Locks Preventing Backup Of Database
Jul 20, 2005
The database is configured for single publisher, many subscribers,
merge replication. The maintenance plan started to fail a couple of
months ago and the database would not get backed up. After clearing
all the locks, I am able to backup the database manually. The locks
return again and I'm not able to backup the database with the
maintenance plan. How can I get around the lock issue or solve it so
that I can backup the database again?
Thanks,
Chris
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Jul 20, 2005
When I am trying to use backup or restore from the EM, a dialog boxnever pops up, and the EM interface locks up. Has anyone else hadproblems like this? Looks like all other functions from EM areworking fine.Thanks,Dave
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Dec 31, 2007
This morning I found that during the night someone hacked into my remote hosted SQL server 2005 database. Every record in a description field in each of three tables had everything after the first sentence replaced with the same URL. The three pages that used these tables badly infected anyone who viewed them in IE.I had my host restore the 12/30 backup, and I changed all the database and ftp passwords, now I want to be sure my code isn't giving anyone access. I'm using strongly typed datasets. This is my code behind code.Dim sCategory = Request.QueryString("cat")Dim ResourceAdapter As New ResourcesTableAdapters.ResourcesTableAdapterDim dF As Data.DataTable = ResourceAdapter.GetDataByCategory(sCategory)Dim numRows = dF.Rows.CountLabelCat.Text = sCategoryRepeater1.DataSource = dFRepeater1.DataBind() Is there anything I can do to better secure this? Oh, my connect string is in the web.config file only, but it isn't encrypted. I will be encrypting it today.Diane
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Jan 31, 2006
Hi all.. I've been scouring the forums for about 6 hours to no
avail. This is a really simple question. I'm trying to have
a registration page that lets the user input name, email, desired
username, and password. I want to check the username and email
fields to make sure ppl cannot sign up twice. So from what I've
gathered I have a couple of options:
1) i can set up a unique constraint on the database columns,
2) i can run a select statement before inserting,
3) i can store the whole database column in a variable then search through it.
My question is how to do option 2? All of my transactions are through a sqldatasource object in c#.
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Feb 24, 2006
Hi
I have a problem. Every time I select the first Item of a dropdownlist, it prevents the Insert to the database. There are 8 droplists on the page but the insert is only effected by the First Item of lstTheme selcetion.
My Insert code is here: Any ideas??
Private Sub btnInsertChange_Click(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.CommandEventArgs) Handles btnInsertChange.Command
Me.SqlCommandThemeTest.Connection = Me.SqlConnection1
Dim Name As String
Dim values As String
Name = "Theme, Guide, GuidePage, PageType, ChangeCategory, ChangeFrom, ChangeFromText, ChangeTo, ChangeToText, ContentManager, date"
values = "lstTheme, lstGuideName, lstGuidePage, lstPageType, lstChangeCategory, lstChangeFrom, txtChangeFrom, lstChangeTo, txtChangeTo, DropDownList1, txtDate"
SqlCommandThemeTest.CommandText = "INSERT INTO dbo.ChangesReport (Theme, Guide, GuidePage, PageType, ChangeCategory, ChangeFrom, ChangeFromText, ChangeTo, ChangeToText, ContentManager, date) VALUES (@themeValue, @guideValue, @guidepageValue, @pagetypeValue, @changecategoryValue, @changefromValue, @changefromtextValue, @changetoValue, @changetotextValue, @contentmanagerValue, @dateValue)"
SqlCommandThemeTest.Parameters.Add("@themeValue", lstTheme.SelectedItem.Text)
SqlCommandThemeTest.Parameters.Add("@guideValue", lstGuideName.SelectedItem.Text)
SqlCommandThemeTest.Parameters.Add("@guidepageValue", lstGuidePage.SelectedItem.Text)
SqlCommandThemeTest.Parameters.Add("@pagetypeValue", lstPageType.SelectedItem.Text)
SqlCommandThemeTest.Parameters.Add("@changecategoryValue", lstChangeCategory.SelectedItem.Text)
SqlCommandThemeTest.Parameters.Add("@changefromValue", lstChangeFrom.SelectedItem.Text)
SqlCommandThemeTest.Parameters.Add("@changefromtextValue", txtChangeFrom.Text)
SqlCommandThemeTest.Parameters.Add("@changetoValue", lstChangeTo.SelectedItem.Text)
SqlCommandThemeTest.Parameters.Add("@changetotextValue", txtChangeTo.Text)
SqlCommandThemeTest.Parameters.Add("@contentmanagerValue", DropDownList1.SelectedItem.Text)
SqlCommandThemeTest.Parameters.Add("@dateValue", txtDate.Text)
Try
Me.SqlConnection1.Open()
Me.SqlCommandThemeTest.ExecuteNonQuery()
Catch ex As Exception
Response.Write(ex.ToString)
Finally
Me.SqlConnection1.Close()
End Try
Response.Redirect("WebForm3.aspx")
End Sub
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Oct 4, 2007
I have a user AD account SOPUSJSmith for example. I have given this account security admin at the SQL Server level and dbo at the database level. Is there any way to prevent them from using ODBC to pull data into an Access DB or an Excel spreadsheet?
Thanks in Advance - SOX is killing me!
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Jan 27, 2007
I am trying to deploy a SQL Server Express database to a remote SQL Server 2005 host. I was planning to copy and paste the data from my local tables to the remote tables using Management Studio Express but my ISP (NTL) appears to be blocking port 1433 and preventing me from getting a connection to the remote database.
Will an upgrade to SQL Server 2005 Developer Edition help me? I understand that it has a Backup & Restore Wizard but how does this work? Does it rely on a remote connection and will it fall foul of the NTL port blocking? Or, can the file that the Backup stage produces be copied into the web-based MSSQL Manager, that my web host provides, to restore to the remote database?
Any help would be much appreciated.
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Feb 14, 2008
we're in a business where customers often ask for a foolproof scheme that even prevents folks with DB privileges from fraudulently inserting, updating or deleting data. The scheme must be so air tight that a judge can be convinced of its reliability.
What are the most effective schemes out there?
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Jul 7, 1999
I am attempting to drop a database (sales), however I receive this message: Error 3274 is "Cannot drop the database 'sales' because it is published for replication." Yet, I no longer have any publications in this database. It seems that there is some orphaned information related to a publication that existed. Any help would be great.
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Oct 13, 2015
We are running SQL Server 2014 Web Edition (64-bit). On three occasions now we have had two of our live secondary log shipping databases become unusable through the log shipping process. We ship logs to these databases every five minutes, and generally the process works fine. However, on three occasions in as many months we have suddenly received alerts warning us that the transaction log restores could not be performed on the secondary databases. The SQL Server Error Log revealed the following:
Date,Source,Severity,Message
10/13/2015 04:01:16,spid52,Unknown,Setting database option SINGLE_USER to ON for database 'ObfuscatedName'.
10/13/2015 04:01:17,spid52,Unknown,Starting up database 'ObfuscatedName'.
10/13/2015 04:01:17,spid52,Unknown,Recovery is writing a checkpoint in database 'ObfuscatedName' (8). This is an informational message only.
[code].....
An error occurred during recovery, preventing the database 'ObfuscatedName' (8:0) from restarting. Diagnose the recovery errors and fix them, or restore from a known good backup. If errors are not corrected or expected, contact Technical Support."
The extract above shows two previously successful restores to the secondary database. Suddenly, at 04:11:16, the database can no longer be started up or restored to. This is despite CHECKDB giving a clean bill of health only five minutes earlier. The result is that the last three lines are then repeated ad infinitum.
The only way we have managed to get around this issue so far is to replace the secondary database with a recent backup of the primary. Once this is in place, any outstanding transaction logs are successfully applied when the log shipping restore job next runs. However, this seems rather drastic.It is rather concerning that our warm-standby databases continue to become corrupted without any apparent explanation from SQL Server.
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Jul 16, 2015
I've got an INSERT that's selecting data from a linked server and attempting to push 10 million rows into the blank table. More or less, it looks like this:
insert into ReceivingTable (
Field1, Field2, Field3, Field4
, Field5, Field6, Field7, Field8
, Field9, Field10, Field11, Field12
, Field13, Field14, Field15
[code]...
The instance of the SQL Server Database Engine cannot obtain a LOCK resource at this time. Rerun your statement when there are fewer active users. Ask the database administrator to check the lock and memory configuration for this instance, or to check for long-running transactions. There are no other active users. I ran it again and monitored the following DMO to watch the growth of locks for that spid:
SELECT request_session_id, COUNT (*) num_locks
-- select *
FROM sys.dm_tran_locks
--where request_session_id = 77
GROUP BY request_session_id
ORDER BY count (*) DESC
The number of locks started small and held for a while around 4-7 locks, but at about 5 minutes in the number of locks held by that spid grew dramatically to more than 8 million before finally erroring again with the same message. Researching, I can't figure out why it's not escalating from row locks to table locks at the appropriate threshold. The threshold in was set to 0 at first (Server Properties > Advanced > Parallelism > Locks). I set it to 5000, and it still didn't seem to work. Rewriting the INSERT to include a WITH (TABLOCK) allows it to finish successfully in testing. My problem is that it's coming out of an ETL with source code that I can't edit. I need to figure out how to force it to escalate to locking the entire table via table or server level settings.
A colleague suggested that installing service packs may take care of it (the client is running SQL Server 2008 R2 (RTM)), but I haven't found anything online to support that theory.
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Aug 5, 2015
We are migrating our database(s) from ORACLE to SQL. In Oracle we were able to issue a SELECT statement and see all of the locks (Blocking and Non-Blocking) currently in the system. The query also included the Process ID of the process we needed to kill in order to get rid of the lock.
We now need to create the same type of query for Microsoft SQL Server 2012. I have seen postings on different sites saying that this info can be obtained using SP_WHO2 or using the SQL Server Management Studio Activity Monitor's PROCESSES tab, but we are looking for a SELECT statement that will give us similar information.
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Jul 9, 2002
How do I temporarily lock a database (read-only mode) programatically?
For example:
BeginTrans
//LOCK OUT ALL OTHER USERS
//Only the Server has Write access
CommitTrans
THANKS!
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Nov 22, 2007
Our enterprise consists of a mix of mission-critical transaction-oriented applications. The ERP applications are accessed by 70 branch offices around the country. The network also carries file transfers, e-mail, and Web traffic. Each branch is linked to headquarters via a Frame Relay network with port speeds of 64Kbps.
We are facing problems when ERP database locks up and cause time-outs and frustrating messages such as: "User disconnected - unknown error."
Rachel
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Oct 30, 2007
Greetings:
I've a stored procedure that grabs from a table all of the records that have a status = 2. Once these records are grabbed the same stored procedure needs to update the status of the records to 3. Something like this:
SELECT
*
FROM
[MyTable]
WHERE
Status = 2
UPDATE
[MyTable]
SET Status = 3
WHERE
Status = 2
What I'm afraid will happen is that between the running of the select statement and the running of the update statement that a record that originally had a status of 1 will be set to 2 - which means the record was never selected by the first half of the stored procedure but had its status updated to 3 in the second half of the stored procedure.
I thought at first wrapping all of this in a transaction would fix the problem but I've done some more reading and that doesn't seem to be the case. I need the Update to run on only those records the Select query grabbed no matter what else happens in the table.
Is there a lock to address this in a way that will allow other records (those not selected) to be updated to a value of 2 without them being updated to 3 when the Update query runs?
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Apr 9, 2008
I have a problem when i restore my .DAT_BAK file. I am getting error like "The backup set holds a backup of a database other than existing database. Restore Database is terminating abnormally".
I tried by using
RESTORE DATABASE <DATABASENAME>
FROM DISK = 'D:DATAMYTEST.DAT_BAK'
WITH MOVE 'VZAI_DATA' TO D:PROGRAM FILES..MSSQLTEST.MDF',
MOVE 'VZAI_LOG' TO D:PROGRAM FILES..MSSQLTEST.LDF',
REPLACE
And also i tried like
RESTORE DATABASE <DATABASENAME>
FROM DISK = 'D:DATAMYTEST.DAT_BAK'
WITH REPLACE
When i use like this,
RESTORE FILELISTONLY FROM DISK = 'D:DATAMYTEST.DAT_BAK'. I am able to get the output as LogicalName, PhysicalName, Type, FileGroupName, Size, etc.
Can i anyone please help me out?
Thanks in Advance,
Anand Rajagopal
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Jan 24, 2008
Hi,
I had application that access the database 'test'. Now i created a ETL package, in this Souce database is 'test' and destination database is 'mytest'. I have scheduled the job for every hour.
Now, i want to know that whether any locks will create on source database 'test' while ETL package is running.
Thanks
Dinesh
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Jan 31, 2008
Hi there
I'm getting this message on my third automated backup of the transaction logs of the day. Both databases are in full recovery mode, both successfully backed up at 01.00. The transaction logs backed up perfectly happily at 01:30 and 05:30, but failed at 09:30.
The only difference between 05:30 and 09:30's backups is that the log files were shrunk at 08:15 (the databases in question are the ones that sit under ILM2007, and keeping the log files small keeps the system running better).
Is it possible that shrinking the log files causes the database to think that there hasn't been a full database backup?
Thanks
Jane
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Jan 20, 2005
Hi,
I am joining a table with a view in my query to get the desired data. But when I run this query it does not produce any result, instead the execution goes on never ending finally locking the database.
Surprisingly if the selected data from this view is put in a temporary table and that table is joined with the table to get the result, it works fine.
Could anybody please help me with this as creating a table every time would be slow procedure. Is there any restrictions related to views which may be I have ignored.
Thanx in advance.
Regards,
Sushma
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Jan 3, 2008
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?
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Jul 12, 2006
Hi,
I want to make SQLTransaction as global and use it checking the State.
But then where there are Only Select queries are going to fire, it will open transaction.
So, Does it locks database/tables when Only Select query comes in SQLTransaction.
If you have another successful way of doing this, Please suggest.
Thanking you.
tats
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Jul 15, 2015
We take a full backup in the early morning and hourly transaction log back during the working hours for one database in the production server. The application team made certain changes to the design of the said database in their development server. The backup from the development server was restored to the production server during working hours. After the restoration should we take a full backup before next transactional logbackup? Would the transactional log backup with out a full backup after the restoration of a database be valid?
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Nov 16, 2015
I have a database that is just over 1.5GB and the Full backup that is 13GB not sure how this is since we have compression on for full backups and my other full backups are much smaller than there respective databases...Now my full backup is taken every Sunday night and the differentials are taken every 6 hours after the full backup. Now I have been thrown into this DBA role with little to no experience just what I have picked up and read. So my understanding of backups are limited but what I think I understand is that we take a full backup and the differential only captures what changes in the database so my question is why is my database 1.5GB but my differential is 15.4GB? I have others database that are on the same instance and don't seem to have this problem. I also just noticed that we do not rebuild the index before a full backup like we do on other instances...
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Aug 4, 2007
Backup failed to complete the command backup database [ ] TO VIRTUAL DEVICE = ' { 853D3FC0 - 45EA -85B1 - 54F0EA379CAC } 24 ' WITH SNAPSHOT , BUFFERCOUNT = 1 , BLOCKSIZE = 1024
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Apr 1, 2008
I should restore a SQL Server 2005 Database from backup. The backup contains three files, named user.bak0, user.bak1 and user.bak2.
How is the syntax of the restore filelistonly and the restore database ... ?
I usualy write
restore filelistonly from disk = 'path and filenam.bak'
restore database. zy
from disk = 'path and filename.bak'
with replace,
move.....
move....
This works but I cannot use it with a splitted backup file. The files are much too big to put together to one file.
Thanks in advance for any help.
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Oct 17, 2006
I have a full backup and several diff backup,now i want to restore
firstly,I restore full backup
RESTORE DATABASE ***
FROM DISK = 'D:databackup200610140000.bak'
WITH NORECOVERY
GO
it's working,then i don;'t know how to continue
Thanks in advance
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Feb 10, 2006
Hi All,I am facing this issue very frist time. I add a logical device asfollowing:USE masterGOEXEC sp_addumpdevice 'disk', 'AdvWorksData','C:Program FilesMicrosoft SQLServerMSSQL.1MSSQLBACKUPAdvWorksData.bak'-- Create a logical backup device, AdvWorksLog.USE masterGOEXEC sp_addumpdevice 'disk', 'AdvWorksLog','C:Program FilesMicrosoft SQLServerMSSQL.1MSSQLBACKUPAdvWorksLog.bak'-- Back up the full AdventureWorks database.BACKUP DATABASE AdventureWorks TO AdvWorksData-- Back up the AdventureWorks log.BACKUP LOG AdventureWorksTO AdvWorksLogThe database backup is completed successfully but log's backup failswith the following messages:Msg 4214, Level 16, State 1, Line 1BACKUP LOG cannot be performed because there is no current databasebackup.Msg 3013, Level 16, State 1, Line 1BACKUP LOG is terminating abnormally.We are moving from SQL 2000 to SQL 2005. I have ensured that databasehas full recovery mode on. We are using SQL 2005 on Windows 2003 ServerSP1.Further more, I also created a plan to test it, and plan also failswhen backing up the logs.Can anyone shed some light on this issue.Thanks in advance.Najm
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Nov 14, 2006
Hi,
I have a MS SQL Server 2005 Enterprise Edition 9.0.2153 which manages my BizTalk Server 2006 Databases. The BizTalk server installer automatically creates a job named Backup BizTalk Server (BizTalkMgmtDb) which should back up the databases and transaction protocolls.
The SQL Server Agent runs under domain-administrator account which has full access to my backup directory D:ackups.
The job executes the following steps:
Step 1: BackupFull:
Command:
exec [dbo].[sp_BackupAllFull_Schedule] 'd' /* Frequency */, 'BTS' /* Name */, 'D:Backups' /* location of backup files */
Step 2: MarkAndBackupLog
Command:
exec [dbo].[sp_MarkAll] 'BTS' /* Log mark name */, 'D:Backups' /* location of backup files */
My challenges are:
1. The job doesn't back up my databases(D:Backups is empty after executing the job)
2. I get every time the following error in error protocol of the job:
BACKUP LOG cannot be performed because there is no current database backup. [SQLSTATE 42000] (Fehler 4214) BACKUP LOG is terminating abnormally. [SQLSTATE 42000] (Fehler 3013).
I have already switched the Databases from full to simple recovery mode and vica versa, it didn't help. Also, the above stored procedures doesn't include neither the TRUNCATE nor the LOG parameters for the logfiles so I wasn't able to solve this issue by adjusting these flags.
Any help would be appreciated.
Thanks in advance,
Greg
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Nov 15, 2007
I am using sql server 2000 and windows server 2003 standard edition:
My database backup job is failing due to lack of disk space. I am taking the backup onto E drive and the
available free space on E drive is 6.85 GB and there are no other drives I can use for the database backups.
The size of mdf file is 21 GB and that of ldf file is 4.2 GB.
The transaction log back up job of that db ran fine.
This database recovery model is Full and
Auto shrink is not checked.
There is one primary filegroup for the database.
In this situation, I am thinking of the following option:
1. Backup the db and log files onto another network shared drive.
If I want to still use the same server E drive to backup the db and log files instead of using another network shared drives.
how can I do that.
Please let me know the best way of handling this issue.
Any help is greatly appreciated. Thanks!
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Oct 14, 2007
I neglected to backup the transaction log as part of the process of backing up the database. Now i only have the backup file for the database and no transaction log backup. When i try to do a restore on the database, i get the error on a "tail log missing" message (which i'm assuming is that it's looking for the t-log backup?).
Is it possible to restore or even restore to a new database? I'm only looking to retreive data from 2 tables within the backup file.
Thanks!
SQL Server 2005 on Windows 2003 Server x64.
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Jul 4, 2007
1 ALTER PROCEDURE links_GetAllLinks
2 @startRowIndex INT,
3 @maximumRows INT,
4 @sortExpression nvarchar(50)
5 AS
6
7
8
9
10
11 SET @startRowIndex = @startRowIndex + 1
12 --SELECT @TopicsFrom = CASE @TopicsDays WHEN '1' THEN DATEADD(day,-1,getdate()) WHEN '2' THEN DATEADD(day,-7,getdate()) WHEN '3' THEN DATEADD(day,-14,getdate()) WHEN '4' THEN DATEADD(month,-1,getdate()) WHEN '5' THEN DATEADD(month,-3,getdate()) WHEN '6' THEN DATEADD(month,-6,getdate()) WHEN '7' THEN DATEADD(year,-1,getdate()) ELSE DATEADD(year,-1,getdate()) END
13 -- populate the table CAST(getdate() as int)
14
15
16 IF @sortExpression LIKE ''
17 BEGIN
18 SET @sortExpression = 'links_Links.link_date'
19 END
20 DECLARE @sql nvarchar(4000)
21 SET @sql = 'Declare @Links TABLE
22 (RowNumber INT,
23 link_id INT,
24 cat_id INT,
25 cat_title VARCHAR(100),
26 sub_id INT,
27 sub_name VARCHAR(100),
28 link_aproved BIT,
29 link_name VARCHAR(100),
30 link_url varchar(100),
31 link_desc varchar(500),
32 link_date datetime,
33 link_rating INT,
34 link_ratingscount INT,
35 link_ratingvalue INT,
36 link_poster uniqueidentifier,
37 link_comments INT,
38 hit_date datetime);INSERT INTO @Links
39 SELECT ROW_NUMBER() OVER (ORDER BY ' + @sortExpression + '), links_Links.link_id, links_Links.cat_id, links_Categories.cat_title, links_Links.sub_id, links_SubCategories.sub_name, links_Links.link_aproved, links_Links.link_name, links_Links.link_url, links_Links.link_desc, links_Links.link_date, links_Links.link_rating, links_Links.link_ratingscount, (links_Links.link_rating/links_Links.link_ratingscount) as link_ratingvalue, links_Links.link_poster, links_Links.link_comments, links_Links.hit_date
40 FROM links_Links INNER JOIN
41 links_Categories ON links_Categories.cat_id = links_Links.cat_id INNER JOIN
42 links_SubCategories ON links_SubCategories.sub_id = links_Links.sub_id
43 WHERE links_Links.link_aproved = 1;SELECT * from @Links
44 WHERE RowNumber BETWEEN ' + CONVERT(nvarchar(10), @startRowIndex) + ' AND (' + CONVERT(nvarchar(10), @startRowIndex) + ' + ' + CONVERT(nvarchar(10), @maximumRows) + ') - 1'
45
46
47
48 EXEC sp_executesql @sql
49
50
51 RETURN at row 39, i define a field by dividing to values. I use these for ratings (finding the mean). The problem is, when a new link is submited, it has no ratings, so it performs a divide by zero. how do I check if the column "link_ratingscount" is zero? if it is, then return a zero, and if it is not zero, then do the divide?
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Mar 25, 2003
Hi,
I have 2 jobs schedule to run after every alternate hour. Job A runs at 1 am, 3 am, 5 am etc. and job B runs at 2 am, 4 am , 6 am.
If job A is still running I would like Job B not to start at the scheduled time. How can I achieve this?
Thanks in Advance .... j
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Jan 21, 2007
I am building my first ASP.Net app from scratch and while working on the DAL I came across the problem of SQL Injection. I searched on the web and read different articles but I am still unsure about the answer. My question is should I add
db.AddInParameter(dbCommand, "AvatarImageID", DbType.Int32, avatarImageID);
Add in Parameters to my C# code to avoid SQL Injection. What is the best practice. I am unclear if the stored procedure already helps me avoid SQl Injection or if I need the add in parameters in the C# methods to make it work. I need some help. Thanks, Newbie
My C# update method in the DAL (still working on the code)
private static bool Update(AvatarImageInfo avatarImage)
{
//Invoke a SQL command and return true if the update was successful.
db.ExecuteNonQuery("syl_AvatarImageUpdate",
avatarImage.AvatarImageID,
avatarImage.DateAdded,
avatarImage.ImageName,
avatarImage.ImagePath,
avatarImage.IsApproved);
return true;
}
I am using stored procedures to access the data in the database.
My update stored proc
set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
GO
ALTER PROCEDURE [dbo].[syl_AvatarImageUpdate]
@AvatarImageIDint,
@DateAddeddatetime,
@ImageNamenvarchar(64),
@ImagePathnvarchar(64),
@IsApprovedbit
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;
BEGIN TRY
UPDATE[syl_AvatarImages]
SET
[DateAdded]= @DateAdded,
[ImageName]= @ImageName,
[ImagePath]= @ImagePath,
[IsApproved]= @IsApproved
WHERE[AvatarImageID] = @AvatarImageID
RETURN
END TRY
BEGIN CATCH
--Execute LogError SP
EXECUTE [dbo].[syl_LogError];
--Being in a Catch Block indicates failure.
--Force RETURN to -1 for consistency (other return values are generated, such as -6).
RETURN -1
END CATCH
END
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