Simultaneous Task Limit.
Mar 22, 1999Is there a limit to the # of tasks ( Dumps) to a HD device ,which SQL 6.5 can perform simultaneously?
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Sql Statement Limit In Execute SQL Task
Oct 15, 2007i have two machines. i was working in a "Execute SQL Task" object's SQL window on a rather long sql task on one machine and reached some kind of limit on the length of the sql statements. i can not add another line of code. i cut and pasted this same code into the exact same "Execute SQL Task" object's SQL window on the second machine and it does not have this limit. does anyone know what causes this? (in fact....i could paste it in twice - doubling the length)
Send Mail Task Error - Limit To Number Of Chars In To Line?
Mar 22, 2006Hello everyone,
I'm having an issue with dynamically setting the Send Mail task's to field to decent sized recipient list(approx 15 email addys). The strange thing is that this same package works fine if I'm using a list of say 4 email addys. I have double checked everything I can think of....list is seperated by semicolons, each address looks good....and have ran script tasks to check my variables along the path of the package but so far have not found the reason. The error I get is below:
"The specified string is not in the form required for an e-mail address"
Also of note, these addresses are being populated from a table, that is then setting the To string of the send mail task via a seperate variable...that variable being populated from a foreach loop. Again, all of this works fine with a smaller recipient list. Any ideas?
The only thing I can think of right now is to run the send mail task within the foreach loop...but then I'll be sending a seperate email for each address and would like to avoid that if possible.
Thanks,
Adrian
Built In Limit Or Setting That Limits The Number Of Rows From An OLE DB Source Table In A Data Flow Task?
Feb 16, 2007I have a table that I'm loading as part of a control flow that in turn is copied to a target table by using a data flow task. I am doing this because a different set of fields may be used from the source entry to create the target entry based on a field in the source table. That same field may indicate that multiple entries need to be created in the target table from one source table entry for which I use a multi-cast transformation.
The problem I'm having is that no matter how many entries there are in the source table, the OLE DB Source during execution only shows 7,532 entries being taken from the source table. If there are less than 7,532 entries in the source table, everything processes fine. More than 7,532 and the data flow task only takes 7,532 and then seems to hang. It also seems as though only one path of the multi-cast transformation is taken when the conditional split directs a source entry down that path.
Seems like a strange problem I know, but any insight anyone could provide is appreciated. Thanks.
Simultaneous Snapshots?
May 2, 2006If multiple snapshots for the same report attempt to generate at the same second, is there something in place to prevent them from conflicting with each other?
Our SSRS 2005 application will use a console app that we are writing to change the default parameters on each report and call the CreateReportHistorySnapshot method. This application will be multi-threaded, so there is a possibility that multiple versions of the same report with different parameters will attempt to run at the same time. We need to be sure that these snapshots will not conflict and return the appropriate SnapshotHistoryID for that report run.
From looking at the History table in the ReportServer database it looks like there are uniqueIDs and other keys that would prevent duplicates, but what if the requests come in at the same time? Is SSRS 2005 smart enough to delay for a second so that there is not a duplicate? Since the way you reference these snapshots in your URL is with the Snapshot Time in UTC format, that only goes out to full seconds (2006-05-02T00:00:00).
Sorry for the length, but I could not think of how to condense this.
Thanks,
Steve
Simultaneous DB Access
Mar 12, 2006I have C# Express and the SQL Express Management Studio CTP installed. So far, I've been forced to disconnect from the server in one app to connect to it in the other. I understand there is something around a 4 connection limit in SQLServer Express, so I don't see the problem.
During one of these episodes, SQL Mgmt Studio hung while opening DB properties, then the SQLServer service couldn't be stopped. Now the DB can't be opened even after a reboot.
Help?
Simulate 1,000 Simultaneous Users
Mar 29, 2000How can I simulate 1,000 simultaneous users in my database?
View 3 Replies View RelatedHow Are Simultaneous Queries Handled?
Oct 22, 2007Hi,
I have an application resource that is accessible from multiple clients applications that all have access to a common SQL Server db. By this, I mean, multiple clients can potentially connect to this resource at any given time. I want to limit the usage of this resource to one client at a time and was thinking about simply using SQL to maintain the name of the client that currently has "control" of the resource.
My question pertains to the case where two clients are executing a SQL query, simultaneously, to check whether someone has control of the resource or not. If two users were to simultaneously execute this query, do i have to lock the table in order to ensure that both users are not viewing data in an incorrect state? Or, does SQL Server ultimately execute the queries in a specific order? Meaning, the requests are simultaneous from a human standpoint but one request may have actually come in a millisecond before the other one and SQL server executes that query first, and then the second query. Is this how it works?
Thanks,
Paul
Maximum Simultaneous Connections
Feb 14, 2008Hi 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.
SSIS Simultaneous Connections
Jul 11, 2006Using the Import/Export Wizard, it is easy to set up SSIS jobs to import multiple tables in one task. However, SSIS appears to grab a connection to the source database and the destination database for each table indicated in the task sometime prior to doing the actual data transfer. Even though the transfer seems to be done a few tables at a time, all the connections are held throughout the execution of the task.
This has two effects:
1. The task may fail if the number of connections exceeds the limit of user connections set for the database
2. There is a severe impact on the other users of the databases (in my case, the source is a production system)
Is there any way to control the number of simultaneous connections that SSIS data transfer packages initiate?
I can, of course, define the package to have a small number of tables (thus limiting the connections), but in real life I need to transfer almost 700 tables, so limiting the number of tables per task to 20 or 25 produces an awkwardly large, and error prone, number of tasks. And since this definition must be done for multiple (not quite identical) databases, the extra effort of defining small collections of tables is signifcant.
SQL Express And Simultaneous Users
Aug 14, 2007Greetings!
Are there any limit of simultaneous users and/or connections when running SQL Express? The free license of SQL Express, does that include use by any number of users/devices?
Regards
Harald Hedlund
Simultaneous Entry In Both Master & Detail
Apr 7, 2008Hi, can anyone help me? I want to know whether is it possible to insert records simultaneously in both master & detail tables?
For elaboration, say there is a master table contains (orderid,orderdate,amount) and details table contains (orderid, productid,qty,price). 1 record of master table associated with n records of details table. Can it be possible to insert both the 1 record at master table with n records in details table in a single sql statement?
Simultaneous Updations And Deletions Between Databases
Jul 20, 2005hello to all,there are two databases named A and B.One database contains employee id as primaryI have another project database which includes that employee id asforeign key. How can I reflect my updations,deletionsthank you in advance,vishnu
View 2 Replies View RelatedExecuting Multiple Simultaneous Reports
Oct 15, 2007Is there a way to get the Report Manager to allow a single user to
execute more than 1 report at a time? Currently, each user can only
have a single report being executed at a time. It looks like any
other reports are being queued and executed serially.
Prevent Simultaneous Package Executions
Oct 23, 2007How can I prevent a package, or a section of a package, from being run more than once simultaneously? The package makes use of a staging database table, and if two copies of this package are run at the same time, there will be a race condition and possible corruption of the data in the database table. I have also noticed that the SSIS logging gets messed up and starts overwriting itself if I have more than one of these packages run at the same time.
What I am thinking of should work the same way as a serializable transaction lock on a normal query, where one query has to wait if another query has a lock on the table. I don't want the package to throw an error, I want it to wait until the other one is done.
I have been trying to use transactions in a test SSIS package, but they are not quite doing what I want them to do. I put various SSIS steps in a sequence container and require a serializable transaction. I have also tried putting the transaction at the package level, but that is not preventing simultaneous package runs.
Is there a built-in way to do this that is easy to implement? Otherwise, what I could do is insert a flag into the database indicating that a package is running, then make sure to reset the flag on any error or on completion. It seems like this alternate method could be error-prone though.
I am using SP2.
Inserting Simultaneous Tables Using Stored Procedure
Feb 8, 2007I am trying to insert into two tables simultaneously from a formview. I read a few posts regarding this, and that is how I've gotten this far. But VWD 2005 won't let me save the following stored procedure. The error I get says “Incorrect syntax near ‘@WIP’. Must declare the scalar variable “@ECReason� and “@WIP�.� I'm probably doing something stupid, but hopefully someone else will be able to save me the days of frustration in finding it. Thanks, the tables and procedures are below.
I made up the two tables just for testing, they are:
tbltest
ECID – int (PK)
Number Of Simultaneous Users/connections On SQL Server
Mar 30, 2001Hi,
could somebody please let me know what is the maximum number of simultaneous users/connection per single SQL Server 7.0 box? Licenses are not the issue here, rather the number of physical connections supported before another server needs to be purchased.
Another variation of this question would be what's the highest number of databases that 7can be created on SQL 7.0 server and what is the highest number of physical connections supported per database? Again, licenses are not the issue. Thanks a lot in advance.
SQL Express, Operating Systems, Simultaneous Connections
Sep 28, 2007I was going over this article , and was intrigued by this statement "If SQL Server 2005 Express is running on Windows XP Home, it is limited to five simultaneous connections. If it is running on Windows 2000 or Windows XP Professional, it is limited to 10 simultaneous connections. However, these are limitations of the operating system and not of SQL Server 2005 Express."
What are simultaneous connections? Is this related to Max worker threads defined as 255 on other editions? How does underlying OS impose how many connections can be done to SQL server. And finally how many simultaneous connections can be done in Windows Server 2003?
Simultaneous Execution Of The Same SSIS Package From Code
Jul 26, 2007Hello
I am trying to call the same package with different starting parameters using asynchronous method calls.
My code is
namespace ReconHost
{
public partial class HostContainer : Form
{
public delegate void InvokePackageHandler(
Microsoft.SqlServer.Dts.Runtime.Application app,
int var
);
Microsoft.SqlServer.Dts.Runtime.Application app;
public HostContainer()
{
InitializeComponent();
for (int i = 0; i < 2; i++)
{
app = new Microsoft.SqlServer.Dts.Runtime.Application();
InvokePackageHandler asyncInvokePackageHandler = InvokePackage;
asyncInvokePackageHandler.BeginInvoke(app, i, null, null);
}
}
public void InvokePackage(Microsoft.SqlServer.Dts.Runtime.Application app, int var)
{
Package pkg = app.LoadPackage(@"c:GRSGRSGRSTest_Async.dtsx", null);
pkg.Variables["intVar"].Value = var;
pkg.Execute();
pkg = null;
}
}
}
If I set the for loop to loop just once, the package is executed fine. Any more than once and only one instance of the package is executed.
Does anyone know what I am doing wrong? I know it is possible to execute the two package instances simultaneously because you can use DTexecUI.exe on two clients to do this.
Thanks in advance
Tomo
User Login - How To Control Number Of Simultaneous Connections
Jul 30, 1998Hi 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
HELP: Strange Blocking Performance Problem With Simultaneous Queries
Dec 1, 2005Hello everyone, I am hoping someone can help me with this problem. Iwill say up front that I am not a SQL Server DBA, I am a developer. Ihave an application that sends about 25 simultaneous queries to a SQLServer 2000 Standard Edition SP4 running on Windows 2000 Server with2.5 GB of memory. About 11 of these queries are over views (all overthe same table) and these queries are all done from JDBC but I am notsure that matters. Anyway, initially I had no problem with thesequeries on the tables and the views with about 4 years of information(I don't know how many rows off hand). Then we changed the tables toreplicated tables from another server and that increased the amount ofdata to 15 years worth and also required a simple inner join on 2columns to another table for those views.Now here is the issue. After times of inactivity or other times duringthe day with enough time between my test query run I get what lookslike blocking behavior on the queries to the views (remember these allgo to the same tables). I run my 25 queries and the 11 view queriesall take about 120 seconds each to return (they all are withinmilliseconds of each other like they all sat there and then werereleased for processing at the same time). The rest of the queries arefine. Now if I turn around and immediately run the 25 queries again,they all come back in a few seconds which is the normal amount of time.Also, if I run a query on one of views first (just one) and then runthe 25 queries they all come back in a few seconds as well.This tells me that some caching must be involved since the times are sodifferent between identical queries but I would expect that one of thequeries would cache and thus take longer but the other 10 would befast, not all block for 2 minutes. What is more puzzling is that thisbehavior didn't occur before where now the only differences are:1) 3 times more data (but that shouldn't cause a difference from 3seconds to 120 and all tables have been through the index wizard with aSQL trace file to recommend indexes)2) There is now a join between 2 tables where there wasn't before3) The tables are replicated throughout the day.I would appreciate any insight into this problem as 120 seconds is waytoo long to wait. Thanks in Advance.Chris
View 1 Replies View RelatedHow Do I Scale A Database To Handle A Billion Simultaneous Users?
Mar 30, 2007Hi everyone. I hope that my question isn't too broad, but here it goes...
I am trying to figure out the best way to scale a SQL Server database so that it can handle a billion simultaneous users querying the same tables, and can easily scale to handle many billions of simultaneous users. The database must also have 999.99% availability. The number of licences and amount of hardware needed is not an issue.
Thanks in advance.
SQL Server Express, Simultaneous ,Multiple Application Access?
Jul 27, 2006Hi Everyone,
I have a software solution that consists of two separate applications that share a SQL Server Express database on a single computer. Everything is working great, except when both of the applications want to access the database at the same time. All I can find is information on configuring multi-user access in a distributed system. I'd appreciate any information on configuring multi-application access on a single computer.
Thanks,
Mike
Store Procedure LOCK. How To Solve The Problem Of Simultaneous Call?
Mar 20, 2007Hello, I have one store procedure that writes something data to one physical sql table 'MyTable' and on beginning I first call:DELETE FROM MyTableProcedure returns at the end data from 'MyTable' as on SELECT. PROBLEM:I started SQL Manager on my Laptop and on Computer near me and all pointed to same database (on Server) and I run that procedure simultaneously on Laptop and Computer at the same time (two hands on F5 button on these computers). Occasionally when clicking with both hands at the same time I got no records at the end of execution (on both computers), otherwise I got the results.WHAT I THINK IS PROBLEM:Somhow one SP start working and it did not come to the end and another computer called this SP and execute first command (DELETE FROM MyTable) and I got empty records at the end..WHAT I NEED:I need to prevent this situation to get empty records. All computers must get these records always. How I can use some sort of LOCKs to do this?Or to do that on C# application level using LOCK command? Thanks in advanceAleksandar
View 2 Replies View RelatedSend Mail Task Problem Using A Combination Of ForEach Loop, Recordset Destination, Execute SQL Task And Script Task
Jun 21, 2007OK. I give up and need help. Hopefully it's something minor ...
I have a dataflow which returns email addresses to a recordset.
I pass this recordset into a ForEachLoop configuring the enumerator as (Foreach ADO Enumerator). I also map the email address as a variable with index 0.
I then have a Execute SQL task which receives this email address as a varchar variable (parameter 0) which I then use in my SQL command to limit the rows returned. I have commented out the where clause and returned all rows regardless of email address to try to troubleshoot this problem. In either event, I then use a resultset to store the query result of type object and result name 0.
I then pass this resultset into a script variable to start parsing the sql rows returned as type object. ( I assume this is the correct way to do this from other prior posts ...).
The script appears to throw an exception at the following line. I assume it's because I'm either not passing in the values properly or the query doesn't return anything. However, I am certain the query works as it executes just fine at the command prompt.
Try
ds = CType(Dts.Variables("VP_EMAIL_RESULTS_RS").Value, DataSet)
My intent is to email the query results to each email address with the following type of data by passing the parsed data from the script to a send mail task. Email works fine and sends out messages but the content is empty. I pass the parsed data as string values to the messagesource and define the messagesourcetype as a variable in the mail task.
part number leadtime
x 5
y 9
....
Does anyone have any idea what I might be doing wrong?
thanks
John
Integration Services :: Stored Procedure In Execute Task Fails But Task Does Not Fail
Jul 1, 2015I'm using SSIS in Visual Studio 2012. My Execute SQL Task calls a Stored Procedure where I have a TRY-CATCH. Last week there was a problem and the CATCH was executed and logged an error to my error table, but for some reason the Execute SQL Task didn't fail. Is there a setting to make the Execute SQL Task fail when an SP encounters a failure?
View 3 Replies View RelatedError: The Task With The Name Data Flow Task And The Creation Name DTS.Pipeline.1 Is Not Registered For Use On This Computer
May 4, 2006
Hi,
I am trying to create a simple BI Application for SSIS. In Visual Studio 2005 I just get a Data Flow Task from the toolbar and add it to the project. When I double click it I get the following error:
The task with the name "Data Flow Task" and the creation name "DTS.Pipeline.1" is not registered for use on this computer.
Then when I try to delete it it gives this other error:
Cannot remove the specified item because it was not found in the specified Collection.
I am creating this application in an administrator account in this computer, so I doubt the problem is related to permissions. I am running SQL Server 2005 and Visual Studio 2005 in WinXP Tablet PC Edition.
Any suggestions why this is happening and how to fix it?
SSIS Task Transfer SQL Server Objects Task And Default Constraints On Tables
Feb 21, 2008
I am using the "Transfer SQL Server Objects Task" to copy some tables from database A to database B including data.
The tables, primary key constraints, Foreign key, data and all transfers nicely except for "DEFAULT CONSTRAINTS" on the tables.
I have failed to find any option in the "Transfer SQL Server Objects Task" task to explicitly say "copy default constraints". So I guess logically it should happen automatically but it doesn't. I hope it is not a bug :-)
Any option anyone knows will help.
Thanks.
Compare Performance (Execute SQL Task Insert And Data Flow Task)
Mar 12, 2008
I am using SQL 2005 SSIS. I am joining several large tables and then the move result into another table in the same database.
I would like know which method is faster:
Use Execute SQL Task to insert the result set to the target table
Use the Data Flow Task to insert the result set to the target table. (Use OLE DB source to execute SQL command and then use the SQL destination)
Could you tell me why then other is slower?
Thanks.
Execute SQL Task – Output Parameter On Stored Procedure Causes Task To Fail.
Dec 2, 2005I have a SQL Task that calls a stored procedure and returns an output parameter. The task fails with error "Value does not fall within the expected range." The Stored Procedure is defined as follows: Create Procedure [dbo].[TestOutputParms] @InParm INT , @OutParm INT OUTPUT as Set @OutParm = @InParm + 5 The task uses an OLEDB connection and has a source type of Direct Input. The SQL Statement is Exec TestOutputParms 7, ? output The parameter mapping is: Variable Name Direction Data Type Parameter Name User::OutParm Output LONG @OutParm
View 7 Replies View RelatedWriting Full Result Set From Execute SQL Task Into A File Using Script Task
Mar 28, 2007In the Control flow tab, I have an Execute SQL Task that outputs full Result set into a variable of an object type. Now how can I write the contents of the Full Result Set into a text file using Script Task. I also want to format the following way while I output into a file:
Column Name 1 : Column Value
Column Name 2: Column Value and so on
I tried writing the contents of the Object Variable into a file, but the file had an output of single word: System.__ComObject.
Code for Writing the Full Result Set into a Text File
Dim RSsqloutput as String = Dts.Variables("objVariable").Value.ToString
Dim strVal as String = "File completed on " & Now() & vbCrLf & "------------------------------------------------------" & vbCrLf
oLogFile.WriteAllText("C:MyFile.txt", strValue)
oLogFile.WriteAllText("C:MyFile.txt", rsSQLOutput)
I went through this link that explains how to write XML Result Set into a File, But this doesn't help as it writes in XML format.
Would you please give me a hint of code how I can go upon.
SSIS (Integration Services) Transfer SQL Server Objects Task: This Task Can Not Participate In A Transaction
Feb 1, 2007In short, does the €œTransfer SQL Server Objects Task€? support distributed transactions?
In trying to use a €œTransfer SQL Server Objects Task€? in a container using a transaction on the container. The task is set to support the transaction. It is setup to copy table data from several tables from a non-domain server (sql server 2000) to a domain-based server (sql server 2005). I get an error stating, €œThis task can not participate in a transaction€?.
I am wondering if it means exactly what it says €“ this task in SSIS can€™t participate at all. Or does it mean that it won€™t in this scenario for some reason. I attempted a simple copy of data from mssql 2005 to mssql 2005 (same server) and the task still failed). MSDTC appears to be running properly on my machine and such (I can do a simple distributed transaction across linked server to the 2000 server in Query Analyzer (QA)). Also, MSDTC appears to be working on both servers with distributed transaction query tests in QA.
Here€™s the error info€¦
SSIS package "Development BusinessContacts and Products Migration.dtsx" starting.
Information: 0x4001100A at Copy BusinessContacts Data: Starting distributed transaction for this container.
Error: 0xC002F319 at Copy BusinessContacts database table data 1, Transfer SQL Server Objects Task: This task can not participate in a transaction.
Task failed: Copy BusinessContacts database table data 1
Information: 0x4001100C at Copy BusinessContacts database table data 1: Aborting the current distributed transaction.
Information: 0x4001100C at Copy BusinessContacts Data: Aborting the current distributed transaction.
SSIS package "Development BusinessContacts and Products Migration.dtsx" finished: Failure.
The program '[4700] Development BusinessContacts and Products Migration.dtsx: DTS' has exited with code 0 (0x0).
How To Fetch The Recrods From MS Access And Using It In Script Task Using Control Flow Tools(Execute SQL Task)
Jun 14, 2006Hi
I have an application like fetching records from the DataBase(MS Access 2000) and results i have to use in Script Task. At present i have used the record fetching query,connection string in Script itself. I would like to use in Independently. Is there any Tools like (Control Flow Tools like Execute SQL Task) are there to fetch the result set from Acccess and can use the fetching results in Script Task....
Thanks & Regards
Deepu M.I