Maximum User Connections?
Jul 23, 2005
Newbie here.
I've got my database set up in SQL 2000, and have started an Access adp
for a front end. I have 10 licenses, and at the moment the only
accesses are the server through Remote Desktop and one person into the
ADP. I started getting ODBC timeout errors when running a complex
query, so I started poking around. In the logs there's messages saying
the maximum of 10 user connections has been reached, over and over
again. I'm not even certain that these problems are related, but it
doesn't look good.
Why are all 10 connections used when there's only the server and one
client? No one else has access to this server. And how can I stop the
ODBC timeout? That paticular complex query is the whole jsutification
for using SQL over Access, so I kind of need it to work. :)
Thanks in advance, maddman
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Jul 29, 1999
We have a production server that is configured to 100 user connections.
Without any reason, the maximum connections had been exceeded and users
can no longer access the sql. But if you sp_who , it displayed only
4 user connections. Since, I have an open connection before this error
happens, i was able to execute sp_who. This happened 4 times since we
installed the sql server. the version is 6.50.422 sp5a with hotfix.
To all gurus out there, can you give light into this problem?
Thanks in advance.
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Jul 27, 2001
Hi,
Environment:
I have a Sqlserver 6.5 production server used for web based applications
Compaq 5500 4 GIG RAM, 4 processor
Sql Memory config on that server is 1048576 (which is 2048 MB)
and the run value is 640000 (which is 1250 MB).
runvalue for user connections was 500
We have only 90 user connections may increase upto 100 depends on the connections. We don't have any overload on that server.
Error: I was seeing
"unable to connect maximum no. of 500 configured user connections are already connected" in the error log.
Action Taken:
I increased the user connections to 600
and rebooted the server. Immediately the same error I can see in the error log. But we have only 20 user connections at that time. I can able to connect.
Please advise me to get rid of this error.
Thanks,
Anu.
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Feb 14, 2008
Hi All,
I have a Windows 2003 Server. Planning to use SQL Server to act as the main Database Server which needs to cater to over 100's of simultaneous connections.
Can anyone share with me the default maximum simultaneous connections and the maximum allowed simultaneous connections for the following versions:
- MSDE
- 2000
- 2005 Express
- 2005
Hope I can get more professional advice from you guys.
Thanks.
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Apr 7, 2006
Hi,
Could somebody tell what is the maximum number of concurrent connections that are supported in sql server 2005 developer edition?
thanks
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Mar 23, 2001
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.
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Mar 4, 2015
I have a table called dbo.PhoneCalls with below columns
PhoneID |PhoneNumber| Callstarttime| CallEndtime|
1 |111-111-1111|2013-04-01 05:13:03.000|2013-04-01 05:13:03.000
1 |222-222-2222|2013-04-01 05:15:12.000|2013-04-01 05:16:52.000
2 |333-333-3333|2013-04-01 05:17:29.000|2013-04-01 05:24:08.000
2 |444-444-4444|2013-04-01 05:21:50.000|2013-04-01 05:22:31.000
2 |555-555-5555|2013-04-01 05:22:41.000|2013-04-01 05:23:11.000
2 |666-666-6666|2013-04-01 05:23:20.000|2013-04-01 05:23:46.000
..........
1. PhoneID is nothing but the participant in the call. PhoneID = 1 is twice from above. Which means 2 particpants (Same call )with 2 numbers with their callstarttime and callendtime. Similarly for PhoneID =2, there are 4 participants. And the list goes on for a day and then for a month.
2. For example a phone call P1 with 2 participants is going on for a particular day. We should not consider the same phone call having 2 participants involved. So that the concurrency would be 2. We have to ignore that here.
3. Only to be considered is other Phone calls for that day. Lets say P1 having call with 2 participants, P2 having some 4 participants which fall in the time period of P1. Then we should consider P1 and P2 the common period
4. In order to find number of concurrent calls happened for a day basing on callstarttime and callendtime. What would be the query?
5. Should consider the Timeperiod or the bucket with 1 hour as the period.
6. A Phone Call P1, Phone Call P2, should have matching (common) time ( keeping all the scenarios) is required for this query.
Result for Concurrent calls for a day should be like below. Should get all the concurrent connections happened for a particular day.
Date|TimePeriod/Bucket(hr part)|Concurrentconnections|
Jan-01-2015|01 to 02|3
Jan-01-2015|11 to 12|2
Jan-02-2015|04 to 05|5
Jan-02-2015|12 to 13|13
........
ii) So once the above is achieved.
Have to find the Maximum concurrent connections for day from the above.
For below Maximum Concurrent connections are '3'
Date|TimePeriod/Bucket(hr part)|Concurrentconnections|
Jan-01-2015|01 to 02|3
Jan-01-2015|11 to 12|2
Hence the Result for Maximum Concurrent Connections would be
Date|TimePeriod/Bucket(hr part)|MaxConcurrentconnections|
Jan-01-2015|01 to 02|3
Jan-02-2015|12 to 13|13
.............
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Jul 18, 2007
Hi
I've implemented an SQL-CLR stored procedure which makes an HTTP connection using the WebClient class to a server where the processing on the web server takes 10 seconds.
If I fire off a bunch of requests to the stored procedure, e.g. 80 in 1 second I noticed that SQL Server 2005 (Express Edition) only allows 2 concurrent network connections at a time.
I can confirm this by looking at the timing of the results when they come back, basically I get 2 results every 10 seconds and by doing a 'netstat -a' on the web server I notice that there are never more than 2 HTTP connections from the SQL Server at a time.
Is this some sort of sheduling policy in terms of the number of concurrent external network accesses allowed by CLR objects running in SQL Server? Or some side effect of the way the WebClient class blocks in terms of waiting for a network response?
I was expecting all 80 of the requests to block waiting on a network response almost immediately and then for all 80 of them to pretty much complete and return 10-11 seconds later.
[Microsoft.SqlServer.Server.SqlProcedure]
public static int CreditAuthorisation(string Name, decimal Amount)
{
WebClient client = new WebClient();
string result = client.DownloadString("http://someserver/Test.aspx");
return int.Parse(result);
}
Cheers
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Jul 23, 2005
I'll try and keep this brief so in a nutshell:I have large distributed java system running on a Windows 2003 server(4cpu 8Gb memory).Periodically the following exceptions occurs in the servers:java.net.SocketException: No buffer space available (maximumconnections reached?): recv failedI know for a fact we are not using too many TCPIP sockets or runningtoo many socket servers.I have googled this error and found very little to help me.What buffer space is this?What does recv failed mean?(Is it at all relevant that sql server is running on the same box?)Any advice appreciated.Thanks in advance.Dan
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Mar 18, 2008
I want to select the latest photos that were posted on my site from my photos table:id name usercode createdate1 holiday 5 1/1/20082 holiday2 5 1/1/20083 my car 5 1/1/20084 new home 7 1/1/20085 starry night 8 1/1/20086 me again 6 10/10/2007But in case one user has posted like 400 photos I dont want to show 400 photos of the same user as that would mess up latest photos. So I want to show the latest photos but always with a maximum of 3 for the same user...So in the above data example pictures with id 1,2,3,4,5 would be shownHow can I achieve this with SQL (and as always: without temp tables :))Thanks!
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Apr 5, 2001
Develpers complain that Sql server is slow
We running 4 databases about 400 MB each.(hotel reservations ...)
Buffer cache ( 99.8) but sometimes it goes down to (62.0)
memory configuration Dynamic
Do we really need more memory for 50 users or what should I check in the first place ?
Thanks
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Oct 27, 2000
We are using SQL Server 7.0. Can anyone tell me the difference between setting max connections to 150 versus setting it to 0 for unlimited. We have an application that was running slow with the 150 connections set. We changed it to 0 for unlimited and now the application flies.
Can anyone explain this? Does SQL Server do something different with these settings?
Thanks!
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Nov 27, 2000
I'm locked out of my SQL server because user connections are set at '5' and apparently there are already '5' users connected.
So.. I can't login as SA or anyone to change the option. We've rebooted, disconnected from the network, and still '5' users seem to be connected.
What could be causing this.. Or how can I override the connections without logging in.
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Mar 8, 2001
I'm running SQl Server 7.0 SP1.
Currently the number of simulteneous user connections is set to 0 (0=unlimited).
But one of remote users when trying to connect to the server is getting sql error message that "There are more then 10 users connected".
Should I change "user connections" server configuration?
Thank you
Lena
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Feb 9, 1999
Hi guys,
Help me please to clarify following situation.
My application has 20.000 users.
How many simultaneously user connections should I'll set?
Thanks,
Alona
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Jul 27, 1999
I am trying to shrink my tempdb using the following sql 6.5 commands:
sp_dboption 'tempdb', 'single user', true
dbcc shrinkdb(tempdb)
I get the following message: "Attempt to set 'tempdb' database to single user mode failed because the usage count is 3. Make sure that no other users are currently using this database and rerun CHECKPOINT."
When I do a 'sp_who active' it returns about 5 spids but they are things like Mirror Handler, Lazy Writer, Checkpoint Sleep, RA Manager, and Select. I am not able to 'kill' the spids. I get 'Only users processes are able to be killed.' How do I identifiy the 3 users that sql is saying are connected to the tempdb database? And how do I remove the 3 users?
Thanks in advance.
Kevin
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Aug 24, 1998
Hi all!
In SQL 6.5, if I increase my user connections, should I also increase the amount of RAM allocated to SQL?
Any help would be appreciated.
Thanks
Toni
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May 11, 1999
I need to know the number of client licences that i require for a SQL Server. I want to monitor the
Server for a period of a week or so to find out the max..no of user connections during that time
so that i can fix the no. of user connections parameter.
i have tried using the foll Perf monitor counters :
No of open user connections
Client Count
Max Client Count
Client Limit
and am still confused about the numbers.
Can anyone throw some light on the difference in these counters and which one do i go by for
calculating my licenses .
Thanks
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Mar 29, 2006
I am in the process of installing 7 remote desktop computers that are furnishing data to a SQL server. We will also have 40-50 Managers/Supervisors who will have access to the database for information retrieval. Are there any tools available that would allow me to monitor who is connected to the Server? My main interest in monitoring are the 7 desktops which are permanently connected to the database. Until we have some history, I would like to make certain that we can maintain a good connection between the desktops and the server
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Oct 16, 2001
How do I "KILL" all user connections in one go?
I need to perform a daily restore and have to manually kill multiple
user connections, its very time consuming. Is there an easier way?
Id be grateful if you can help me!
Many thanks,
Lauryn
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Nov 27, 2000
I'm locked out of my SQL server because user connections are set at '5' and apparently there are already '5' users connected.
So.. I can't login as SA or anyone to change the option. We've rebooted, disconnected from the network, and still '5' users seem to be connected.
What could be causing this.. Or how can I override the connections without logging in.
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Oct 19, 2000
Is there a way to kill all user connections to a database using T-SQL?
Thanks!
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Nov 29, 2000
To increase user connections in SQL 6.5 do I have to first increase the memory configuration numbers?
Current memory config is at 8192.
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Mar 1, 1999
Recently, my SQL Server has started getting:
"Unable to connect. The maxinum of '100' configured user connections are already connected. System Administrator can configure to a higher value with sp_configure."
The server has to be rebooted to recover.
What's odd is that this occurs during the weekend when only about 5-8 connections are used by various system processes. I can't tell yet what is sucking up the connections.
We use SQL 6.5 sp4 on NT4.0 sp3 for DEC Alpha. We are also using SQL Mail, Seagate Backup (with SQL drivers) and some cgis that talk to the database.
Any thoughts would be appreciated.
Darin Drewrey
DBA
Extensis Corp
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Apr 26, 1999
I did something stupid. I was having a problem with my application of trusted connections exceeding 15. I changed the user connections to 30 without uping the server memory configuration. Now I am out of memory and can't establish a connection with the server to up the memory configuration. I don't want to have to reinstall sql 6.5 and loose my existing data. I am on a Netfinity server with 512 megs of memory. Any suggestions? And of course our NT tape backup unit is not set up for sql backup.
Also does 30 connections and 128 megs of sql memory sound ok for a non dedicated server. About 25 users connecting to the database at any given time?
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Jun 6, 2001
We are having a problem with the maximum number of user connections to sql. Currently we have a max of 500 connections and we are unable to connect to sql because the max number has been exceeded. The sql logs are flooded with repeated error messages about the user conncetions being maxed out.
Anyone has an idea why this could be happening? Also, can it be fixed by rebooting the server?
Thanks
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Aug 9, 2000
I am using SQL 6.5 and I would like to know (using Isql/w)
the number of users connected to my server at any given time.
Thanks for your help in advance.
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Oct 28, 1999
Hello ,
I get this message in the error log file (ODS17809) for sqlserver 6.5 on windows NT 4.0
Although this parameter is set to 50 which is more than enought for our environment. When I look up in current activity, I see only 4 users connected.
IS there a way to find , why this message comes up and how many actula connections (alive or hanging) are with the Sql server.
Well, I can increase the number of connections, but that is not the solution , as I would like to track/debug where all the connections are being used up.
thanks in advance for your help/suggestions
Mitesh Shah
mshah@princetonsoftech.com
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Sep 12, 2015
I have some code I build 2 weeks ago which I’ve been running daily but it’s suddenly stopped working with the following error.
“The table "tbl_Intraday_Tmp" has been created, but its maximum row size exceeds the allowed maximum of 8060 bytes. INSERT or UPDATE to this table will fail if the resulting row exceeds the size limit” When I google this there seems to be a related to tables with vast numbers of columns.
My table tbl_Intraday_tmp is relatively small. It has 7 columns. 1 of varchar(5), 3 of decimal(9,3) and 2 of decimal(18,0). The bit I’m puzzled with is it was working and stopped.
I don’t recall changing anything but I wouldn’t rule that out. I ‘ve inspected the source files and I don’t believe they have changed either.
DECLARE
@FileName varchar(50),
@Path varchar(50),
@SqlCmd varchar(1000)
= '',
@ASXCode varchar(5),
@Offset decimal(18,0),
[code]....
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Apr 20, 2012
I am using MS SQL server 2008, and i have a table with 350 columns and when i m trying to create one more column its giving error with below message -
Warning: The table XXX has been created, but its maximum row size exceeds the allowed maximum of 8060 bytes.
INSERT or UPDATE to this table will fail if the resulting row exceeds the size limit.
how can i resolve this?
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Mar 17, 2008
I have been reading through the article pointed to by the link below on msdn and its documented that one functional limitation of user instances is "Only local connections are allowed." I didn't understand the technical details(meaning) of that limitation and hopefully some one might explain it to me so that i can understand it better.
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Mar 27, 2000
Hello:
I am working with an application unde mssql 6.5 ,sp4. We have a separate
database for reporting on a different box. Each night we load a backup into
the database from the production database.
I set up a stored procedure to kill all users connected to this reporting
database just before the load.
THe job looks like this under scheduled tasks as a cmdexec:
isql -U sa -P -d master -Q"exec killusersall_sp 7" -o
F:MSSQLatchjobs
evdb.log
This job died with the following message:
Process Exit Code 1. ...[-b On error batch abort] [-O use Old ISQL
behavior disables the following]<EOF> batch processingAuto console width
scalingWide messagesdefault errorlevel is -1 vs 1 [-? show syntax summary
(this screen)]
The killusersall is paramaterize sp that I pass the dbid of the database
for whom I want all users killed. I need to put the stored procedure in the
master because I egt the spid from sysprocesses.
I do not understand why the job died. Does it matter if I named the stored
procedure as sp_killusersall instead of killusersall_sp which I used.
Can any one advise me about how to get the job to run? Any assistance will
be greatly appreciated. Thanks you.
David Spaisman
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Jul 30, 1998
Hi everyone!
Is it possible to control the number of simultaneous connections one login id can have?
I`d like to avoid my users to share their login ids and passwords to help them enter data into the system.
Thanks,
Mauricio
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