What Is Taking Up So Much Memory?
Apr 10, 2006
I have a custom .net application that uses SQL 2000 server. All users are compaining performance issues and white-outs while they are using the application. I am almost certain that it's the SQL server that is the curprit. All the other components involved in the application hardly has any CPU or memory usage when I check the performance in the task manager.
On SQL server, I see that the process sqlserver.exe is taking like 2.8GB of memory. Is there a way to find out which exact SQL query or process is taking so much of memory? I belive there may be a bad SQL process that is stuck and taking all the memory? Is there a way to find out?
Thanks
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Mar 28, 2006
I have created a SSIS package that reads 500 text files splits them into 4 raw files then reads them again and writes then to 4 database tables different Tables.
The reason form this is that my raw files have multiple types of records in them and it is only 1 Coolum. I split this out into the different types of records and load whole rows into the database.
ie input 1 txt file
<T6>
1:1000178
3:18148821-00
5:40204043
6:1
17:EX201036259NZ
25:0000304862
</T6>
<T1>
1:18148821-00
</T1>
<T5>
1:1511313
4:18126485-00
8:2006032510230300
17:EX201033399NZ
</T5>
<T6>
1:1511158
3:18084863-00
5:40617044
6:1
17:EX201033969NZ
25:0000302981
</T6>
End up begin rows in the T6 Table
1000178 18148821-00 40204043 1 EX201036259NZ 0000304862
1511158 18084863-00 40617044 1 EX201033969NZ 0000302981
T5 Table gets a new record
1511313 18126485-00 2006032510230300 EX201033399NZ
and T1 Table get a record
18148821-00
Anyway all this works find but I find that the DTExec process work fine until it has used up all the memory in the laptop in general it take 400megs to run this SSIS. I'm wondering am I missing something like don't run in a transaction. I know in the old DTS you could commit on each package and how do I turn all logging off eg what you see in the DOS box (can I do this?) would love some help on this and if anyone want a copy of this ssis package ie your trying to do the same then I'm more than happy to email it.
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May 2, 2007
Hi,
Situation: I have a web application that is running on a server. IT has told me that the application I developed is taking up enormous amount of ram. It seems that the amount of ram that is taken up, is slowly increasing. About 10 megs per hour (memory leak). Furthermore, he has informed me that the ram is taken up by the sql. My senior developer told me that I probably have sqlconnections open that are not closed. I have checked through the application and it seems they are all closed properly. But I may have missed some, as the application is pretty big.
Questions:
1. Is there an application or piece of code that can monitor how many sql connections I have open during runtime?
2. Could there be any other common causes to such a kind of memory leak.
Any help with this matter would be very much appreciated.
Thank you for your time.
Sincerely,
Jeff
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Feb 3, 2006
I am running SQL Server 2000 on a desktop PC. Just recently upgraded my PC to 2gig of ram from 1 gig, in part, to try and fix the problem below. Didn't work. Have SP3 installed but not SP4 at this point.
When I open up query analyzer and edit some code, regardless of whether I actually execute the code, SQL server eventually sucks up available and cached memory to the point that my system comes to an effective halt --takes forever to do anything either in SQL server or other applications. In the task manager PF Usage climbs to just over the 2gig memory limit.
I conceptually understand the dynamic memory operation of SQL server ... but why is it sucking up most available memory when nothing is executing?
Is there a way I can release/clear the memory? Ideally, code that coould be run under a stored procedure would best meet my needs. Right now, I am "fixing" by shutting down and then restarting SQL server.
Thanks,
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Nov 25, 2002
Hi,
We have 32 individual publications setup on SQL 2000 and have 32 distribution agent running against it. I think each distribution agent opens a process called distrib.exe in Windows task Mgr.
Problem I'm having is that these 32 distribution agents are taking up fair amount of memory 1/2 gig and each process seem to be ever increasing in memory usage so I suspect a memory leak?
Is there something I can do to fix this problem? I don't want to upgrade memory as we already have over 1 1/2 gigs on this machine and it would not be feasible if we have a memory leak.
thanks!
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Mar 14, 2014
We have run into an issue on a dedicated SSAS 2012 SP1 server where the allocated memory is not being utilized, causing some slowness in use, connections, and queries.
Total Memory on the server is 512, and after startup, the utilized memory gets up to a max of 60GB and stops there. Checking the Resource Monitor, msmdsrv.exe is only taking around 39GB overall. With the current properties, that should be at 330GB. Am I missing something in the settings or in configuration that should be changed?
Version: SQL Server 2012 SP1 Enterprise (11.0.3000)
OS: Windows Server 2012 Datacenter - Fully patched and up to date
Databases: 2 Tabular models
Server: 512GB RAM
Current memory configuration:
Hard Memory Limit - 0 (Default)
LowMemoryLimit - 65% (Default)
TotalMemoryLimit - 95% (Default is 80)
VertiPaqMemoryLimit - 60% (Default)
VertiPaqPaginingPolicy - 1 (Default)
MemoryHeapType - 2 (Default)
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Jul 13, 2015
I am looking to test this feature - and the "Transaction Performance Collector" has recommended me a table to port to In-Memory OLTP.
I have now tried the "Table Memory Optimization Advisor" tool.
After a couple of tweaks to the table design - the tool is now passing validation but the tool is not allowing to progress to the next step:
Could it be down to not having enough memory? But would this not show in the advisor?
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Sep 28, 2007
Hello. I have received the follwoing error upon an attempt to Browse the Cube. All other tabs are functional, including the Calculations tab. We are running Windows Server 2003 SP2 and SQL Server 2005 SP2. Any suggestions would be greatly appreciated!
**EDIT** - Have confirmed SP1 for VS2005 is installed both locally and on server, also.
Attempted to read or write protected memory. This is often an indication that other memory is corrupt. (Microsoft Visual Studio)
------------------------------
Program Location:
at Microsoft.Office.Interop.Owc11.PivotView.get_FieldSets()
at Microsoft.AnalysisServices.Controls.PivotTableFontAdjustor.TransformFonts(Font font)
at Microsoft.AnalysisServices.Browse.CubeBrowser.UpdatePivotTable(Boolean translate)
at Microsoft.AnalysisServices.Browse.CubeBrowser.UpdateAll(Boolean translate)
at Microsoft.AnalysisServices.Browse.CubeBrowser.InitialUpdate()
at Microsoft.AnalysisServices.Browse.CubeBrowser.SupportFunctionWhichCanFail(FunctionWhichCanFail function)
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Oct 11, 2007
I've been researching AWE to determine if we should enable this for our environment.
Currently we have a quad core box with 4 gb of RAM (VMware). OS: Windows 2003 std, SQL Server 2005 std. 3GB is not set but will be as soon as we can perform maintenance on the server.
I have read mixed feedback on AWE, either it works great or grinds you to a hault. I would assume that the grinding to a hault is due to not setting the min/max values correctly or not enabling the lock page in memory setting.
We only have one instance of SQL on the server and this box won't be used for anything else aside from hosting SQL services. We do plan on running SSRS off of this server as well.
1. Will running SSRS and enabling AWE cause me problems? Will I have to reduce the max setting by the SSRS memory usage or will it share and play nice?
2. How do I go about setting the Max value? Should it be less than the physical RAM in the box? Right now its set to the default of 214748364, even if I don't enable AWE should this default value be changed?
3. It seems that even at idle the SQL server holds a lot of memory and the page file grows. If I restart the process in the morning, memory usage in taskmon is at 600mb or so. By the end of the day, its up around 2gb. How can I track down whats causing this, should this even concern me?
4. The lock Page in memory setting worries me. Everything I've read on this seems to give a warning about serious OS and other program support degradation. In some cases to the point where they have to restore the settings on the server before they can bring it back up. What are your thoughts on this.
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Aug 28, 2015
I have a Windows sever 2012 with sql server 2012 enterprise. Ram size is 22GB. Sometimes SQL sever takes 95% memory.My question, How to reduce memory size without killing any process because it's production server.So there are many background process is running. And,Is there any guides to learn why Memory is raise d so high and how to reduce it.
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Mar 27, 2008
Hello, I understand that we should use SSMS -> Server Properties -> Memory to put a cap on the SQL server memory usage, therefore it gives some space memory for OS, this is based on the fact if the max memory is not specified, SQL will use whatever available memory and eventually crash the system.
My question is that when a server has SSIS and SSAS services installed along with the SQL service. Would the max memory setting covers the SSIS and SSAS memory usage, or the SSIS and SSAS has to shared the memory with OS?
Thanks,
fshguo.
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Dec 6, 2006
I am running Visual Studio 2005. I have an SSIS Package which is consuming a huge amount of memory. During the execution of the package the memory keeps increasing. Until finally i get an Out of Memory exception. I have run this package using dtexec, and in the BIDS. No difference. I do have some script components and have added some code to get the assemblies in the current appdomain. I do see that one particular assembly is increasing on every loop. VBAssembly every time it hits the script component is increasing by 6, and along with it the memory is climbing. What is this VBAssembly being used for is there an update to SQL Server Integration Services that I need?
Thanks! Aaron B.
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Aug 22, 2007
sql server 2000 is running on windows server 2003 ... 4gb of memory on server .... 2003 was allocated 2.3gb nd sql server was allocated (and using all of it) 1.6gb for total of approx 4gb based on idera monitor software ... all memory allocated betweeen the OS and sql server .... then 4 more gb of memory added for total now of 8g ... now idera monitor shows 1.7gb for OS and 1.0 gb for sql server ..... 'system' info shows 8gb memory with PAE ... so I assume that the full 8gb can now be addressed .... why are less resources being used now with more total memory .... especially sql server ..... i thought about specifying a minimum memmry for sql server but i amnot convinced that would even work since it seems that this 1gb limit is artificial .... it it used 1.6 gb before why would it not use at least that much now ??
thank you
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Oct 4, 2015
i want to create a lot of index for my database for performance.but i need find memory usage by indexes.
How to find memory usage by index in sql server?
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Jun 15, 2015
I've a database with a memory optimized filegroup on it. How can I remove it?I have removed the memory optimized table I had on it, but when I try to remove the filegroup I receive an error.
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Jul 17, 2006
Hi,
I am going to install SQL Server 2000 (then SQL 2K5) on a Win Server 2K3 with 8 GB of ram, but it will be 16 GB in the near future.
I would like to reserve a fixed memory (for momemt less than 3-4 GB) for SQL Server and the rest for application (virtualization).
Without AWE enabled, max memory for SQL Server 2K5 is 4GB as for SQL Server 2000?
How can I manage and optimize memory keeping in mind AWE. (any doc, website available?)
Thank
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Feb 10, 2015
So I started a new job recently and have noticed a few strange configurations. Typically I would never mess with min memory per query option and index create memory option configuration because i just haven't seen any need to. My typical thought is that if it isn't broke... They have been modified on every single server in my environment.
From Books Online:
• This option is an advanced option and should be changed only by an experienced database administrator or certified SQL Server technician.
• The index create memory option is self-configuring and usually works without requiring adjustment. However, if you experience difficulties creating indexes, consider increasing the value of this option from its run value.
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Mar 20, 2008
Hello frnds Can Anybody explai what does it mean by question itself and how to resole it ?
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Jul 20, 2005
I'm taking 70-228 this Saturday.Any advice from anyone who has taken it recently?Thanks in advance,Joe in Florida
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Jul 10, 2007
just as we export in db2 database
as db2move databasename export -u username -p password
how we will export in sql server
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Feb 13, 2008
Hello.
I have a query that takes 1,5second to execute, but only 150ms of CPU. The query is quite simple, just one where statement against a clustered index.
SQL Server Execution Times:
CPU time = 156 ms, elapsed time = 1595 ms.
SELECT column1, column3, column4, ..., column10 FROM table WHERE column2 IN (37, 41, 43, 45, 49, 53, 55) ORDER BY column3 DESC
|--Sort(TOP 1000, ORDER BY:([u].[LastActivityDate] DESC))
|--Clustered Index Seek(OBJECT:([MP].[dbo].[__searchtest].[cix___searchtest_] AS [u]), SEEK:([u].[searchparamid]=37 OR [u].[searchparamid]=41 OR [u].[searchparamid]=43 OR [u].[searchparamid]=45 OR [u].[searchparamid]=49 OR [u].[searchparamid]=53 OR [u].[searchparamid]=55 OR [u].[searchparamid]=59) ORDERED FORWARD)
I have tried to rewrite the query to an INNER JOIN instead.
|--Sort(TOP 1000, ORDER BY:([u].[LastActivityDate] DESC))
|--Nested Loops(Inner Join, OUTER REFERENCES:([spal].[number]))
|--Index Seek(OBJECT:([MP].[dbo].[__search_parameters_lookup].[IX___search_parameters_lookup] AS [spal]), SEEK:([spal].[hash]=-1726604993) ORDERED FORWARD)
|--Clustered Index Seek(OBJECT:([MP].[dbo].[__searchtest].[cix___searchtest_] AS [u]), SEEK:([u].[searchparamid]=[spal].[number]) ORDERED FORWARD)
but the query still takes 1,5 seconds.
It spends 59% (according to execution plan) of sorting. 14% for the index seek of the __search_parameters_lookup table and then 24% of a clustered index seek of the __searchtest table.
How come it only uses that small of CPU but it still takes 1,5 seconds? It seems to be reading from memory as well so it shouldnt be an IO-problem?
The index I have on the table is a clustered index on (column 2).
Any ideas of how I can improve this? I have tried with DTA, also with a non clustered index on column3.
If I remove some columns from the SELECT-list the query will execute alot faster:
SQL Server Execution Times:
CPU time = 32 ms, elapsed time = 32 ms.
Booth the CPU and the elapsed time goes down and now appears to be more normal.
So there seems to be a problem caused by data transfer.
I tried to do a remake and normalize the table and when I do that I get the query execute with a speed of 400ms CPU and 400ms total. And this is still the exact same result, so why does it only spend 400ms of "rendering" or fetching the data when the tables are normalized but 1500ms when its denormalized?
Any ideas?
I am running Microsoft SQL Server 2000 - 8.00.2039
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Feb 17, 2006
I'm performing an insert and I not only need to remove the << character, but also need to take one field and dump it into two fields. So in essence -
KAREL>>MONTES
needs to look like
Col1 Col2
Karel Montes
Thanks :)
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Jan 28, 2008
Hello.
I have a query that takes 1,5second to execute, but only 150ms of CPU. The query is quite simple, just one where statement against a clustered index.
SQL Server Execution Times:
CPU time = 156 ms, elapsed time = 1595 ms.
Code Snippet
SELECT column1, column3, column4, ..., column10 FROM table WHERE column2 IN (37, 41, 43, 45, 49, 53, 55) ORDER BY column3 DESC
Code Snippet
|--Sort(TOP 1000, ORDER BY:([u].[LastActivityDate] DESC))
|--Clustered Index Seek(OBJECT:([MP].[dbo].[__searchtest].[cix___searchtest_] AS [u]), SEEK:([u].[searchparamid]=37 OR [u].[searchparamid]=41 OR [u].[searchparamid]=43 OR [u].[searchparamid]=45 OR [u].[searchparamid]=49 OR [u].[searchparamid]=53 OR [u].[searchparamid]=55 OR [u].[searchparamid]=59) ORDERED FORWARD)
I have tried to rewrite the query to an INNER JOIN instead.
Code Snippet
|--Sort(TOP 1000, ORDER BY:([u].[LastActivityDate] DESC))
|--Nested Loops(Inner Join, OUTER REFERENCES:([spal].[number]))
|--Index Seek(OBJECT:([MP].[dbo].[__search_parameters_lookup].[IX___search_parameters_lookup] AS [spal]), SEEK:([spal].[hash]=-1726604993) ORDERED FORWARD)
|--Clustered Index Seek(OBJECT:([MP].[dbo].[__searchtest].[cix___searchtest_] AS [u]), SEEK:([u].[searchparamid]=[spal].[number]) ORDERED FORWARD)
but the query still takes 1,5 seconds.
It spends 59% (according to execution plan) of sorting. 14% for the index seek of the __search_parameters_lookup table and then 24% of a clustered index seek of the __searchtest table.
How come it only uses that small of CPU but it still takes 1,5 seconds? It seems to be reading from memory as well so it shouldnt be an IO-problem?
The index I have on the table is a clustered index on (column 2).
Any ideas of how I can improve this? I have tried with DTA, also with a non clustered index on column3.
If I remove some columns from the SELECT-list the query will execute alot faster:
SQL Server Execution Times:
CPU time = 32 ms, elapsed time = 32 ms.
Booth the CPU and the elapsed time goes down and now appears to be more normal.
So there seems to be a problem caused by data transfer.
I tried to do a remake and normalize the table and when I do that I get the query execute with a speed of 400ms CPU and 400ms total. And this is still the exact same result, so why does it only spend 400ms of "rendering" or fetching the data when the tables are normalized but 1500ms when its denormalized?
Any ideas?
I am running Microsoft SQL Server 2000 - 8.00.2039
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Aug 2, 2006
Hi
I did a load testing and found the following observations:
1. The Memory:Pages/sec was crossing the limit beyond 20.
2. The Target Server Memory was always greater than Total Server Memory
Seeing the above data it seems to be memory pressure. But I found that AvailableMemory was always above 200 MB. Also Buffer Cache HitRatio was close to 99.99. What could be the reason for the above behavior?
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Sep 18, 2006
HI allI want to take a back of my serverthere is 40 data base into my server and i have to take back of every database every day is there any way which can take back up of hole server at one time.regard
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Jul 2, 2007
I dont know what this is called in the technical world. But you know when you do a search on amazon or play.com and the search results contain the first sentance or so of the items describtion rather than the whole thing. How is this done? thanks si!
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Mar 1, 2006
I have the below query which returns thousands of records. can I optimize the returned result set faster without changing the structure of the database?
SELECT dbo.tblComponent.ComponentID, dbo.tblComponent.ComponentName, dbo.tblErrorLog.ShortErrorMessage, dbo.tblErrorLog.LongErrorMessage, dbo.tblErrorLog.LogDate, dbo.tblErrorLevel.Description,dbo.tblErrorLog.ErrorLogIDFROM dbo.tblErrorLevel INNER JOIN dbo.tblErrorLog ON dbo.tblErrorLevel.ErrorLevelID = dbo.tblErrorLog.ErrorLevelID INNER JOIN dbo.tblComponent ON dbo.tblErrorLog.ComponentID = dbo.tblComponent.ComponentID
Thanks.
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Jun 11, 2002
I have a VB application which uses SQL server as the database and uses Crystal reports for reporting.We are using a stored procedure to create a report and we pass ID from the vb side to run the stored procedure.
In boston the report shows up in 4 sec.But in california it takes 7 min.
We have a very good network(T3).Why it is taking more time in california ?.
Any ideas ?
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Sep 13, 2001
Hi,
I am running this query and it is taking over 3 minutes.
"select * from table1 where CONVERT(varchar(10),dated,5) = '13-09-01' "
Table1 has a column called dated which is datetime datatype.
Any suggestions how can i optimize this query?I tried Non-clustered index on Dated column and time came down to less than 3 but still more than 2min.
TIA.
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Aug 25, 2004
I have been dealing with an intermittent problem for several months that manifests itself on my computer as well as a customers computer. It is happening so often, upon booting the computer, that I just open and then minimize the Task Manager so that it will be in the Tool Tray and the bargraph will be visible.
From time to time the processor bargraph will "Max out" and when I open Task Manager and click on CPU in the Processes Tab, SQLServr.exe is using 99% of the CPU.
In Enterprise Manager I have set maximum Memory to 25% of the available system memory. I have tried this in both Fixed mode as well as Dynamic mode, no change.
I was told that there was a SQL Server version that was susceptible to a WORM that caused this. I have since upgraded to SQL ver. 8.0.194. I'm not sure of the version that I replaced, but I thought that the previous version was the one that was susceptible to the worm.
Has anyone fought this battle and if so can you offer any experience or advice?
Thanks very much for your help,
Doc
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Feb 2, 2006
hi i am taking date from user.
if i want to take only date or only time from user and save into database than what to do?
i am using MS SQL Server which takes datatype as 'datetime' which takes both date and time as value to store in database.
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Mar 17, 2008
Hi all,
2 weeks ago I deleted about 200GB of data from a 300GB+ database. It's a custom DB we want to use to test few things. We wanted a smaller size DB for our testing and since we didn't have any we grabbed a production backup, removed sensitive data and ran a large archiving script on it... Anyway so far so good but our data file was still the same size as before.
So we started a shrinkdatabase... it has been running for 2 weeks now! After about 1 week I interrupted the shrinkdatabase process and ran a
dbcc shrinkdatabase('DB', truncateonly)
just to see if the data file will get reduced a bit or not. It did get reduced by about 20GB. I assume that
dbcc shrinkdatabase('DB', 0)
has free up enough pages at the end of the data file so a truncateonly was able to free up some space... Anyway after this we started the
dbcc shrinkdatabase('DB', truncateonly)
again... still running...
The database was never shrank before and every index is highly fragmented... Is that why it's taking so long? Am I actually going to have to wait for another few weeks before that thing finishes??
Anyone has experience running shrink on large DBs?
thanks!
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May 14, 2008
I have following common table expression query which is taking like 15 hours to run. would someone suggest what can I do to speed this thing up..
; with
a as (select proj_id, proj_start_dt,proj_end_dt, case when charindex('.', Proj_ID) > 0 then left(Proj_ID, len(Proj_ID) - charindex('.', reverse(Proj_ID))) end as Parent_Proj_ID from ods32.dbo.Proj a), --add Parent_Proj_ID column
b as (select proj_id, proj_start_dt,proj_end_dt,Parent_Proj_ID from a where PROJ_START_DT is not null and PROJ_END_DT is not null --get all valid rows
union all
select a.Proj_Id, b.PROJ_START_DT, b.PROJ_END_DT, a.Parent_Proj_ID from b inner join a on b.Proj_Id = a.Parent_Proj_ID where a.PROJ_START_DT is null or a.PROJ_END_DT is null) --get all invalid children of valid rows and give them the dates of their parents
update a set PROJ_START_DT = b.PROJ_START_DT, PROJ_END_DT = b.PROJ_END_DT
from WPData a left outer join b on a.Proj_ID = b.Proj_ID -- join up and update
thanks
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