Hi,
I have an application with a DAL that has an interface with SQL Server.
The application has 400 users that open the web forms.
My question is:
Is there a limit of the parallel connections that can be opened? Or the IIS is managing all the access to the DB? Should I worry about the performance Or it's normal behaviour for ASP.NET applications?
Thanks
If I deploy a database to the web using sql express 05 is there a limit to the number of connections that can be made on it? I have read posts stating that but cant find any documentation from MSFT that supports that idea. I just know that it has a limit of a db size to 4 gigs.
Thanks!
Hi,
I read that there's a "tecnical" limit of 32767 concurrent connections for SQL 2005 Express, and that SQL 2005 Express uses only 1GB of memory. So, what's the number of practical concurrent connections SQL 2005 Express can handle? Is it 200 ,300, 0r 400...? How much memory is consumed by every connection?
Thanks in Advance.
We have been running SQL Server 7 for the past 6 months, with no problems at all. All of a sudden, we have received the error message 17050, that the maximum limit for connections has been reached. We cannot now start Enterprise Manager or do anything. We have tried fiddling with licencing in control panel but to no avail. Does anyone have any idea why this has suddenly happened? Any tips would be great!
Cheers.
Does sql server limit max number of connections, or max connections open from a given source, or over a given time period?
View 3 Replies View RelatedIs there a limit to the number of connections that can be made to the SQLCLR? If so, what is that limit and is it adjustable?
Thanks!
How does one enable sql connections limits for user connections per new and existing databases? how to do it on whole server per database but not set a limit per user.Looks like this must be run on each databases but what if you have 100s of databases:
USE AdventureWorks2012 ;
GO
EXEC sp_configure 'show advanced options', 1;
GO
RECONFIGURE ;
GO
EXEC sp_configure 'user connections', 325 ;
GO
RECONFIGURE;
GO
Hi there,
Here we have got a
asp.net application that was developed when database was
sitting on SQL server 6.5. Now client has moved all of their databases
to SQL server 2000. When the database was on 6.5 the previous
development team has used oledb connections all over. As the databases
have been moved to SQL server 2000 now i am in process of changing the
database connection part. As part of the process i have a login
authorization code.
Private Function Authenticate(ByVal username As String, ByVal password As String, ByRef results As NorisSetupLib.AuthorizationResult) As Boolean
Dim conn As IDbConnection = GetConnection()
Try
Dim cmd As IDbCommand = conn.CreateCommand()
Dim sql As String = "EDSConfirmUpdate" '"EDSConfirmUpdate""PswdConfirmation"
'Dim cmd As SqlCommand = New SqlCommand("sql", conn)
cmd.CommandText = sql
cmd.CommandType = CommandType.StoredProcedure
NorisHelpers.DBHelpers.AddParam(cmd, "@logon", username)
NorisHelpers.DBHelpers.AddParam(cmd, "@password", password)
conn.Open()
'Get string for return values
Dim ReturnValue As String = cmd.ExecuteScalar.ToString
'Split string into array
Dim Values() As String = ReturnValue.Split(";~".ToCharArray)
'If the return code is CONTINUE, all is well. Otherwise, collect the
'reason why the result failed and let the user know
If Values(0) = "CONTINUE" Then
Return True
Else
results.Result = Values(0)
'Make sure there is a message being returned
If Values.Length > 1 Then
results.Message = Values(2)
End If
Return False
End If
Catch ex As Exception
Throw ex
Finally
If (Not conn Is Nothing AndAlso conn.State = ConnectionState.Open) Then
conn.Close()
End If
End Try
End Function
''' -----------------------------------------------------------------------------
''' <summary>
''' Getting the Connection from the config file
''' </summary>
''' <returns>A connection object</returns>
''' <remarks>
''' This is the same for all of the data classes.
''' Reads a specific
connection string from the web.config file for the service, creates a
connection object and returns it as an IDbConnection.
''' </remarks>
''' -----------------------------------------------------------------------------
Private Function GetConnection() As IDbConnection
'Dim conn As IDbConnection = New System.Data.OleDb.OleDbConnection
Dim conn As IDbConnection = New System.Data.SqlClient.SqlConnection
conn.ConnectionString = NorisHelpers.DBHelpers.GetConnectionString(NorisHelpers.DBHelpers.COMMON)
Return conn
End Function
in the above GetConnection() method i
have commented out the .net dataprovider for oledb and changed it to
.net dataprovider for SQLconnection. this function works fine. But in
the authenticate method above at the line
Dim ReturnValue As String = cmd.ExecuteScalar.ToString
for some reason its throwing the below error.
Run-time exception thrown : System.Data.SqlClient.SqlException - @password is not a parameter for procedure EDSConfirmUpdate.
If i comment out the
Dim conn As IDbConnection = New System.Data.SqlClient.SqlConnection
and uncomment the .net oledb provider,
Dim conn As IDbConnection = New System.Data.OleDb.OleDbConnection
then it works fine.
I also have changed the webconfig file as below.
<!--<add
key="Common" value='User ID=**secret**;pwd=**secret**;Data
Source="ESMALLDB2K";Initial Catalog=cj_common;Auto
Translate=True;Persist Security Info=False;Provider="SQLOLEDB.1";'
/>-->
<add key="Common" value='User ID=**secret**;pwd=**secret**;Data Source="ESMALLDB2K";Initial Catalog=cj_common;' />
Please help. Thanks in advance.
Just a quick question about connection management. My application willnever need more than 1 or 2 connections about at any given time. Also, I donot expect many users to be connected at any given time. For efficiency, Iwould like to keep connections alive throughout the lifetime of the objectsrequiring them, rather than opening a new connection, executing code andthen closing it again. What is the most efficient way of doing this?Should I perform the open/close or just one open when I create the objectand a close when I dispose of it?
View 1 Replies View RelatedHi there guys!
I was wondering if anyone know the number of rows you can import from an external source into MS SQL Server 2000 Developer Edition?
I have tried importing a whole table from another database with over a million records. But failed after 1.7 million row.
Any ideas?
Thank you!
When creating a database, SQL Server 6.5 seems to have a 2 gig limit. What I mean is that if the device chosen is over 2 gigs SQL Server displays the size of the device as anegative number. This prevents me from being able to expand the database when I need to. Can anyone tell me why this is so, and if there`s anyway around it??
View 1 Replies View Relatedwe all know
mysql: select * from table limit ?1, ?2
equals
sqlserver: SELECT TOP ?2 *
FROM table WHERE (IDENTITYCOL NOT IN
(SELECT TOP ?1 IDENTITYCOL
FROM table order by IDENTITYCOL))
order by IDENTITYCOL
but the below SQL in mysql,how to convert?I enmesh...........
select pageid,pagename,pageaddr,pageauditflag,pageartaudi tflag,startplaytime
from pageinfo where entryid= ?1 and startplaytime= ?2
limit ?3, ?4
thanks!
hi,I have a question.Maybe You know the equivalent to command LIMIT from MySQLI couldn`t find something like this in MS SQLPSI try to display 10 records begining form e.g. 4 sort by idsomething like: "SELECT * FROM table WHERE name=... LIMIT 4, 10 ORDER BY id"in MySQLthanx,Urban
View 2 Replies View RelatedHi There
I recently read up and found an msdn forum post that said the 4gb limit only applied to data files not log files.
However recently i had an error on a sql express database saying that the log file was full, the database log file was set to auto grow and there was plenty of space left.
So i am guessing the 4gb limit applies to any database file mdf or ldf, is this correct ?
Thanx
I have the fields in my table:
ID, Title, Description, Price, ImageData, Active
I only want it to be possible to have two records at any time with Active=Yes. Active is a Bit, Yes/No, field.
Any help is appreciated.
Chuck
hi,i have a union statement that works like a charm:SELECT
[Name],
[EventID] AS [ItemID],
[TourID],
[Date],
NULL AS [StartDate],
[Date] AS [SortDate],
[Type] FROM [Events]
WHERE
[TourID] IS NULL
AND
AccessLevel <= @AuthenticationLevel
UNION
SELECT
[Name],
[TourID] AS [ItemID],
[TourID],
NULL AS [Date],
[StartDate],
[StartDate] AS [SortDate],
'2' AS [Type]
FROM
[Tours]
WHERE
AccessLevel <= @AuthenticationLevel
ORDER BY
[SortDate] this statement selects all the records i want from both tables, and orders the entire new table by sort date.what i want to do is to add a limitation on the number of records. i have tried using both LIMIT and TOP commands, but i can't get it working. both of the below statements give me a syntax error saying "Incorrect syntax near the keyword 'ORDER'"first try:SELECT * FROM (<same_statement_as_above>) ORDER BY [SortDate] LIMIT 2second try:SELECT TOP 2 * FROM (<same_statement_as_above>) ORDER BY [SortDate]what am i doing wrong, and how do i achieve what i want?i am working with mssql server 2005 (express locally, and standard on my hosting service). thanks for your help!
hello everybody
I created user "MyUser " with rights
1. public for database "Orders"
2. select, update,delete, insert to table Orders.dbo.PersonalInfo
I have table Orders.dbo.PersonalInfoChangeLog
( it keeps information on any update on Orders.dbo.PersonalInfo including
HOST_NAME())
So I don't want anybody to see even structure of this table(Orders.dbo.PersonalInfo ).
if person loged as "Myuser" he can use
1. sp_help PersonalInfoChangeLog
2.Enterpise Manager to see properties of the table
How can limit rights to see structure without generating Application role ?
Thanks
SQL takes all CPU resource on some of the intensive
queries. Is any way to make sure there is something left for other tasks
to be processed? Let's say limit SQL to use no more than 80% of CPU.
Thanks
I was wondering if anyone out there can help me as to how to limit the query results to show only the authors who have written more than one book?
SELECT a.au_lname, au_fname, COUNT(t.title_id)
FROM pubs..authors a
INNER JOIN pubs..titleauthor t ON (a.au_id=t.au_id)
GROUP BY a.au_lname, au_fname
Regards,
someone suggested I use:
select top 20 * from t
where pkc not in (select top 10 pkc from t order by pkc) order by pkc
to simulate the limit function in mysql.
i want to replace the 10 in the inner select with a variable. When I do this:
select top 20 * from t
where pkc not in (select top @counter pkc from t order by pkc) order by pkc
it gives me in an error in sproc. Pls help!!
There is at present (as we accidently found) limitation of MSSQL to return per row maximally 8060 bytes. Message like this comes: "Cannot create a row of size 8279 which is greater than the allowable maximum of 8060".
My questions are :
- Is there any way how to pass it? If I split into more tables (as I have it now) and ask for result where these tables are connected over any ID the result is the same. If I use stored procedures it seems to be ok. Any other idea?
- Will be this ok in SQL server 2005?
hi everybody,
Beside top statement what is the best statement used to limit the display the data?
Thanks...
I have an application that uses a small SQL Server database.
What I need is to prevent the access of an amount of users to the database.
At the beginning I want to limit the access only for 2 users but I want to be able in the future to grant the access to more.
MySQL has a convenient syntax for paging data that looks like this:
SELECT * FROM MyTable LIMIT 10, 20
That would select 10 records, starting from record 20, so that it returns records 20 - 30. This is convenient way to page data, without returning anymore rows than than you need.
However, MS SQL doesn't appear to support that syntax. What is the equivalent sql code to select any N rows from an arbitrary starting point, without having to create a stored procedure?
Thanks in advance :)
Quick question, is there a record limit in MSSQL assuming that we don't use a identity key. I am going to be using a table to sava mail server logs. It will create about 5000 records a minute. Also are there any perfomrance issues once you reach a certain numberof records, assuiming i am indexing one of the columns.
View 4 Replies View RelatedI have a extremely large table and out of that I just need 2 records but based on some logic . For example
IF EMPLOYEE_ADDRESS <> NULL
set Employee_HAS_HOME to 1
ELSE
set Employee_HAS_HOME to 0
Here I can not use just first 1000 records as I am not sure If I will cover the second condition in first 1000 rows . Then I came up with solution like : -
select * from employee_table where employee_address <> NULL LIMIT 1
UNION
select * from employee_table where employee_address = NULL LIMIT 1
And this will give me 2 records which I can use for my testing . But unfortunately this is not working.
Hi,
I am working on building SSIS Packages which will need to extract records from OLTP Servers, and i am half way through building the package, i wanted to test if it is able to extract the records from a particular table on OLTP....basicall i want to test if the package built so far running good?....but the extraction part takes ages as there are millions of records in the OLTP ...i want to limit those records to say some thousands so that i can test it and work on cleaning part in the staging and later after all the chunks are working perfectly i want to set it completely to run for extracting all the millions of records.
Any suggestion would be appreciated.
thanks
ravi
Nothing much that i can do..!!
I am working on a report split into 2 Excel spreadsheets because it is roughtly 350 columns wide. I know this exceeds the MS Access column limit, but is there a way to build this in a single table in SQL Server? If not, does anyone have any ideas.
Thanks
I have a table tblclients where all my client information is. In my application, I can assign a client to a therapist which is simply inserting the client id (intclientId) into the table with the inttherapistId and the authorid was completed the transaction. because we want to know the history of the transfers, I have to have a separate table other wise I could have just crated a field in the client table for the therapist id.
Simply enough.
The problem is when I assign the client to a therapist more than once, on the client log (the screen that shows all my clients) the client appears twice- once for each therapist he has been assigned to. I only want the client to appear once- and show the name of the latest therapist he has been assigned to not all the therapist. The way I did the select was to do an left outer join on the tbltransfer based on the client id. Works but like I said it gives me the client twice, if I assign them to the therapist more than once. So here is my statement:
select c.strfirstname, c.strlastname, c.intlocationId from tblclients c left outer tbltransfer t on t.intclientId = c.intclientId
this works, but if I have more than one record for the same client in the tbltranfer (if I assign the client more than once) then the recordset that is returned contains two records- one for each therapist assigned and that my problem.
Any help would be appreciated.
I'm storing time series data in a table in SQL server 2000. The tablehas columns like: CodeEquity, PriceDate, LastPrice. To extract thelast price for a number of equities on COMMON DATES I have used thequery:select t.LastPrice,h1.LastPrice,h2.LastPrice,h3.LastPrice fromBlg_HistoricData t,Blg_HistoricData h1,Blg_HistoricDatah2,Blg_HistoricData h3where t.CodeEquity=114151 and h1.CodeEquity=112220 andt.PriceDate=h1.PriceDate and h2.CodeEquity=112580 andt.PriceDate=h2.PriceDate and h3.CodeEquity=112228 andt.PriceDate=h3.PriceDatethis works for about 20 self joined tables and then says syntax error.I'm wondering what sql limits it hits. Is it possible to do this inSQL for 300 tables?Thank you.
View 1 Replies View RelatedHi, guys!Some of my applications are sharing same SQL login/password to connectto a database called "MyDB" on server "MyServer" . The password isencrypted and stored in registry or some configuration file theapplications use. The applications use certain arithmetic to decryptthe password and then connect to MyDB.The problem is a few developers know the arithmetic. So virtuallythere is no security here.I am wondering whether I can do anything on the MyServer/MyDB to limitthe access to the database so that only connection from certainservers are allowed. Say I only want connection with this knowncredential to be established if it is from server "Mybox". Noconnections from any other servers will be allowed. So even thedevelopers know the login/password, they won't be able to do anythingif they do have the access to server "MyBox".(I know some of you would ask why I don't use application roles. Let'ssay it's due to "historical" reasons and it's not totally up to me tochange the way the developers use database.)Any idea? Triggers in Master? Not a good idea, isn't it?Thanks in advance,Gary
View 3 Replies View RelatedDoes anyone know if there is a way to limit certain users/logins to only use 1 CPU on a box with 4 processors? I need to somehow restrict CPU utilization for a user and I'm wondering if this can even be done in SQL Server 2005. Any help would be appreciated.
View 1 Replies View RelatedWe're very interested in having our application use SQL/e but we can't have the 4 gig limit. It makes sense to me that SQL/e simply should not be able to access a file over the network, and then you wouldn't have any reason to put a 4 gig limit on it.
At that point it becomes a very flexible alternative for remote users that need to have a large amount of data (i.e. documents, images etc.) with them.
We'd love to start building an abstraction layer so that we can support both SQL Server and SQL/e so that we can support network and remote users and not have the nightmare that is SQL Server Express installation. (care of the windows installer group's bugs...)
Thanks! Hoping for a favourable answer!