DB Engine :: How To Configure TempDB In Memory
Jul 9, 2015Is it available by default or it has to be Configured.
If yes then how to configure Tempdb in Memory for SQL 2012 SP2 CU1?
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Admins. How Do You Configure More Memory.
May 14, 2002I had a SQL server 7.0 with 1 gb of RAM.
I just added more memory and now I have 4 gb of RAM. How can I canfigure SQL to take advantage of this.
Configure Max Memory Option
May 23, 2002Hello all,
I have a Production server which has 2gb of memory. SQL server memory is set to configure dynamically.
The Server also has a third party application on it. The third party application was running poorly, and the software vendors recommended running the following sql on a job every hour:-
exec sp_configue 'max server memory(MB)',500
reconfigure
exec sp_configure 'max server memory(MB)'1400
reconfigure
The hourly job has the effect of flushing out sql server memory every hour and setting the max amount down to 500mb and back up to 1400mb. SQL server still manages memory dynamically, so within the hour before the next time the job runs, sql server could use more than 1400mb.
I' feel that this job will degrade sql server performance because it will empty the buffer cache and procedure cache. My approach would be to select the 'use a fixed memory' option and set it to 1400mb, and not use their recommendation.
Does anybody have experience of this, and perhaps explain the consequence of running the recommended job every hour.
Any advice would be great.
Pargat
DB Engine :: How To Recycle TempDB Without Rebooting It
May 21, 2013We have an App server where Microsoft reporting services (report Builder 2005) is hosted and the backend Database server which is used by the reporting services.
The clients create very complex reports (usually towards month end) and run against the database causing the tempdb grow expenentially, leading to perfromance degradation and worst case space issues.Our only solution is to reboot the server.
There should be many systems which sould be having similar scenarios like mine. How to handle the scenario.usually in my database tempdb should be below 15GB... but it had grown to 60GB in some instances.
DB Engine :: Server TempDB Set On RAM Disk
Oct 23, 2015I try to find some feedback regarding setting the TempDB files on a RAM disk.Specifically I am looking for "production results" that could show the difference/benefit of such an usage.The tests on physical server and VM I already made have shown a boost in overall SQL Server 2012 performance on SQL Server instances housing data for SharePoint 2013 and Dynamics AX 2012 R2.Graphic below show differences between 5 different configuration on the same physical server:
- Physical HD: Server with local HD
- Physical SANEX1PRD: Server with TempDB files stored on a low-end SAN
- Physical SAN1: Server with TempDB files stored on a high-end SAN (around 100000 IOps)
- Physical SAN1 Jumbo: same setup with Jumbo Frame activated on NIC and DB engine
- Physical RAMdrive: with TempDB files stored on a 16 GB soft RAM drive within OS memory
Results were really impressive for the DB engine housing Dynamics AX data. My colleagues from the SharePoint team told me it also boosted a bit overall SharePoint performances but they did not have any baseline comparison to show.If you have some feedback, results, links, whatever I am interested.Indeed before setting this to all our SQL Server 2012 instances I y rather collect some *real world* feedback.
DB Engine :: TempDB Full On New System
Sep 9, 2015Application is throwing errors.Is there anyway to fix this with out restarting the server on a newly migrated system?
View 9 Replies View RelatedDB Engine :: TempDB Size When Considering RCSI
Nov 17, 2015I am considering turning on RCSI to prevent blocking, how do I estimate the size of tempdb?
I am monitoring current tempdb usage of space for
UserObjectsUsageKB,
InternalObjectsKB,
VersionStoreKB,
FreeSpaceKB.
DB Engine :: One Query Using Up Whole TempDB (50GB)?
Aug 18, 2015I have a query that is using up the whole TempDB (50GB) and still failing because the disk runs out of space.
The script has SELECT FROM SELECT FROM SELECT etc. and in each select it also seems to have joins.
I can also see a few UNION and UNION ALLs.
Is this normal for one query to use up that much space?
If I wanted to make this better where would I start?
Maximum Amount Of Memory Used For TempDB
Sep 15, 1998I am trying to find a suitable size for TempDB in RAM .
Is it possible to find the instantaneous maximum usage of the TempDB in RAM?
In other words how can I find the maximum amount of memory used* by TempDB ?
bim@sifas.com.tr
mikiz@turk.net
DB Engine :: Cannot Remove One Last Data File From TempDB
May 19, 2015In tweaking performance of tempdb by adding add'l data files I want to reset back to defaults and remove all add'l files I've created. I was not able to do it for most as they were in use, but by starting the server in single-user mode with all other sql services shut off, and using sqlcmd I was able to use the ALTER DATABASE tempdb REMOVE FILE <tempdev#> to remove the files... except for one.
I have also tried using the command:
ALTER DATABASE tempdb MODIFY FILE (NAME = tempdev#, FILENAME = '<new location');
Restarted SQL server, and tried the ALTER DATABASE ... REMOVE FILE again but am always denied with the message that the file can't be removed b/c it's still in use.
I also tried to shrink it with EMPTYFILE but that also fails with the message that a page is a work table page and can't be removed.
I really need to get tempdb back to just one data file but am unable to find a way to remove this last data file.
DB Engine :: TempDB Reserved Space Not Being Released?
May 20, 2015In on of the server tempdb is not releasing the reserved space after completion of data loads,as of now 99% of free space available in data file,we tried to shrink the datafile ,and space has not been released.
View 7 Replies View RelatedDB Engine :: Update Statement Affect TempDB?
Aug 3, 2015Could a simple update statement on a user database ever caused space usage in tempdb? Assuming the update statement fires no triggers and not using any temp tables?
IE:
User DatabaseA
Update TableX
Set col1 = X
Reason I ask is tempdb filled up and the only thing I could see running at that time was the update statement.
DB Engine :: How To Identify If TempDB Contention On Page Is PFS / GAM Or SGAM
Jun 23, 2015 I have used Extented event to monitor the occurances of TempDB contention on Production server . I found there are several entried logged in in 30 mints .Now I am trying to determin if Tempdb contention on PFS, GAM or SGAM page then I will decide if I need to increase the number of TempDB data files on Production server . Currently , There are 8 TempDB Data files configured on its separate Disks .There are Page_IDs I found in the extented events for Tempdb files -
Page_ID =1 for PFS page
Page_ID = 2 for GAM page
Page_ID =3 for SGAM page
but I found the Below Page_IDs and I know there is a formula that you can use to identify if page is PFS,GAM or SGAM ? How should I use this formula and what should I look for to determine if page is PFS,GAM or SGAM ? Is there any threshold value for the duration of TempDB contention occured ?
DB Engine :: Transaction Log Space Usage On TempDB Ever Increasing
Jun 15, 2015today I've put in production a big database accessed by 200 concurrent users, this database has READ_COMMITTED_SNAPHOT set to ON.I know that RCSI set to ON is very aggressive on tempDB so I'm monitoring it.I've noticed that the Transaction log space usage (%) on TempDB is slowly but ever increasing, I mean in the last 24 hours I've started from a 99% space free, now we are 37% space free...is it normal? TempDB log is 35GB in size.
View 6 Replies View RelatedDB Engine :: How To Release TempDB Space After Data / Batch Loads
Apr 22, 2015I have scenario where I have process that loades data into SQL server 2012 database by doing some manipulation on data like sorting , aggregation, etc. Once this process is completed it's not free up the Tempdb space. If I restart the database, then it does.
is there any way (apart from shirking) to release space for Tempdb, like writing some post SQL queries to delete/ truncate the data and logs from temp db?
DB Engine :: 2012 EE SP2 / How To Auto-kill Sessions That Overuse TempDB
Jul 15, 2015We have SQL Server 2012 EE SP2 server that is getting hit by reports that time-to-time use up to 300GB of tempdb.
It's happening because our clients can use 'bad' parameters for some reports.
Is there a way to autokill sessions that overuse tempdb (for example, if a session uses more than 15Gb in tempdb)?
Killing can happen immediately or after regular check (5 min for example).
DB Engine :: Memory Grant To CHECKDB
May 16, 2015How to accurately track how much memory was granted to a DBCC checkdb during it's execution?
I'd like to do this without continuously querying dm_exec_query_memory_grants, if at all possible - but if that's the only option.
DB Engine :: How Server Memory Paging Out
Nov 23, 2015Is there any easy way to detect SQL Server memory is getting paged out? Any DMV query or tips to confirm it is paging out.
My SQL Server Version is: Microsoft SQL Server 2008 (SP3) - 10.0.5500.0 (X64)
DB Engine :: Min Memory Per Query Server
May 6, 2015Is there has any SQL query to check running out of "min memory per query SQL Server"(default value is 1024KB)?
View 2 Replies View RelatedDB Engine :: Set Maximum Server Memory By Using Scripts
Apr 28, 2015How to set maximum server memory by using sql scripts in sql server 2014?
View 5 Replies View RelatedDB Engine :: Physical Memory Is High Greater Than 96%
Sep 10, 2015We have Windows Server 2008R2 installed on VM Server.On that we have three SQL instances running. From few past months we are observing physical memory is going high. Earlier we observed it was at 86-88%, now it is 96-97%.We have 16RAM & 8 CPU cores on VM. what is the best and ideal configuration so that we can rectify the high physical memory issue.
View 13 Replies View RelatedDB Engine :: MAX And MIN Server Memory Settings For 2012?
Sep 8, 2015We have a new set up on VM to run an application running 24*7 (migrated from SQL server 2008R2) with below configs:
1. OS- Windows server 2012 Standard 64 bit hosted on Virtual Machine
2. Memory 16 GB and Cores =4 with 2.4GhZ processor
3. SQL server 2012 SP2 , 64 bit Standard edition.
4. Total size of databases as of now 15 GB with biggest being 5 GB.
How should i go around in setting the MAX and MIN server memory settings. I have this set up for many of SQL 2005 and 2008R2 servers, but for 2012 i heard that things has slightly changed.
How should i start analyzing and setting the right value of this MAX and MIN?
DB Engine :: Max Value Of Maxtransfersize And Buffercount Adjustment VS Physical Memory On Box
Aug 5, 2015Eager to know to set the Max Value of Maxtransfersize and Buffercount adjustment but also anxious to know Physical memory impact.URL...The max size that can be used is the (Buffer Pool’s To Physical Memory / 16). As returned from the GlobalMemoryStatusEx (ullTotalPhys ) API call. HereBob dorr saysBuffer Pool’s To Physical Memory/16 what it means? (ie. Buffer Pool/ Physical memory/16.0 or (Physical Memory - buffer pool)/16
View 9 Replies View RelatedDB Engine :: Adjust Instance Memory When Service Not Starting
Apr 23, 2015One server, a part of a 2 node always on cluster, had problems, I had to restart.
I'm getting this error for example now:
Error: 49910, Severity: 10, State: 1. (Params:). The error is printed in terse mode because there was error during formatting. Tracing, ETW, notifications etc are skipped.
+
SQL Server was unable to run a new system task, either because there is insufficient memory or the number of configured sessions exceeds the maximum allowed in the server. Verify that the server has adequate memory. Use sp_configure with option 'user connections' to check the maximum number of user connections allowed. Use sys.dm_exec_sessions to check the current number of sessions, including user processes.
Now, on the instance I have activated maximum servere memory, my question; Is it possible to adjust this setting without starting the service?
Some parameter for example?
The server itself have enough memory.
DB Engine :: Memory Table Not Cleared If Created Inside A While Loop
Oct 29, 2015If I create a memory table inside a while loop, I expect that every loop the memory table is (newly) created and thus empty.
But when I test this, I see that on the second, third, ... run the inserted data in the memory table is still present and not cleared.
This can be reproduces with the following code:
DECLARE @tbl TABLE
( [id] BIGINT )
DECLARE @tbl2 TABLE
( [value] BIGINT )
INSERT INTO @tbl
VALUES (1), (2)
[Code] ....
/*
Expectation: twice 11 and 12 in @tbl2
Actual result: three times 11 and 12
*/
SELECT *
FROM @tbl2
Is this a wrong assumption or is this a bug in SQL Server? (Tested on: SQL Server 2014 and 2008).
DB Engine :: Defining MAX And MIN Server Memory Settings On 2 Node Cluster
Sep 29, 2015On first Node A: The server has 16 GB of physical RAM.
On second Node B: The server has 10 GB of physical RAM.
Now, this being Active Active, Node A can be clustered on failure onto Node B..Now reporting server is configured under these two nodes, with defined MAX and MIN server memory of 12 as MAX and 0 is min IN GB.Now with this setting on SQL whenever the cluster moves, such config make OS goes low on node for 10 GB.I am only left with option of switching this MAX and MIN to a default setting or is there any other alternative such as script which can change this setting accordingly when cluster moves to respective server.
DB Engine :: Find Total Memory Allocated To Server And CPU Utilization
Apr 30, 2015I am searching for query to find total memory allocated to sqlserver, and how much being used utilized as well cpu utilization percentage .
View 10 Replies View RelatedDB Engine :: Reboot / Restart Service After Setting Max Server Memory
Apr 29, 2015After I have set the maximum sql server memory in sql server 2014 using sp_configure, do I need to reboot whole server or restart sql service?
View 4 Replies View RelatedDB Engine :: In-Memory OLTP Use With Existing Tables / Index / Procedures
Nov 10, 20151. I need to make use of in memory engine for my pr-existed develop procedures ,tables ,index. do I need and code changes for application and how to store tables /indexes in OLTP memory
Assume table index may have primary key index as well.
2. If table with one primary index and 2 foreign constraints, 3 non clusters indexed. which one able o load to memory area and how t do that.
3. In memory is lock free zone. usually locks will happpen in RDMS context . how this works without locks.
DB Engine :: Insufficient System Memory In Resource Pool Default To Run Query
Jul 7, 2015My Integrity job started failing recently with the following error. Msg 701, Level 17, State 123, Line 1 There is insufficient system memory in resource pool 'default' to run this query. Process Exit Code 1. The step failed.
select @@ version
Microsoft SQL Server 2008 R2 (SP2) - 10.50.4033.0 (X64)
Jul 9 2014 16:04:25
Copyright (c) Microsoft Corporation
Developer Edition (64-bit) on Windows NT 6.1 <X64> (Build 7601: Service Pack 1) (Hypervisor)
System is having 4GB RAM and SQL is using most of it. It has 2 processors.
DB Engine :: Disk Block Size For Memory-optimized Tables Filestream Data
May 7, 2015In SQL Server 2014, how big for the block size is better for performance? 64 KB? 4 KB?
For normal database files, best practise is 64 KB disk block size. Not sure if it is same for memory-optimized filegroup.
Tempdb Is Skipped. You Cannot Run A Query That Requires Tempdb
Jul 14, 2004Has anyone seen the SQL Server error:
"tempdb is skipped. You cannot run a query that requires tempdb"?
We're running a .Net web application with a SQL Server 2000 backend, and we get the error intermittently. Restarting the SQL Server service seems to fix it, as it causes tempdb to be rebuilt, but this isn't a long term solution. Any direction or hints would be greatly appreciated. Thanks!
- Mike
SQL In-Memory :: Table Memory Optimization Advisor Validation Passed But Cannot Migrate
Jul 13, 2015I 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?