Running Packages In Parallel And Isolated (like A Sepearte Instance)
Feb 2, 2007
I'm a bit confused about how ssis handles concurrent package runs
let's say I'm running this package and I 've got 3 variables set in it
VARA
VARB
VARC
and by default they are all set to 0
if I run
dtexec /File "C:ControlRoom.dtsx" /SET PackageVersion_Builder.Variables[VARA].Value;1
dtexec /File "C:ControlRoom.dtsx" /SET PackageVersion_Builder.Variables[VARB].Value;1
dtexec /File "C:ControlRoom.dtsx" /SET PackageVersion_Builder.Variables[VARC].Value;1
I'm expecting to run 3 isloated version of the package with in
first version
VARA=1
VARB=0
VARC=0
second version
VARA=0
VARB=1
VARC=0
third version
VARA=0
VARB=0
VARC=1
but it doesn't seem like doing that the maxconcurrent variable is set to 40 to be on the safe side.
when I run I get
first version
VARA=1
VARB=0
VARC=0
second version
VARA=1
VARB=1
VARC=0
third version
VARA=0
VARB=1
VARC=1
any ideas?
Thanks
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Mar 27, 2007
I have a system of SSIS packages in which several packages perform the same lookup on the same table. E.g., i have PackageA, PackageB and PackageC all doing a lookup on TableA. All of these packages are spawned by the same PackageD and run frequently. In some cases, there is an issue with concurrency on these lookups. I get the following exception :
"
The ProcessInput method on component "LKP Lookup SecurityID" (6658) failed with error code 0xC004702C. The identified component returned an error from the ProcessInput method. The error is specific to the component, but the error is fatal and will cause the Data Flow task to stop running.
"
The hex code of this exception corresponds to the following description : "DTS_E_BUFFERNOTLOCKED. This buffer is not locked and cannot be manipulated." That's as much as i could find on this.
My suspision is that the SSIS engine somehow figures that the lookup in these distinct packages is the same one and builds a shared version of the lookup table in memory. Then there is some sort of a multi-threading issue in accessing this shared memory which leads to the exception above.
Has anyone experienced this? Can someone shed some light on this?
Thanks a lot
-Alex
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Jan 11, 2008
Hi,
I have stumbled on a problem with running a large number of SSIS packages in parallel, using the €œdtexec€? command from inside an SQL Server job.
I€™ve described the environment, the goal and the problem below. Sorry if it€™s a bit too long, but I tried to be as clear as possible.
The environment:
Windows Server 2003 Enterprise x64 Edition, SQL Server 2005 32bit Enterprise Edition SP2.
The goal:
We have a large number of text files that we€™re loading into a staging area of a data warehouse (based on SQL Server 2k5, as said above).
We have one €œmain€? SSIS package that takes a list of files to load from an XML file, loops through that list and for each file in the list starts an SSIS package by using €œdtexec€? command. The command is started asynchronously by using system.diagnostics.process.start() method. This means that a large number of SSIS packages are started in parallel. These packages perform the actual loading (with BULK insert).
I have successfully run the loading process from the command prompt (using the dtexec command to start the main package) a number of times.
In order to move the loading to a production environment and schedule it, we have set up an SQL Server Agent job. We€™ve created a proxy user with the necessary rights (the same user that runs the job from command prompt), created an the SQL Agent job (there is one step of type €œcmdexec€? that runs the €œmain€? SSIS package with the €œdtexec€? command).
If the input XML file for the main package contains a small number of files (for example 10), the SQL Server Agent job works fine €“ the SSIS packages are started in parallel and they finish work successfully.
The problem:
When the number of the concurrently started SSIS packages gets too big, the packages start to fail. When a large number of SSIS package executions are already taking place, the new dtexec commands fail after 0 seconds of work with an empty error message.
Please bear in mind that the same loading still works perfectly from command prompt on the same server with the same user. It only fails when run from the SQL Agent Job.
I€™ve tried to understand the limit, when do the packages start to fail, and I believe that the threshold is 80 parallel executions (I understand that it might not be desirable to start so many SSIS packages at once, but I€™d like to do it despite this).
Additional information:
The dtexec utility provides an error message where the package variables are shown and the fact that the package ran 0 seconds, but the €œMessage€? is empty (€œMessage: €œ).
Turning the logging on in all the packages does not provide an error message either, just a lot of run-time information.
The try-catch block around the process.start() script in the main package€™s script task also does not reveal any errors.
I€™ve increased the €œmax worker threads€? number for the cmdexec subsystem in the msdb.dbo.syssubsystems table to a safely high number and restarted the SQL Server, but this had no effect either.
The request:
Can anyone give ideas what could be the cause of the problem?
If you have any ideas about how to further debug the problem, they are also very welcome.
Thanks in advance!
Eero Ringmäe
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May 13, 2008
I have several packages within secuence containers and into one main dtsx package with a checkpoint configuration and when I run it some succeed and some don´t. The problem is that when I rerun it checkpoint doesn´t seem to work ´cause some of the successful packages are rerun as well (and not skipped as it should be...) In other words, the process does not begin on the point of failure..
Seems to be that packages that finish after the failure point (and succeed) are not registered in the checkpoint file, then when I rerun the main package these succeeded packages are rerun too....
Any ideas??
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Jun 29, 2007
I have seen a number of posts regarding parallel development of SSIS packages and need some further information.
So far we have been developing SSIS packages along a single development stream and therefore have managed to avoid parallel development of our packages.
However, due to business pressures we will soon have multiple project streams running in parallel, and therefore multiple code branches, as part of that we will definitely need to redevelop the same SSIS packages in parallel. Judging from your post above and some testing we have done this is going to be a nightmare as we cannot merge the code. We can put in place processes to try and mitigate this but there are bound to be issues along the way.
Do you know whether this problem is going to be fixed? We are now using Team Foundation Server but presumably the merge algorythm used is same/similar to that of VSS and therefore very flaky?
However, not only are we having problems with the merging of the XML files, but we also use script tasks within the packages which are precompiled, as the DTSX files contain the binary objects associated with the script source code, if two developers change the same script task in isolated branches the binary is not recompiled as the merge software does not recognise this object.
Do you know whether these issues have been identified and are going to be fixed to be in line with the rest of Microsoft Configuration Managment principles of parallel development?
Many thanks.
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Oct 7, 2006
Hi,
I am facing some problem's while using the FOR loop container to execute 7-10 packages in parallel.
The main package has 7 FOR loop containers say F1-F7.
Each FOR loop container has 2 task's
T1==> exec child package C1
T2==> exec delay task Delay1.
The idea is to run child packages c1-c7 in parallel ...delay for some time and then run again since there are in the FOR loop container.
I am facing someproblems.
1. The execution of tasks T1-T7 is not guranteed. This means SSIS picks up any 6 tasks of T1-T7 randomly to start with. 6 is the max it processes whereas i have more than that. Can i change this setting???
2. Its not guranteed that if say Task t1 of FOR loop F1 is executed the subsequent task for Delay within tat For loop would be executed next. Typically wat happens is it starts with T1-T6 (T7 onhold) and then exec the delay for T1-T5 and passes control to T7 without going into the delay for T6.This is not the intended execution.
What i want is exec T1-t7 ..delay for the next exec and start again.
How do i do this.
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Jun 1, 2015
I come from other ETL tools (Oracle Warehouse Builder, BODI, BODS & DataStage) and i'm having trouble finding the best practice for scheduling a collection of packages to be processed parallel en retry those that fail. I created a staging project which contains all the packages (50) that extract data from 1 source system and grouped the packages into 2 sequence containers to make sure that the 'heavy' packages are started first and together in parallel.
I soon discovered that there is no standard option to have one child package retry on failure. Currently if 1 package fails the whole project is retried.
I explored checkpoints as a solution but that seems a dead end when running packages in parallel.
There seem to be 2 solutions for my issue:
(1) create a loop around every EPT with 3 variables (waittime, retry_counter & succes_flag)
(2) create an event handler to keep a list of ID's that failed and enable/disable EPT's based on that list (there's a lot more to it).
Option 1 seems like a lot of bloatware in what i expected to be standard functionality. I'm still investigating option 2.
How do others handle this kind of scheduling? Is it so different with SSIS that i'm approaching this incorrectly ?
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Oct 14, 2008
I'm pretty new to SSIS but I've managed to cobble together a number of individual packages to refresh SQL tables from a 3rd-party database.
Â
Now, what I'd like to do is have a single package that I can use to invoke each of the individual ones. Since it will run on a quad, I'd like to invoke them such they'll run in parallel.
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Apr 13, 1999
One of the developers here wants to run a PB script consisting of 11
inserts to 11 respective tables at the same time. This is on a development
box.
Currently, we are running on MSSQL 6.5 ,sp4. We have very general
parameters set, nothing special. We have max async io set to the default
The inserts run serially now. What I need to do is run them in parallel.
My questions are:
1) How do I do this -- run in parallel?
2) What parameters do I need to set?
3)What else would I need to do?
Any information you can provide will be greatly appeciated. Thanks.
David Spaisman
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Feb 19, 2008
Scenario
I have a package that is doing some file transformation (Text, XML, and Excel) job based on a variable value. This package is called by a Parent package, where I am calling this package parallel through a script Task. So there are three parallel script task and all variables are local to script task.
In Script Task I am assigning value to child package variable using following code.
packToLaunch = appLaunch.LoadPackage("SSISPackage.dtsx", Nothing)
For iVarCtr = 0 To Dts.Variables.Count - 1
VarName = Dts.Variables(iVarCtr).Name
packToLaunch.Variables(VarName).Value = Dts.Variables(VarName).Value
Next
Dts.TaskResult = packToLaunch.Execute()
Problem1
Out of three packages some are getting failed saying variables not found in collection.
To read a variable in child package I am setting it to ReadOnlyVariables List of Script Task.
In some places I am using following code
object objValue = null;
Microsoft.SqlServer.Dts.Runtime.Variables variables = null;
if (varDispenser.Contains(variableName))
{
varDispenser.LockOneForRead(variableName, ref variables);
objValue = variables[variableName].Value;
if (variables.Locked) variables.Unlock();
}
return objValue;
Problem2
I have created a hash table in child package and stored in a package variable through a script task.
When trying to access the variable through a custom task, in some of threads it€™s returning me System.Object not System.HashTable.
Both the problems are working fine on a single processor machine, it starts giving errors on multi processor 64 bit machine.
Need Urgent Help!!!!!
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Aug 23, 2006
Hi
I have a SQL Server 2000 instance running on a Windows Server 2003 box with 4 processors. SQL Server is configured to use all 4 processors, and use all available processors for parallelism.
I have created a simple DTS package which has 2 "execute external process" tasks with no precedence constraints between them. There are no connections required or defined for the two tasks (sequential
processing is forced on tasks sharing connections). The DTS package
properties have the "limit the number of tasks to execute in parallel"
set to 4.
However, despite the above configuration, the two steps are never executed in parallel, but always sequentially.
Does anyone have any ideas as to why these tasks are not being executed in parallel?
Any suggestions welcome.
Thanks.
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Feb 23, 2007
Hi all,
Does an UPDATE statment lock the entire table or just the rows that will be affected by the UPDATE?
I ask because -
Can I run UPDATE statements in parallel on the same table on the same column. The need for doing this is because the table is a large fact table. I plan to execute the same UPDATE statements on different time sections of the data to expedite the processing.
If the UPDATE statment lock the entire table then I cannot run an UPDATE in parallel. If the UPDATE statement just locks the rows that will be affected then maybe I can because rows affected will be different for each UPDATE.
Let me know.
Thanks,
Vivek
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Feb 13, 2006
In my application code I am trying to invoke multiple threads in which each thread is loading an instance of the same SSIS package and would initialize the package variables with different values and execute the different instances in parallel. In each thread - after the package execution has completed successfully - I read that instance's SSIS package variables to get result information from that Instance run.
When I load the same package in different thread using LoadFromSqlServer() method
- does the code create multiple instances of the SSIS package and load the distinct instances in each of the thread
- Will the Package Execution ID be different for the different instances?
- Are the package level variables instance safe?
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Oct 8, 2015
I try to find out how many jobs where run in parallel on my server in an interval of time. For example: between 1:00 AM and 2:00 AM there were MAX 66 jobs that run in parallel and MIN 4 jobs. I am not sure if I can find this info out from a system view or I need to play with sysjobhistory view.
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Nov 15, 2007
The box I am trying to connect to is running two instances of SQL Server.
There is a SQL Server 2005 instance which is the default. There is a SQL Server 2000 instance which is named 'SQLSERVER'.
I can connect to the SQL Server 2000 instance no problem:<add key="ConnectionString" value="server=MYPCSQLSERVER;database=mydatabase;user id=****;password=****" />
However, I am having trouble connecting to the Default SQL Server 2005 instance. I have tried:
<add key="ConnectionString" value="server=MYPC;database=mydatabase;user id=****;password=****" />
but it doesn't work. I have tried explicitly setting SQL Server 2005 to use port 1434 (as SQL Server 2000 is running on port 1433), and then used:
<add key="ConnectionString" value="server=MYPC,1434;database=mydatabase;user id=****;password=****" />
but this doesn't work either.
Am I mssing something here? Any help much appreciated
Thanks...
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Jun 28, 2004
Does anyone know of a way to check for an instance of a DTS package?
E.g. I have a package called 'Package1' that is currently running.
Someone else attempts to run the package and before they can i want to check if an instance of 'Package1' already exists, if it does then the package will not run.
possible or pipedream?
cheers
tom
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Oct 18, 2005
Hi, I'm building a portal for supervisors can view their agents errors. We have a team that have been using Access to import data and QC it. I want to get these records into SQL but at the same time, the agents need to import their own work. I've create a DTS package that will import the data into the SQL table from a folder the agents have access to. I tried to create the strored proc to be run from the ASP page however it's not working and I'm having a hard time figuring out why. Here is the procCREATE PROCEDURE DTS
AS
exec master..xp_cmdshell 'dtsrun /KEMTSQL02 /ADJUSTMENTS /E'GODoes anyone know what I'm doing wrong? Any help would be great. Thanks!
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Apr 4, 2007
on the server i am planning to run my packages at runtime using sql server agent...i remove the text files from exisiting location(for eg C to different location(D.when ever i receive a file at c:
I want my package to run.
How can i set this up in the sql server agent?????how will the sql server agent know that this package had received a file.
or is there anyway i can run my packages automatically other than sql server agent
please help
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Mar 29, 2007
Hi,
when call a sub-package from the parent package with the executeoutofprocess=true I have about 5-10 sec delay before sub-package starts running. ( this is a big delay for me as the sub_package is in a foreach loop)
the sub_package itself it's very simple and contains just one script task with a small script in in it.
even if this delay is for validation I still can't understand why it is taking 5-10 ses.
cheers
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Mar 31, 2006
Hi everybody,
I have to create a package that executes other packages I've already created... Every one of these packages run with the same Configuration File, but if I try to execute the main one, including the path of the file, I get errors from the other packages because they can't find it... How can I manage to pass this file and its content to the other packages??
Here a little explanation of te process:
Main Package needs configuration file X.dtsConfig, and calls: package1, which needs configuration file X.dtsConfig; package2, .......
I hope everything is clear...
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Jul 16, 2007
hi all!
i have two packages, one that adds data to a Fact Table (package1) and one that updates the dimension tables (package2). i want package1 to run all day, as it waits for incoming csv files and i want it to stop every night at 11pm and run package2, which updates dimension tables. then package2 should stop at say, 1am and package1 would run again. i tried setting the Daily Frequency schedule of package1 to occur every 24hours starting at 3pm and ending at 3:15pm, just to test if it will stop at 3:15pm, but it didnt. how can i create a job schedule that will perform the behavior? thanks a lot!
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Sep 20, 2006
Is there any way to check from SQL code if a specific SSIS stored package is running like a SQL system view or stored procedure? Management studio option works fine but not if you need to determine if a specific package already is running or not?
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Dec 21, 2006
I need to execute a long running package (it takes about 16 hours to finish) to load a data warehouse for the first time with all historical data. This package it's a master package and execute other packages; I log the start time and the finish time of the package in a table to manage future incremental loads.
I executed the package on sql server where it is saved, but after 8 hours it was running, a new package was started automatically. Then two more packages started .. each every two hours.
I set the MaxConcorrentExecutable = 4, this could affect this strange behavoir ?
Anyone could imagine wath happened ?
Thanks
Cosimo
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Nov 7, 2007
Before I decided to post this thread, I searched the forum and saw that I'm not the only one going crazy with running SSIS packages in a job agent.
My package has some warnings ('truncation may occur due to inserting data from data flow column 'xxx' with a length of 50 to a database column with a length of 20') but it runs correctly in VS (development).
If I run it from dtexecui, it runs correctly...
If I configure my job as a SQL Server Integration Services Package I get this error in History
Started: 3:24:12 PM Progress: 2007-11-07 15:24:13.19 Source: Package1 Validating: 0% complete End Progress Progress: 2007-11-07 15:24:13.19 Source: Load T_TITLE Validating: 2% complete End Progress Progress: 2007-11-07 15:24:13.20 Source: Load T_TITLE Validating: 4% complete End Progress Progress: 2007-11-07 15:24:13.20 Source: Load T_TITLE Validating: 6% complete End Progress Progress: 2007-11-07 15:24:13.22 Source: Load T_TITLE Validating: 8% complete End Progress Progress: 2007-11-07 15:24:13.23 Source: Load T_TITLE Validating: 10% complete End Progress Progress: 2007-11-07 15:24:13.23 Source: Load T_TITLE Vali... The package execution fa... The step failed.
If I change to Operating System (CmdExec) type this is my error output:
Started: 3:31:20 PM Progress: 2007-11-07 15:31:22.04 Source: Load T_TITLE Validating: 0% complete End Progress Progress: 2007-11-07 15:31:22.05 Source: Load T_TITLE Validating: 2% complete End Progress Progress: 2007-11-07 15:31:22.07 Source: Load T_TITLE Validating: 4% complete End Progress Progress: 2007-11-07 15:31:22.07 Source: Load T_TITLE Validating: 6% complete End Progress Progress: 2007-11-07 15:31:22.08 Source: Load T_TITLE Validating: 8% complete End Progress Progress: 2007-11-07 15:31:22.68 Source: Load T_TITLE Validating: 10% complete End Progress Progress: 2007-11-07 15:31:22.68 Source: Load T_TITLE Validating:... Process Exit Code 1. The step failed.
Is there a way to see a more meaningful output?
SSIS really frustrates me in the last couple of days...
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Jun 18, 2007
Hello,
I have a sql 2005 cluster. I recently moved a new server in place of an old server we had
Both the servers now have w2k3 sp2 sql 2005 sp1 both have 2000 dts designer package.
My problem is that i have a dts package that runs on sql01inst01 without any issues but the same package when i try to run it from sql02inst02 just hangs ... digging deeper i found that - when i try to parse a query / build query / try giving parameters in a Execute SQL task it says
"The selected connection does not provide sql support"
The connection it reference is a postgres connection looking up info from a udl file.
I am not sure what is missing.
Any help is appreciated as soon as possible...
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Apr 5, 2007
Hi All
I have a meaty job that currently runs as a set of sql scripts under sql agent and I'm transferring this job to run as a SSIS package. I have managed to set it up so that it runs as a sql job (cheers guys!), and I'm watching the job run now, maxing out the CPU usage as it tries to run 10 different tasks at the same time . great stuff!
However, I've been thinking about how to view the progress of this job/package (the job only has one step; "run SSIS package"). With the current job as single scripts, in SQL agent you can view which step of the job you are at.... is it possible to somehow view which package task you're at (ideally with nice shiny yellow green and red updates like in debugging), or do you have to output each step result into a log file?
Oh, and another question! If i have a checkpoint in a package, and the package falls over, when the job is rerun through SQL agent, will it start at the checkpoint, or run from the start?
Thanks!
michal
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Sep 5, 2006
When I run an SSIS package from the MSDB in SQL Server Management Studio it never shows up under 'Running Packages'.
I have confirmed that the package is indeed running.
I've also tried to check the packages running on the server programatically by using the GetRunningPackages() method. This too returns nothing when clearly packages are running.
Any ideas?
Malcolm Barclay
Disney Consumer Products UK
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Mar 19, 2007
I have created a master controller package which runs as follows
deletes all the log files -> deletes few flat files on different drives -> preprocess task(execute package task) -> c# executable (execute process tasks) -> postprocess tasks (execute package tasks)
i need a create a task just before the preprocess task with an user input asking whether he wants to run a particular batch file before proceeding to preprocess. if the user says yes it should run a batch file followed by preprocess tasks, c# and post process or else it should directly goto preprocess, c# and post process (neglecting batch file task)
can anyone help me how to do it.
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Apr 18, 2006
Hi there,
if I have some packages (.dtsx) that are depolyed to Server A and I have SQL Agent installed on Server B - if I run a run a package from SQL Agent, does it run on Server A or Server B?
Thanks in advance.
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Oct 9, 2007
Hi Techs,
I have created several DTS Packages those are working fine, tested and verified.
I need to run them by a single click, either by batchfile or some sort of command.
Thanks
Iqbal Ansari
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Dec 16, 2007
how to check how many instance are running in the db server
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Jan 11, 2006
Hi,
Has anyone monitored the execution of SSIS packages with MOM? Are there extreme benefits over just utilizing the built in execution and event logs, as well as the Windows Event Viewer?
What is the recommended way to monitor SSIS execution?
Thanks,
- Joel
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Jan 31, 2008
Hi
Just a brief question,
is there a way of displaying a success or not success message when running (testing) an SSIS package on SQL 2005 ?
Because i have to go through the steps to see if there was an error or not and for large SSIS packages this is a pain.
With DTS 2000 after it ran you got a message saying successfull or not, is there a way to activate this in SQL 2005 ?
I suppose i could just run the job ... but I prefer the other way as sometimes a job fail is a permissions problem, not a SQL/datapump task problem...
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