Ã Test_ADO.DS_TauxTaxeTableAdapters.TA_TauxTaxe.FillByPays(TauxTaxeDataTable dataTable, String Pays) dans d:projetvisual c++ 2005projets c++cli est_adods_tauxtaxe.h:ligne 1247
   Ã Test_ADO.Form1.Sel_Pays_NewSel(Object sender, EventArgs e) dans d:projetvisual c++ 2005projets c++cli est_adoform1.h:ligne 1887
   Ã System.Windows.Forms.RadioButton.OnCheckedChanged(EventArgs e)
   Ã System.Windows.Forms.RadioButton.set_Checked(Boolean value)
   Ã Test_ADO.Form1.Init_Form1() dans d:projetvisual c++ 2005projets c++cli est_adoform1.h:ligne 1480
   Ã Test_ADO.Form1.Form1_Load(Object sender, EventArgs e) dans d:projetvisual c++ 2005projets c++cli est_adoform1.h:ligne 1446
   Ã System.Windows.Forms.Form.OnLoad(EventArgs e)
   Ã System.Windows.Forms.Form.OnCreateControl()
   Ã System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)
   Ã System.Windows.Forms.Control.CreateControl()
   Ã System.Windows.Forms.Control.WmShowWindow(Message& m)
   Ã System.Windows.Forms.Control.WndProc(Message& m)
   Ã System.Windows.Forms.ScrollableControl.WndProc(Message& m)
   Ã System.Windows.Forms.ContainerControl.WndProc(Message& m)
   Ã System.Windows.Forms.Form.WmShowWindow(Message& m)
   Ã System.Windows.Forms.Form.WndProc(Message& m)
   Ã System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   Ã System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   Ã System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

Finally, SQL Statement for "TA_TauxTaxe::FillByPays" is the following:

SELECT        Pays, Province_Etat, Taxe1_Appl, Taxe1_Dsc, Taxe1_Taux, Taxe2_Appl, Taxe2_Dsc, Taxe2_Taux
FROM            TauxTaxe
WHERE        (Pays = @Pays)

In debug mode, I double-checked and could verify that @Pays didn't have any null value but a valid string value at time "Fill" routine was invoked.  Any clue?

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Filling Up Missing Columns Data

Oct 31, 2007



Hi,

I have the following table :




Code Block
Create table #Customers (custid int,name nvarchar(20),age int, st_code int,
citycode int, internalid int,type int,oldcustid int)

Insert into #Customers values(101,'Aron',23,1,1,12,1,0);
Insert into #Customers values(102,'Cathy',28,1,1,13,1,0);
Insert into #Customers values(103,'Zarog',33,1,1,14,1,0);
Insert into #Customers values(104,'Michale',25,1,2,12,1,0);
Insert into #Customers values(105,'Linda',43,1,2,13,1,0);





Insert into #Customers values(106,'Burt',53,1,2,14,1,0);


If you observe, the rows are unique based on the internalid per st_code,per city_code

Problem :
Now the user inserts another row but this time he passes only the following :

Insert into #Customer values(120,'AronNew',null,1,1,12,null,null) -
Note he doesnt pass the age or the type

I want that when he passes this row, i match up this row with the existing row based on st_code,citycode and internalid and then update the new row with the missing values(only columns with null) that were there in the existing row

OUTPUT

120,'AronNew',23,1,1,12,1,0

How could I write the query for this?

thanks.

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Error In Filling A Table With A Stored Procedure

Jan 4, 2007

When I run the code below, I get
a table with "In order to evaluate an indexed property, the property
must be qualified and the arguments must be explicitly supplied by the
user." as the contents... 
Public Function ReturnTable(ByVal strName As String, ByVal alParameters As ArrayList, ByVal strTable As String) As DataSet
        Dim sqlSP As New SqlCommand
        sqlSP.CommandTimeout = 120
        sqlSP.Connection = sqlConn
        sqlSP.CommandType = CommandType.StoredProcedure
        sqlSP.CommandText = strName

        AddParameters(sqlSP.Parameters, alParameters)

        Dim dsDataSet As New DataSet()

        sqlConn.Open()

        Dim sqlDataAdapter As New SqlDataAdapter(sqlSP)
        sqlDataAdapter.Fill(dsDataSet, strTable)
        sqlConn.Close()

        Return dsDataSet

    End Function

 AddParameters is a function which adds each of the parameters in the
array list to the sqlSP parameter collection... In SQL Profiler, the sp
is called and runs and returns results... But a dataset with one table
and the above msg is returned... 

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