Hi
All,
I would like to know write all transcations in the log file to the
database with out doing full backup of the database..
Please let me know is there any dbcc statement or some other method to do this..
Thanks A lot,
VJ
Hi there,
I have decided to move all my transaction handling from asp.net to stored procedures in a SQL Server 2000 database. I know the database is capable of rolling back the transactions just like myTransaction.Rollback() in asp.net. But what about exceptions? In asp.net, I am used to doing the following:
<code>Try 'execute commands myTransaction.Commit()Catch ex As Exception Response.Write(ex.Message) myTransaction.Rollback()End Try</code>Will the database inform me of any exceptions (and their messages)? Do I need to put anything explicit in my stored procedure other than rollback transaction?
Any help is greatly appreciated
I would like to have a log where I can see who all updated a particular database table and when.
Is there any such logging facility provided by MS SQL Server?
Thanks,
Mohan.
I have SQL Server 2005 Standard Edition.
How to calculate database transactions per second?
Thank you,
Gish
This should be a fairly simple question. It's based on this error message:"Transaction count after EXECUTE
indicates that a COMMIT or ROLLBACK TRANSACTION statement is missing.
Previous count = 1, current count = 0." I get this when executing a stored procedure upon processing a form. This error happens when I intentionally provide input to the stored procedure that I know should cause it to error out. I catch the exception, and it contains the error message, but it also contains the above message added on to it, which I don't want. I won't post the entire stored procedure. But I'll list a digest of it (Just those lines that are significant). Assume that what's included is what happens when I provide bad input:BEGINBEGIN TRYBEGIN TRANSACTION RAISERROR('The item selected does not exist in the database.', 16, 1); COMMIT -- This won't execute when the RAISERROR breaks out to the CATCH block END TRY BEGIN CATCHROLLBACKDECLARE @ErrorSeverity INT, @ErrorMessage NVARCHAR(4000)SET @ErrorSeverity = ERROR_SEVERITY()SET @ErrorMessage = ERROR_MESSAGE() RAISERROR(@ErrorMessage, @ErrorSeverity, 1) END CATCH END Okay, so that works fine. The problem is when I execute this with an SqlCommand object, on which I've opened a transaction. I won't include the entire setup of the data (with the parameters, since those seem fine), but I'll give my code that opens the connection and executes the query: con.Open(); SqlTransaction transaction = con.BeginTransaction(); command.Transaction = transaction; try { command.ExecuteNonQuery(); transaction.Commit(); } catch (Exception ex) { transaction.Rollback(); } finally { con.Close(); } I'm calling the stored procedure listed above (which has its own transaction), using a SqlCommand object on which I've opened a transaction. When there is no error it works fine. But when I give the stored procedure bad data, it gives me that message about the transaction count. Is there something I need to do in either my SQL or my C# to handle this? The entire message found in the Exception's Message is a concatenation of the message in my RAISERROR, along with the transaction count message I quoted at the beginning. Thanks, -Dan
In one of my packages, I set the package-level property called TransactionOption=Required. During run-time I saw an error saying "[Execute SQL Task] Error: Failed to acquire connection "SQL_DW". Connection may not be configured correctly or you may not have the right permissions on this connection. ". When the property is changed to anything other than Required, it works fine (the calling package that calls this package is not involved in a transaction).
The machine running the packages is Windows Server 2003, and so is the database where the data lives. I verified that the machine containing the database does has Enable Network DTC Access checked in Control Panel -> Add/Remove Windows Components -> Application Server.
Is anyone else having this problem?
Help, I had a tran log grow to it's restricted size, however the person that created this made the max size almost equal to the set max size. Needless to say I have not space to work with. SQL got bounced and my db went into recovery mode. After recovery mode was complete I tried to put my database in emergency mode but it exec's but never sets the mode. Next I tried to dbcc checkdb and I get msg 7929, level 16 state 1, line i Check statement aborted. Database contains deferred transactions. There is no back up for this database. Dev play area. I can not detatch db becase of the same error. What next? Any help would be great.
View 7 Replies View RelatedHey,
I hope someone can quickly tell me what I am obviously missing for this weird problem.
To give a general picture, I have an ASP.net webpage that allows users to select values from several dropdown menus and click an add button which formats and concatenates the items together into a listbox. After the listbox has been populated the users have the option to save the items via a save button.
The save button parses each item in the listbox to basically de-code the concantenated values and subsequently inserts them into a table residing on a backend MSSQL 2005 database.
PROBLEM:
In the process of testing the application, I noted this strange behavior. If I use the webpage to insert the values, go to the table where the values are stored and delete the rows; Upon a refresh of the web page the same actions seem to be getting replayed and the items are again inserted into the table.
Naturally, what I'd really like would be for the page to refresh and show that the items aren't any longer there and not the other way around.
If the code that performed the insert was residing in a component that was set for postback I'd expect this type of behavior but its in the Save buttons on_click event. I have tried practically everything in effort of targeting the problem but not having much luck with it.
Is this behavior practical and expected in ASP.net or has anyone ever heard of anything similar? I have never encountered this type of problem before and was hoping someone could provide some clues for resolving it. If more information is required I'd be happy to supply it. Hopefully, there's a simple explanation that I am simply unaware since I haven't experienced anything like this before.
Anybody got any ideas???
Thanks.
Hey,
Is there somewhere in MSDE (or SQL) where you can see how many transaction are made to a sertain database or by a sertain user? At this way i could figure out witch database/user uses most (or least) recources (cpu) over a period of time.
A server I'm working on has a very unique situation, where user tables and production tables reside on the same database. Users update / create tables or populates these tables, so it can't be a table-specific trigger. However, they give a new meaning to "kamikaze pilots" as it's not uncommon for them to "accidentally" update / insert / delete 500,000,000 + records in a single statement. I've tried educating them to use batching, but to no avail, so now I'm forced to stop these statements BEFORE they execute, based on rowcount, as they fill up the database log so quickly that it goes into recovery mode (It has a 200GB log file - insane, I know).
I recon the mosts transactions allowed should be 1,000,000 records in a single statement. Looking for database trigger to stop them from executing statements with large records?
Client is running X- version of application and corresponding database size is huge. Now client's vendor is releasing Y-version of same application with many database schema changes (like new tables added, new columns added, renamed existing columns and etc) To upgrade to the Y-version, vendor is suggesting to my client that down the system and do the upgrade for application/database to Y-version. We are sure that this process will take days together to upgrade to the Y-version. My client is not ready to down the system for that long. So we are trying to find the solution with minimal down time.The approach we are thinking is,
1) Create the replicated database to another server (server2) from production server(server1) using golden gate with X-version
2) Create new tables/schema updated tables from Y-version database on same server1. Here for Updated schema tables we are planning to use the name <table_name_Y_version> as the same table name exists in X-version.
3)With above 2 steps, golden gate replicate the changes from production to server1 and server1 will have the new Y-version table schema (with different concatenate name ' _Y_version'). BTW , there is no affect for the production
4) At this stage we are planning to find best approach, to fill the '<table_name>_Y_version' from X-version tables. two challenges here a) all data needs to be moved to Y-version tables b) they have to sync data in real time.
we thought of going to
a) ssis package to pump the data to Y-version tables, but real time data will not sync.
b) trigger based technique, previous experience said, lot of load
c) thinking about sql replication.
Hi,Is there a way to make a database write only, like in SQL server youcan make a DB read only? There is sensitive data which we want dontwant to read.What other alternatives can anyone think?Thanks.
View 4 Replies View RelatedI am very new to asp.net. I really mainly use PHP but want to migrate to asp.net, but it doesn't seem that easy.I am creating a page for peson to pay a subscription page where they will enter personal information an credit card information.I created the form for this with validation controls.I don't know however how to write the form data to the mssql database.I am using mssql 2005, but i would need a work out for the 2000 version as well.
View 1 Replies View RelatedI have a lot of databases under SQL Server Express 2005, reading an writing datas with VB6 (yes Visual Basic 6) and ADO (Provider SQLOLEDB). I do NOT install the SP2, but yesterday I install Silverlight and now I have SP2 on my SQL Server (9.0.3042) !?
Now I have a strange problem: I can read all datas, but I can't write any data to any tables.
Here a simple example:
I have a table "Professions", one column "RecNo" as int identity (1,1) with primary key and a column "Profession" as nvarchar(30).
Reading like this works:
Dim rcs As New Recordset
sTmp = "select * from Professions order by Profession"
rcs.Open sTmp, gcn, adOpenForwardOnly, adLockReadOnly
If rcs.RecordCount > 0 Then
Do
...
rcs.MoveNext
Loop Until rcs.EOF
End If
rcs.Close
Writing like this doesn't work anymore:
Dim lNewRecNo as long
Dim rcs As New Recordset
sTmp = "select * from Professions where RecNo = 42"
rcs.Open sTmp, gcn, adOpenKeyset, adLockOptimistic
If rcs.RecordCount < 1 Then rcs.AddNew
rcs!Profession = "XYZ"
rcs.Update
lNewRecNo = CNull2Val(rcs!RecNo)
rcs.Close
The rcs-object still give me the new record number after rcs.update, but the record is not in the database table. Adding a record in the Management Studio gives an error "row failed on retrieve on last operation". If I then click the button "Execute SQL" the new record is shown.
Another behaviour: Adding a row in the IDE like described above locks the Management Studio. From where I recieve a time out error then click the button "Execute SQL".
Any ideas whats wrong ?
This seems about the best place for my query however it does cross over a bit ... dont shoot me.
SQL 2000 sp4 on server 2003
dev env VB6
users XP Sp2
Mdac 2.8
I have a legacy app that required some simple ammendment, insert a single row of data into a simple table (Not rocket Science) Sample : insert into maintcon_mach (maintcon_id, mach_id, date) values (123, 456, getdate())
PK on maintcon_id, mach_id so that single relationship exists between maintcon_id and mach_id in the table.
The procedure above is followed by a verification procedure that checks to see if table maintcon_mach has a mach_id 456 against maintcon_id 123, this procedure returns true. So far so good, however if you step through the procedure till disconnecting from the database and then reconnect and do only the verification again, the data is missing.
The following steps to resolve have resulted in no improvement.
1. Verify MDAC in entire project and on users computers all 2.8
2 Remove transactions (just in case) and still the same.
3 Replace SQL insert with ADO (As below) and still the same.. tried this with and without transactions.
4 Tried referecing older MDACs
5 Installed SQLredist on sample machines and still the same.
rs.Open "maintcon_mach", conMach, adOpenForwardOnly, adLockOptimistic
With rs
.AddNew
!maintcon_id = lngmaint
!mach_id = lngMachID
!Date = Format(Now(), "yyyy-mm-dd")
.Update
End With
Is the problem in SQL or MDAC???
Perhaps I've missed something (Obviously have) but have run out of places to look... Any idea's
In advance ...thanx
Dear expert, please show me some examples of how I can update an Microsoft SQL table data with an excel sheet. Meaning, when I upload an excel sheet using an ASPX page the data in the excel sheet will be transfer to a particular table in the database. Thank you in advance.
View 2 Replies View RelatedI'm trying to write data from a session into database but it won't work.
Could someone help me what is wrong with this.
cobjDT = Session("cart")
For each cobjDR in cobjDT.rows
Dim cmdInsert2 as New SQLCommand("order_details", loConn)
cmdInsert2.CommandType = CommandType.StoredProcedure
cmdInsert2.Parameters.Add(New SqlParameter("@Orders", SqlDbType.int, 4,
"OrderID"))
cmdInsert2.Parameters("@Orders").Value = Request("OrderIDtext")
cmdInsert2.Parameters.Add(New SqlParameter("@PID", SqlDbType.int, 4,
"PID"))
cmdInsert2.Parameters("@PID").Value = Request(cobjDR("PID"))
cmdInsert2.Parameters.Add(New SqlParameter("@PakID", SqlDbType.int, 4,
"PakID"))
cmdInsert2.Parameters("@PakID").Value = Request(cobjDR("PAKID"))
cmdInsert2.Parameters.Add(New SqlParameter("@StyckPris",
SqlDbType.decimal, 9, "StyckPris"))
cmdInsert2.Parameters("@StyckPris").Value = Request(cobjDR("StyckPris"))
cmdInsert2.Parameters.Add(New SqlParameter("@Mangd", SqlDbType.int, 4,
"Mangd"))
cmdInsert2.Parameters("@Mangd").Value = Request(cobjDR("Quantity"))
loConn.Open()
cmdInsert2.ExecuteNonQuery()
loConn.Close()
next
When I execute this an error message comes
Server Error in '/examen' Application.
Input string was not in a correct format.
Description: An
unhandled exception occurred during the execution of the current web
request. Please review the stack trace for more information about the
error and where it originated in the code.
Exception Details: System.FormatException: Input string was not in a correct format.
Source Error:
Line 78: cmdInsert2.Parameters("@Mangd").Value = Request(cobjDR("Quantity"))Line 79: loConn.Open()Line 80: cmdInsert2.ExecuteNonQuery()Line 81: loConn.Close()Line 82: next
Source File: D:lofa.mine.nuexamenmembersTMP3thkwo1d0w.aspx Line: 80
Stack Trace:
[FormatException: Input string was not in a correct format.] System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream) +723 System.Data.SqlClient.SqlCommand.ExecuteNonQuery() +194 ASP.TMP3thkwo1d0w_aspx.Page_Load(Object Sender, EventArgs E) in D:lofa.mine.nuexamenmembersTMP3thkwo1d0w.aspx:80 System.Web.UI.Control.OnLoad(EventArgs e) +67 System.Web.UI.Control.LoadRecursive() +35 System.Web.UI.Page.ProcessRequestMain() +731
Version Information: Microsoft .NET Framework Version:1.1.4322.573; ASP.NET Version:1.1.4322.573
I use same character types in storedProcedure what they are in the
database and when I call the SP on my page the char types are same as
they are in the SP
I don't see what the problem is. Please Help
Hello,
I want to insert a value in a database table during a datareader loop. But I get an error saying that the connection (MyConnection) is already open. This is normal because it is open for processing the datareader loop. But how do I solve this? I just want to write a value for logging the process.
This is my code:
Dim iID as Integer = 1
Dim strSQLNewsLetter As String = "SELECT * FROM Members WHERE Members.Enabled=1"Dim MyCommand=New MySqlCommand(strSQLNewsLetter, MyConnection)MyConnection.Open()Dim myReader as MySQLDataReader myReader = MyCommand.ExecuteReader() While myReader.Read() If MyReader.GetMySqlDateTime(3).ToString() = "0/00/0000 0:00:00" then WriteMyLog(iID, MyReader.GetInt32(0)) End IfEnd While myReader.Close()myConnection.Close()
Function WriteMyLog(iID as Integer, iMemberID as Integer) 'Write Log after Newsletter has been sent Dim strSqlLog as String 'Create query strSqlLog = "INSERT INTO NewsLetterStats (ID, MemberID, TimeSent) VALUES (" strSqlLog &= "" & iID & "," 'NewsLetterID strSqlLog &= "" & iMemberID & "," 'MemberID strSqlLog &= "'" & MySQLTimeStamp() & "')" 'Timestamp Dim MyCmdLogNews As New MySqlCommand(strSqlLog, myConnection) MyCmdLogNews.Connection.Open() MyCmdLogNews.ExecuteNonQuery() MyCmdLogNews.Connection.Close()End Function
Hi folks,
Do you guys know how to write the Script to update the SQL database? please help me out? For example, the script will update SQL database at 1:00 am every day...some like that?
Thanks,
Vu
can anyone help me here/i want to write connect to my sqldatabase and then perform insert query ,select query, update query from my default.aspx.cs file.but i dont know how to do this.can anyone explain me this in detail.?i want to my data in my webform in the sqldatabase, select it , and update it.how can i do this writing a code in c#.? plz explain in detail.i m using vwd2005 express and sql express.thanks.
View 1 Replies View RelatedHello,Could some clarify for me? I’ve been told that I should add lock statements to my database write querys (update, delete, insert). I’m not sure If it’s necessary though. The only documentation I’ve found so far is how to implement a lock statement with threading but I’m not using the threading namespace. What best practice and how would I implement this without threading or should I be using threading?Thanks in advance!
I can access Microsoft Access database via ODBC on Windows 2000 usingC++. Now, I would like to use the SAME piece of code to access MS SQLon Windows. Can I achieve this without any modification to my existingcodes?Then, I would like to use the SAME piece of codes to access Oracleon Windows? Is it possible?Thanks in advance!
View 1 Replies View RelatedIs it possible to write query from different database engines?
One database A is in local server database engine and another database B is in another server located in different system.
Now , I need to write a query in database A based on table A and table B (another database engine).
I have a web form that is an interface for a database. The code was working fine until a field needed to be added. So I added the new field, updated the data adapter and data set, and when i enter the data into the field, all of the old fields are getting updated, but the new ones aren't. I am at wits end as to why. Can someone please help!!! I am using VS Studio 2000 ASP.NET and C#. The code is below. The bold items are the new fields.using System;using System.Collections;using System.ComponentModel;using System.Data;using System.Drawing;using System.Web;using System.Web.SessionState;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.HtmlControls;namespace TrafficDept{/// <summary>/// Summary description for AddOwner./// </summary>public class AddOwner : System.Web.UI.Page{protected System.Web.UI.WebControls.Button Button1;protected System.Web.UI.WebControls.RequiredFieldValidator RequiredFieldValidator3;protected System.Data.SqlClient.SqlConnection sqlConnection1;protected System.Web.UI.WebControls.TextBox TextBox1;protected System.Web.UI.WebControls.TextBox TextBox2;protected System.Data.SqlClient.SqlDataAdapter daAddOwner;protected System.Web.UI.WebControls.TextBox tbOtherOwnerLName;protected System.Web.UI.WebControls.Panel namePanel;protected System.Web.UI.WebControls.TextBox tbOtherOwnerMI;protected System.Web.UI.WebControls.TextBox tbOtherOwnerFName;protected System.Web.UI.WebControls.TextBox tbSecondOwnerLName;protected System.Web.UI.WebControls.TextBox tbSecondOwnerMI;protected System.Web.UI.WebControls.TextBox tbSecondOwnerFName;protected System.Web.UI.WebControls.Button Button4;protected SiteCubed.EditWorksProfessional tbNote;protected System.Web.UI.WebControls.Panel notePanel;protected System.Web.UI.WebControls.DropDownList ddlStatus;protected PeterBlum.PetersDatePackage.DateTextBox tbRegDate;protected System.Web.UI.WebControls.RequiredFieldValidator RequiredFieldValidator2;protected System.Web.UI.WebControls.TextBox tbOwner;protected System.Web.UI.WebControls.RequiredFieldValidator RequiredFieldValidator1;protected System.Web.UI.WebControls.TextBox tbOwnerMI;protected System.Web.UI.WebControls.TextBox tbOwnerLName;protected System.Web.UI.WebControls.RequiredFieldValidator RequiredFieldValidator4;protected System.Web.UI.WebControls.TextBox tbBusinessName;protected System.Web.UI.WebControls.TextBox tbAddress;protected System.Web.UI.WebControls.TextBox tbRegNo;protected System.Web.UI.WebControls.TextBox tbPreviousOwner;protected System.Web.UI.WebControls.TextBox tbPOwnerAddress;protected System.Web.UI.WebControls.TextBox tbPORegNo;protected PeterBlum.PetersDatePackage.DateTextBox tbTransferDate;protected System.Web.UI.WebControls.DropDownList ddlMeans;protected System.Web.UI.WebControls.Button Button3;protected System.Web.UI.WebControls.Button Button2;protected System.Data.SqlClient.SqlCommand sqlSelectCommand1;protected System.Data.SqlClient.SqlCommand sqlInsertCommand1;protected System.Data.SqlClient.SqlCommand sqlUpdateCommand1;protected System.Data.SqlClient.SqlCommand sqlDeleteCommand1;protected TrafficDept.dsAddOwner dsAddOwner1; private void Page_Load(object sender, System.EventArgs e){// Put user code to initialize the page here}#region Web Form Designer generated codeprivate void Button2_Click(object sender, System.EventArgs e){Response.Redirect("AddOthers.aspx");}private void Button1_Click(object sender, System.EventArgs e){daAddOwner.Fill(dsAddOwner1);dsAddOwner.OwnershipRow drOwner = dsAddOwner1.Ownership.NewOwnershipRow();drOwner.Plates_ID = int.Parse(Session["PlatesID"].ToString());drOwner.Status = ddlStatus.SelectedItem.Text;drOwner.Current_Legal_Owner = tbOwner.Text;drOwner.Owner_CurrentLegalOwnerMI = tbOwnerMI.Text.ToString();drOwner.Owner_CurrentLegalOwnerLName = tbOwnerLName.Text;drOwner.Owner_CurrentBusinessName = tbBusinessName.Text;if (!tbRegDate.xIsEmpty)drOwner.Date_of_Registration = DateTime.Parse(tbRegDate.Text.ToString());drOwner.Address_of_Current_Owner = tbAddress.Text;drOwner.Reg_No_for_Current_Owner = tbRegNo.Text;drOwner.Previous_Owner = tbPreviousOwner.Text;drOwner.Previous_Owner_Address = tbPOwnerAddress.Text;drOwner.Reg_No_for_Previous_Owner = tbPORegNo.Text;if (!tbTransferDate.xIsEmpty)drOwner.Date_of_Transfer = DateTime.Parse(tbTransferDate.Text.ToString());drOwner.By_Means_of = ddlMeans.SelectedItem.Text;drOwner.Owner_SecondaryLegalOwnerFName = tbSecondOwnerFName.Text;drOwner.Owner_SecondaryLegalOwnerMI = tbSecondOwnerMI.Text;drOwner.Owner_SecondaryLegalOwnerLName = tbSecondOwnerLName.Text;drOwner.Owner_OtherLegalOwnerFName = tbOtherOwnerFName.Text;drOwner.Owner_OtherLegalOwnerMI = tbOtherOwnerMI.Text;drOwner.Owner_OtherLegalOwnerLName = tbOtherOwnerLName.Text;drOwner.Owner_Notes = tbNote.Text;dsAddOwner1.Ownership.Rows.Add(drOwner);daAddOwner.Update(dsAddOwner1);Response.Redirect("AddOthersTP.aspx");}private void Button3_Click(object sender, System.EventArgs e){//daAddOwner.Fill(dsAddOwner1);//dsAddOwner.OwnershipRow drAddOwner = dsAddOwner1.Ownership.NewOwnershipRow();namePanel.Visible = true; }private void Button4_Click(object sender, System.EventArgs e){notePanel.Visible = true;}}}
View 1 Replies View RelatedHello All,
My boss told me that we can write migration scripts to database using Sql server management studio. can someone guide me or point to a website which explains in detail how to do this please. i want to learn this. or even a tutorial also would be great. i am interested in writing or executing scripts by using sql server management studio( in sql server 2005). i think its called sql enterprise manager in sql server 2000.
Thanks a lot.
Hello all,
When I create a new database and replicate to it using BeginMonitoredBackgroundSync :
Code Block
public void BeginMonitoredBackgroundSync(string User)
{
CreateReplicationInstance(User);
repl.BeginSynchronize(
OnSimplifiedSynchronizeComplete,
SqlCeReplication_OnStartTableUpload,
SqlCeReplication_OnStartTableDownload,
SqlCeReplication_OnSynchronization,
repl);
}
private void CreateReplicationInstance(string User)
{
repl = new SqlCeReplication();
string host = repl.HostName;
repl.HostName = User;
string dbFilePath = "";
dbFilePath = System.IO.Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().GetName().CodeBase) +
"\" + repl.HostName + ".sdf";
string myConnectionString = string.Format("Data Source = {0};PWD = {1}", dbFilePath, sqlSettings.Items["SqlPassword"]);
repl.InternetUrl = dynamicsReplicationSettings.ReplicationSettingsItems["InternetUrl"];
repl.PublisherSecurityMode = SecurityType.DBAuthentication;
repl.Publisher = dynamicsReplicationSettings.ReplicationSettingsItems["Publisher"];
repl.PublisherDatabase = dynamicsReplicationSettings.ReplicationSettingsItems["PublisherDatabase"];
repl.PublisherLogin = dynamicsReplicationSettings.ReplicationSettingsItems["PublisherLogin"];
repl.PublisherPassword = dynamicsReplicationSettings.ReplicationSettingsItems["PublisherPassword"];
repl.Publication = dynamicsReplicationSettings.ReplicationSettingsItems["Publication"];
repl.Subscriber = "RemoteSubscription" + repl.HostName;
repl.SubscriberConnectionString = myConnectionString;
repl.ConnectionRetryTimeout = 120;
repl.LoginTimeout = 120;
repl.CompressionLevel = 6;
if (File.Exists(dbFilePath))
{
FileInfo info = new FileInfo(dbFilePath);
if (info.Length <= 20480)
{
File.Delete(dbFilePath);
repl.AddSubscription(System.Data.SqlServerCe.AddOption.CreateDatabase);
}
}
else
{
repl.AddSubscription(System.Data.SqlServerCe.AddOption.CreateDatabase);
}
primeConnection();
}
After the replication finishes, I dispose the replication object like so:
Code Block
void OnAsyncSynchronizeComplete(IAsyncResult asyncResult)
{
try
{
repl.EndSynchronize(asyncResult);
if (repl != null)
{
repl.Dispose();
repl = null;
}
if (ReplicationComplete != null) ReplicationComplete(this, true);
}
catch(Exception ex)
{
if (ReplicationComplete != null) ReplicationComplete(ex, false);
}
}
Then later, if I try to update, insert or delete to the database, the application will hang. I can read from it, but I cannot write. If I close the application down and open it back up without replicating, I will not get any lockups. It also will not hang up after any replications prior to the create replication. I think I am doing something wrong in the initial replication that is holding on to some connection to the DB causing it to lock up. Has anyone seen anything like this before?
Hi there,
Does anyone know a way (a query perhaps?) to determine which logins have write permissions to a specific database on SQL Server 2005? Ive thought about joining sys.syslogins & sys.sysusers but looking at the columns, not sure which one would render me that info.
Any help is appreciated. Many thanks!
After a period of use (typically 1-2 hours), an application using SQL Server Express stops writing to the database, whilst still continuing to read from it. As far as I can tell, no error message is generated by any operation. The application is written in VB Express and is executed on several machines, with SQL Server Express on a central machine. Re-starting the application on the affected machine restores normal operation.
The problem on one machine does not cause a similar problem elsewhere at the same time (hence it appears to be an issue with the relationship between the application and SQL Server)
This does not appear to relate to the response to Q asked by sgcook on 9 may as we are not using user instances, but only a bare minimum connection string.
Hi frdz, I m creating my web-application in asp.net with C# 2005 and using sql server 2005. I have created the stored procedure for the insert,update. I want to know how to write the mathematical calculations in the stored procedure.. Pls tell me from the below stored procedure were i m making the mistake ?? As the discount and the total amount are not calculated by itself....and stored in the database How to convert the @discpercent numeric(5,2) to@discpercent ="NoDiscount" should be displayed when no discount is being given to the customers.... ALTER PROCEDURE CalculationStoredProcedure
@accountid int output,
@accountname varchar(20),
@opbal numeric(10, 2),
@opbalcode char(2),
@total numeric(10, 2),
@clbal numeric(10, 2),
@clbalcode char(2),
@discpercent numeric(5,2),
@discamt numeric(10, 2)
as
begin
set nocount on
if @opbal IS NULL OR @opbal = 0
begin
select @opbal=0
select @opbalcode= ' '
select @clbal= 0
select @total= 0
select @clbalcode= ' '
@discpercent ="NoDiscount"
@discamt=0
end
select @accountid = isnull(max(accountid),0) + 1 from accountmaster
select @total=@opbal - @clbal from accountmaster
select @discamt=@total* @discpercent/100 from accountmaster
begin
insert into accountmaster
(
accountname,opbal,opbalcode,clbal,clbalcode
)
values
(
@accountname,@opbal,@opbalcode,@clbal,@clbalcode
)
end
set nocount off
end
Thanxs in adv...
How do I determine the read/write frequency on a database table? I am trying to do this on a 2012 and 2008 R2 servers.
View 2 Replies View RelatedHi to all DBAs,
I would like to ask if there will be a write and concurrency issue if i would create an online application with just one user connecting to the database, just like most open source php/mysql that can be downloaded
i.e
Setup 1. I will grant a single user that will connect to a database and will be set to a config.inc.php file and then create a table users (userid, username, password) and this table will be used for the application authentication and access control.
Setup 2. or is it much better to grant users that will connect to the database and have the table users for access control of the application?
to further illustrate my query:
Setup 1 would be:
###################Table: Users
user a@ipadd --> db1 --> userid mary --> myOnlineApp
user a@ipadd --> db1 --> userid john --> myOnlineApp
user a@ipadd --> db1 --> userid paul --> myOnlineApp
and Setup 2 would be:
#####################Table: Users
user mary@ipadd --> db1 --> userid mary --> myOnlineApp
user john@ipadd --> db1 --> userid john --> myOnlineApp
user paul@ipadd --> db1 --> userid paul --> myOnlineApp
will Setup 1 be enough if I will use SQL Server as database?
or Setup 2 is better user/database architecture?
This application will be online enrollment for a school with 16,000 students
very much appreciated for the feedbacks and suggestions
^_^x
I am testing out a blank database created over two physical files on two separate disks with one table called data which has one column called values nvarchar(max).
I filled the table up with a whole load of data and ran a select * against it. If I run Permon at the same time I can see that the read load has been spread over multiple disks as each of these disks is getting read from in parallel. If I create the same database on a single file and run the same select * again it takes much longer, proving that the read load has been distributed across multiple disks.
Now moving onto writes, this is where the confusion lies. I understand that SQL server fills files evenly until they need growing, after which it will then fill files individually until they are full in a round robin fashion unless you have trace 1117 turned on. What I don't understand is why the writes aren't distributed out whilst it is filling these file groups.
I ran an continual insert into my table with go 1000000 to monitor how the files are being filled up. I monitored where SQL server was physically placing the files as they were being inserted by running the following query:
;WITH CTE AS
(SELECT
sys.fn_PhysLocFormatter (%%physloc%%) col1,
RIGHT(LEFT(sys.fn_PhysLocFormatter (%%physloc%%),2),1) AS [Physical RID],
DATAID
[Code] ....
I could see that it would a thousand or so records into file 1, then a thousand or so into file 2, then a thousand or so into file 1 etc etc. In another words it would hit one disk, then another disk, then back to disk one to fill the file evenly. Is there any way to make SQL Server distribute the writes out in parallel so that both disks are writing in tandem?
By the looks of it, multiple disks only scale reads, as with writes only one disk is ever written to at once which is annoying. Any way to harness the write power of multiple disks?
Hi,
I tried to backup the master key by the following syntax :
OPEN MASTER KEY DECRYPTION BY PASSWORD = 'mypassword'
BACKUP MASTER KEY TO FILE = 'c: empmaster' ENCRYPTION BY PASSWORD = 'mypassword'
but it failed and i got the following message:
Cannot write into file 'c: empmaster'. Verify that you have write permissions, that the file path is valid, and that the file does not already exist.
NB: I am using the "sa" user to execute this command.
I know that we have a security permission issue , but where and how ?
Regards,
Tarek Ghazali
SQL Server MVP