Will Buffer Pool Extensions Have Benefit If Already On SSDs?
Sep 24, 2015
I am reading about Buffer Pool Extensions, and how it stores data pages on media like an SSD, to speed up retrieval in future. Would this be useless if my mdf files are already on SSD media? At most, I envisage it meaning that instead of grabbing the data from the mdf, it would grab the data from the buffer pool extension drive, but if they are both on SSD's, I'm not sure of how much return I would see.
Has any user decided to use BPE when their data is already on SSD's, and have they noticed any improvement in these cases?
View 1 Replies
ADVERTISEMENT
Oct 9, 2015
Extending the buffer pool onto an SSD drive that is shared ? For instance, if we had a mirrored system drive(The C logical partition) on SSD's, can we use the remaining space on that mirrored partition to extend my SQL 2014 buffer pool ? I understand that in this scenario, there is some competition for the I/O throughput between SQL Server's extended buffer pool and the OS. We intend to have the pagefile on a different disk, other than this specific SSD.Â
View 11 Replies
View Related
Oct 8, 2015
extending the buffer pool onto an SSD drive that is shared ? For instance, if we had a mirrored system drive(The C logical partition) on SSD's, can we use the remaining space on that mirrored partition to extend my SQL 2014 buffer pool ? I understand that in this scenario, there is some competition for the I/O throughput between SQL Server's extended buffer pool and the OS. We intend to have the pagefile on a different disk, other than this specific SSD.
View 1 Replies
View Related
Jan 23, 2015
I am sure I have seen in the past in a monitoring tool that PLE drops off to 0 whenever we do a backup. I was doing some reading around this however and found something that said backups use a different portion of memory external to the buffer pool (minmax settings).
Is this correct and how can I tell how much memory will be required for a backup?
View 2 Replies
View Related
Apr 16, 2007
Hi, I'm trying to chase down some bottlenecks, and am currently tyring to figure out what's actually in our data buffer pool.
We've recently upgraded to SQL Server 2005 (sp2a); there's 4GB memory on the box (an active/passive cluster) with the /3GB switch set. I'm working on the learning curve for
sys.dm_os_buffer_descriptors and sys.allocation_units [and boy I sure wish SSMS's query windows wouldn't "copy" in HTML]. Based on BOL and some poking around, I've come up with the following query to list pages used within a given database:
SELECT
count(*) cached_pages_count
,isnull(obj.name, '<unidentified object>') TableName
,obj.index_id
,ind.name
from sys.dm_os_buffer_descriptors bd
left outer join (select
object_name(object_id) name
,object_id
,index_id
,allocation_unit_id
from sys.allocation_units au
inner join sys.partitions p
on au.container_id = p.partition_id -- 2005 compatible, but maybe not in future versions
) obj
on bd.allocation_unit_id = obj.allocation_unit_id
left outer join sys.indexes ind
on ind.object_id = obj.object_id
and ind.index_id = obj.index_id
where bd.database_id = db_id()
group by obj.name, obj.object_id, obj.index_id, ind.name
order by cached_pages_count desc
This would appear to list how many pages are sitting in our buffer pool for which objects for the currently selected database. The thing is, for our "main" database, the vast majority of pages fall in that "unidentified" bucket -- their allocation_unit_ids are not in sys.allocation_units (or tempdb, I checked there just in case).
My question is: what are these pages? Where is this data coming from? Might these somehow be related with our execution/query cache, which appears to be larger than our data cache?
As may be obvious, this is all new to me, and any help would be greatly appreciated!
t
View 1 Replies
View Related
Mar 15, 2006
Hello:
I tried to synchronize the SQL 2000 database with the SQL mobile server on PDA with SQL server management studio from SQL 2005. I got the error as €œThe buffer pool is too small or there are too many open cursors. HRESULT 0x80004005 (25101) €?. The SQL database file size is 120MB.
I create the .sdf file on PDA with the following C# code:
string connString = "Data Source='Test.sdf'; max database size = 400; max buffer size = 10000;";
SqlCeEngine engine = new SqlCeEngine(connString);
engine.CreateDatabase();
I think the 400MB max database size and 10000KB max buffer size are big enough to hold that SQL database data and I have already successfully synchronized my PDA with another smaller SQL server database file. I have been kept trying and searching this for couple of days and still can not figure it out.
Moreover, the synchronization always stops at the same table.
Please help and a lot of thanks in advance.
View 1 Replies
View Related
Oct 20, 2011
How do i check the size of the datacache allocated from the buffer pool by sql server?
DMV or anything to show me the pool allocation sizes for the various pools in sql server i think i may be able to work from there.
View 9 Replies
View Related
Feb 2, 2006
I am working with merge replication. The db server is running Windows 2003 Server Std x64 with SQL 2005 Std x64. The IIS server is running Windows 2003 Server Stx x86. The clients are Windows Mobile 5.0 running SQL 2005 Mobile.
I have previously been able to get the test client to initialize a subscription to the publication. I made some changes recently and added about 7 tables, bringing the total articles to 104. Some of the articles have unpublished columns, which means they are using vertical filtering as well. This publication is also using parameterized filters. During publication creation, there are several warnings that "Warning: column 'rowguid' already exists in the vertical partition".
The snapshot agent runs without any errors. When the client attempts to initialize, I get the error "The buffer pool is too small or there are too many open cursors."
My question is 2 part. First, what is causing this error, and second, how can it be resolved?
View 1 Replies
View Related
Feb 21, 2007
hi i'm having this error on my application"cannot allocate more connection.connect pool is at maximum increase max pool size" the proble is when i do testing this error does not apply it only Appears when the application is been used by many people
How can I resolve this?
Thanks
View 1 Replies
View Related
Feb 11, 2004
What does this error message imply?
View 3 Replies
View Related
Apr 18, 2012
I encountered the following error while attempting to preview an RDL report I was developing in VS2010 using SSDT:"The size necessary to buffer the XML content exceeded the buffer quota"
View 3 Replies
View Related
Oct 7, 2015
We have a set of reports with same header section in all the reports. So while developing a new report i used to copy that header section to the new report with same dataset names (without any change) , but while rendering the report it is throwing error " The size necessary to buffer the XML content exceeded the buffer quota".
View 2 Replies
View Related
Apr 28, 2006
Hi
I have a master package that executes a series of sub packages run from a SQL Agent job. One of those sub packages has been stable for a week, running at least once per day, but it just failed despite having been run once already today with the same set of input data.
There were a series of errors showing in the event log for the Execute Package Task starting with "Buffer Type 15 had a size of 0 bytes.", then "The buffer manager failed to create a new buffer type.", then "The Data Flow task cannot register a buffer type. The type had 32 columns and was for execution tree 3.", then "The layout failed validation." and finally "Error 0xC0012050 while loading package file "C:[Package].dtsx". Package failed validation from the ExecutePackage task. The package cannot run.".
SQLIS.com reports the constant for the error code as DTS_E_REMOTEPACKAGEVALIDATION ( http://wiki.sqlis.com/default.aspx/SQLISWiki/0xC0012050.html ).
I then ran the package on my dev machine in BIDS and it worked fine, so I re-ran the job on the server and this time that package executed ok, but another one fell over but did not put anything in the event log.
Does any one have any idea what happened?
TIA . . . Ed
View 2 Replies
View Related
Mar 6, 2008
Good day everyone,
I'm experiencing a completely random warning from any given row count component within any given data flow task. It occurs sporadically. Whilst distracting, I don't see any adverse effects to the data after the packages complete. Can someone weigh in on this warning and let me know if it is indeed benign or what I maybe able to do to fix it?
Here's the warning:
"A call to the ProcessInput method for input 75997 on component "CNT Rows sent for STG table" (75995) unexpectedly kept a reference to the buffer it was passed. The refcount on that buffer was 4 before the call, and 5 after the call returned."
Thanks,
Langston
View 4 Replies
View Related
Apr 11, 2007
Hi !
We're designing our data model, and have found that we have two groups of tables (about 10 tables in each group). The tables within each group are dependent, but the two groups are independent of eachother.
Now, our two choices are:
1. Put all tables into one database.
2. Put the two groups into two separate databases.
For simplicity, option 1 is the winner. However, my question is, will there be noticeable peformance benefits by using two databases? (In which case, option 2 will be the winner).
Thanks,
Martin
View 1 Replies
View Related
Jul 29, 2005
Just curious. The exec plan is the same for both qry's, and they both show the same estimated row counts @ the point of question in the exec plan. The exec times are roughly the same, any variances I'm attributing to db load from other things going on, since any benefits of one over the other are not consistent from execution to execution. So is there any benefit to filtering in the join conditions vs. the where clause? My thinking was that by filtering earlier in the qry (when joining) as opposed to "waiting" to do it in the where clause, the rest of the qry after the join would inherently be dealing w/a smaller result set for the rest of it's execution, thus improving performance. After the exec plan checking I did, I guess I was wrong. Seems that Sql Server is intelligent about such filtering when analyzing the entire qry, and building its execution accordingly. The execution plan for both qry's showed the same where clause argument for the tables being joined.
Filtering in where clause....
Code:
select...
FromtProject p with (noLock)
jointProjectCall pc with (noLock) on P.ID = pc.project_id
jointStore S with (noLock) on pc.store_id = s.id
jointZip Z with (noLock) on Z.zip5 = s.zip5
jointManager M on M.ID = case ... end
leftjoin
(
selectprojectCall_RecNum as RecNum, sum(answer) as HoursUsed
fromtCall C
whereAnswer > 0 and question_id in (1, 2)
group by projectCall_Recnum
) as C on pc.recnum = c.recnum
wherepc.removed = 0
andp.cancelled = 0
andp.deleted = 0
ands.closed = 0
ands.deleted = 0
andyear(getDate()) between year(P.startDate) and year(P.expDate)
Filtering in joins...
Code:
select...
FromtProject p with (noLock)
jointProjectCall pc with (noLock) on P.ID = pc.project_id
and pc.removed = 0
and p.cancelled = 0
and p.deleted = 0
and year(getDate()) between year(P.startDate) and year(P.expDate)
jointStore S with (noLock) on pc.store_id = s.id
jointZip Z with (noLock) on Z.zip5 = s.zip5
and s.closed = 0
and s.deleted = 0
jointManager M on M.ID = case ... end
leftjoin
(
selectprojectCall_RecNum as RecNum, sum(answer) as HoursUsed
fromtCall C
whereAnswer > 0 and question_id in (1, 2)
group by projectCall_Recnum
) as C on pc.recnum = c.recnum
View 1 Replies
View Related
Jul 5, 2006
Hi, all here, I am having a question about stored procedures for data mining. What are the main benefits of stored procedures for data mining? (what stored procedures can do for data mining on sql server 2005? when they are useful for data mining?).
Could please any expert here give me any guidance for that? Thanks a lot in advance.
With best regards,
Yours sincerely,
View 3 Replies
View Related
Mar 23, 2000
Hi all,
Quick question in setting up a 3-disk SQL 7.0 system - can anyone think of a benefit to segregating a single RAID 5 disk array into numerous logical partitions for separating out the OS, the database files and the transaction logs? I would assume performance would be unaffected (as the drives are acting as a single array for reads & writes anyway) so other than general organization what (if any) advantage would be gained over making a single large logical partition?
TIA
A
View 2 Replies
View Related
Jul 20, 2005
I am interested to hear if people think it would be a good idea to movethe Master & TempDB to a different HD.Here is my DB Server's set up:1. Processor: (1) AMD XP 28002. 1st HD (IDE 0) is the system & boot drive3. (3) SCSI HD make up a hardware RAID level 0 (striped withoutparity)solution - these striped drives are just for my working DBs4. (1) SCSI HD that's not doing anything.I want to put the Master & TempDB on the SCSI HD that's not doinganything. Would that be the best place for it for maximum performance orshould I put in the striped array. I am leaning more towards putting onthe SCSI HD that's not doing anything. What do you all think?Ed*** Sent via Developersdex http://www.developersdex.com ***Don't just participate in USENET...get rewarded for it!
View 1 Replies
View Related
Oct 2, 2007
We have an application where part of the database is used for searching products and is very processor intensive due to the number of permutations and calculation that are required. This section of the database is scaled out by using transactional replication so that the €œsearch€? load is removed from central database€™s daily operations.
Each €œsearch€? server can handle around 15,000 search an hour with SQL taking about 3 seconds to return the result in XML (the system has be optimised to squeeze out every last bit of performance). This is in a 32bit environment. One other point, which is probably relevant, is that the Search data only totals 500MB.
With the possibility of upgrading these severs in the near future would we see any performance benefits in going 64bit. I know we won€™t take advantage of increased memory access due to the size of the search data but is there any discernable performance advantage between 32bit v€™s 64 bit processors and SQL Server 2005 64Bit. Or should I stick with SQL Workgroups and 32bit processor and save on the Standard SQL licence?
Many thanks
View 5 Replies
View Related
Jun 8, 2006
Hi, this text is taken from the FAQ and contains the same link the Registration email I received, which don't work (for me!). The link points to http://go.microsoft.com/fwlink/?LinkId=52054. Does anyone else have this problem?
NOTE: You can directly access the Registration Benefit Portal without need of a first or second benefit e-mail€”as long as you have completed the registration process and use the same e-mail to login in to Passport at the benefit porta
View 1 Replies
View Related
Dec 19, 2007
When I look into our LOG directory for logs generated by our SSIS packages I notice that the logs do not always have the extension .LOG. When analyzing those packages I see no user changes on the LOG settings; all packages have default LOG settings.
How is this behaviour explained? And is there a way to make sure all packages have this .LOG extension? As it is now it looks unruly, messy.
TIA,
View 4 Replies
View Related
Apr 6, 2007
The scenario is as follows: I have a source with many rows. Each row has a column called max_qty_value. I need to perform a calculation using another column called qty. This calculation is something similar to dividing qty/(ceiling) max_qty_value. Once I have that number I need to write an additional duplicate row for each value from the prior calculation performed. For example, 15/4 = 4. I need to write 4 rows to the same target table as in line information for a purchase order.
The multicast transform appears to only support fixed and/or predetermined outputs. How do I design this logic in SSIS to write out dynamic number of rows to a target table.
Any ideas would be greatly appreciated.
thanks
John
View 18 Replies
View Related
Apr 25, 2008
Hi i've 6 files with the same name part but all have a different ext. The 17 always changes to the current week number
xbouns.A17
xbouns.B17
xbouns.C17
I want to import these files into a database table. So I've create a foreach loop and select the foreach file enumerater but am not sure if this is the right way to go about it some help woth be great thanks.
View 7 Replies
View Related
Apr 28, 2008
Hi i've 6 files with the same name part but all have a different ext. The 17 always changes to the current week number
xbouns.A17
xbouns.B17
xbouns.C17
I'd like to do this within a SSIS package some help in getting this to work would be great.
Thanks
View 12 Replies
View Related
Jul 5, 2006
The project I'm working on has been developed using SQL 2005 Developer Edition and VS 2005, so up until now VS has been handling the task of deploying my C# managed code stored procedures to the database.
Now it's time to deploy a beta of the product, and we want to use SQL 2005 Express, and take advantage of it's new XCOPY deployment mode which in turn means we can also take full advantage of Click Once for our software updates. The idea here is that we can deploy new or updated stored procedures in a managed DLL using Click Once, making updates presumably more simple and robust.
So the steps we need to complete at runtime are:
1. Dynamically load and access the database MDF file using SQL Express (done).
2. Enable CLR Integration for the dynamically loaded DB (done)
3. Instantiate all of the stored procedures - help!
Looking at the docs, it seems we have to execute the following SQL for each and every SP:
CREATE PROCEDURE <Procedure Name>
@inputArg2 type, @inputArg2 type, @inputArg3 type OUTPUT
AS EXTERNAL NAME <Assembly Identifier>.<Type Name>.<Method Name>
But, we're talking about literally hundreds of stored procedures that need to be instantiated here, which obviously means a lot of double-definitions and a fairly high chance of bugs creeping in.
Surely there has to be a better way?
View 3 Replies
View Related
Mar 6, 2007
Hello.
I am attempting to document the various files that are incorporated into a reporting services project and need a more official explanation or defintion of the particular file and it's purpose. I understand what most of the files are and what they serve but would prefer to document it using Microsoft's official explanation so that we can decide which files may require that we source control them.
I have tried searching MSDN for 'file extentions',' file types', and typing in the individual .xxx extensions in to see if there is a documented definition for those files but seemed to get results that do not give me an official definition, didn't come close or were entirely not related.
.sln, .suo, .rds, .rdl, .rdl.data, .rptproj, .rptproj.vspscc, etc
Any links to the official explantion or definition of the files that make up a reporting services report project and their function/importance to the project would be appreciated.
Thanks.
View 1 Replies
View Related
Jan 25, 2008
Quick question...
Is a report rendered as PDF, a real PDF?
I want to deliver reports for an application we are developing via or current ECM system. I need the report to be full text indexed. A TIFF wrapped in a PDF isn't always the best thing for full text indexing.
View 1 Replies
View Related
Apr 17, 2006
A little history:
I have an app that lives on a single server including the SQL database as well as the asp, xsl, etc files.
Due to space issues I've copied my DB to a remote server.
Everything looks to be working well.
All dropdowns (pulled fom a view on the remote db) populate etc.
The problem arises when I try to query the remote DB.
I recieve the following error.
Microsoft XML Extensions to SQL Server error '80004005'
SQLXML: error loading XSL stylesheet
Any thoughts?
Thanks
View 1 Replies
View Related
Feb 28, 2008
Hello all,
I am making a query which will select those records from table where a column data ends with a particular extension,i.e.
I want the query to fetch the rocords where FileName(column name) ends with .JPEG or .GIF or .BMP.
I have five records in table and FileName(columns name) contains three .JPEG ,one .GIF & one .BMP files name.
How can i get for a particular extension?
Thanks in advance
View 1 Replies
View Related
Apr 12, 2007
Hi,
I'm having a lot of trouble trying to set up a custom security extension with Reporting Services 2005. Following the VB example from McGraw Hill Osborne (http://www.mhprofessional.com/product.php?cat=112&isbn=0072262397&cat=112), I've compiled the .dll for the extension and made the changes to the ReportManager and ReportServer .config files. After I reset IIS and return to the RS website, it displays "The report server has encountered a configuration error..." and I get a message in my System Event log:
The application-specific permission settings do not grant Local Activation permission for the COM Server application with CLSID
{BA126AD1-2166-11D1-B1D0-00805FC1270E}
to the user MYMACHINEASPNET SID (S-1-5-21-1708537768-839522115-1343024091-1005). This security permission can be modified using the Component Services administrative tool.
Wondering if anyone else has had similar trouble and how did they get around it?
View 2 Replies
View Related
Jul 8, 2004
Hi All
We have requirement in Reports. When ever report is sent to file share using Reporting Services File Share extension than details of that file should be saved in database.
How can we achieve this functionality? What is the best possible way of achieving this?
Please let me know the solution.
Thanks in advance
Rehan Mustafa Khan
HCL Technologies
Noida,India
View 1 Replies
View Related
Jan 10, 2007
In Sql Reporting Services 2005 (This is bolded because this same error is all over the web for Sql Reporting Services 2000 and thats not where my problem lies) I schedule a report to be emailed. However when the delivery extensions Deliver method is called I get the following error
Failure sending mail: The report server has encountered a configuration
error. See the report server log files for more information.
In the log it shows the following
ReportingServicesService!emailextension!4!01/10/2007-12:21:01:: Error sending email. Microsoft.ReportingServices.Diagnostics.Utilities.RSException: The report server has encountered a configuration error. See the report server log files for more information. ---> Microsoft.ReportingServices.Diagnostics.Utilities.ServerConfigurationErrorException: The report server has encountered a configuration error. See the report server log files for more information. at Microsoft.ReportingServices.Authorization.Native.GetAuthzContextForUser(IntPtr userSid) at Microsoft.ReportingServices.Authorization.Native.IsAdmin(String userName) at Microsoft.ReportingServices.Authorization.WindowsAuthorization.IsAdmin(String userName, IntPtr userToken) at Microsoft.ReportingServices.Authorization.WindowsAuthorization.CheckAccess(String userName, IntPtr userToken, Byte[] secDesc, ReportOperation requiredOperation) at Microsoft.ReportingServices.Library.RSService._GetReportParameterDefinitionFromCatalog(CatalogItemContext reportContext, String historyID, Boolean forRendering, Guid& reportID, Int32& executionOption, String& savedParametersXml, ReportSnapshot& compiledDefinition, ReportSnapshot& snapshotData, Guid& linkID, DateTime& historyOrSnapshotDate, Byte[]& secDesc) at Microsoft.ReportingServices.Library.RSService._GetReportParameters(ClientRequest session, String report, String historyID, Boolean forRendering, NameValueCollection values, DatasourceCredentialsCollection credentials) at Microsoft.ReportingServices.Library.RSService.RenderAsLiveOrSnapshot(CatalogItemContext reportContext, ClientRequest session, Warning[]& warnings, ParameterInfoCollection& effectiveParameters) at Microsoft.ReportingServices.Library.RSService.RenderFirst(CatalogItemContext reportContext, ClientRequest session, Warning[]& warnings, ParameterInfoCollection& effectiveParameters, String[]& secondaryStreamNames) at Microsoft.ReportingServices.Library.RenderFirstCancelableStep.Execute() at Microsoft.ReportingServices.Diagnostics.CancelablePhaseBase.ExecuteWrapper() --- End of inner exception stack trace --- at Microsoft.ReportingServices.Diagnostics.CancelablePhaseBase.ExecuteWrapper() at Microsoft.ReportingServices.Library.RenderFirstCancelableStep.RenderFirst(RSService rs, CatalogItemContext reportContext, ClientRequest session, JobType type, Warning[]& warnings, ParameterInfoCollection& effectiveParameters, String[]& secondaryStreamNames) at Microsoft.ReportingServices.Library.ReportImpl.Render(String renderFormat, String deviceInfo) at Microsoft.ReportingServices.EmailDeliveryProvider.EmailProvider.ConstructMessageBody(IMessage message, Notification notification, SubscriptionData data) at Microsoft.ReportingServices.EmailDeliveryProvider.EmailProvider.CreateMessage(Notification notification) at Microsoft.ReportingServices.EmailDeliveryProvider.EmailProvider.Deliver(Notification notification)
So it seems to be failing at GetAuthzContextForUser
I've set up my smtp as out domain email smtp, given the accounts all the permissions I could (Even going to far as to give Everyone permissions everywhere)
Currently my IIS, SQL 2005 and reporting Services 2005 as well as my local SMTP is running on the local machine account.
I cannot seem to get it to work, or even give me a different error.
Could anybody please tell me what needs permission where and what settings I need to have set up for this not to happen.
Some extra information
I'm using Windows XP to develop on however the server where this will eventually run is Windows Server 2003
I'm using ASP.NET 2 and SQL Reporting Services 2005 and SQL 2005 with sp1 loaded
Any help would be appreciated
View 1 Replies
View Related
