Hi:
one production server DB is getting slower... (SQL2K sp4 ent)
1. dbcc checkdb(abc) with 0 errors
2. no blocking
3. no abnormal in sql log and event system log
4. only found one crypt32 auto update fail last night.
the Lock Requests/sec is kind high from 5400 to 15400 on 0.01 scale. max is from 57611 to 155411.
Could I increase the locks assigned to sql and what is the best way for it?
thanks
david
I'm monitoring one of our servers, and on the whole it is performingwell. However, I'm puzzled by the number of LockRequests/sec thatPerfmon is recording. We frequently see values exceeding 50,000 andthe current peak is 533,616 (the average, as I type this, is 35,102).There are only 40 users on the system.sp_lock shows nothing like this number of locks; it shows somethingof the order of 30 locks maximum for each execution, which seems farmore reasonable.SQL Profiler seems to back up the Perfmon values; it records hundredsof "Lock Acquired" events per second during these peak periods.For example:NO. OFLOCKS OBJECT STARTTIME===== ====== ======================678User_T2005-04-15 09:03:22.863931User_T2005-04-15 09:03:22.877924User_T2005-04-15 09:03:22.89316EnquiryUser_T2005-04-15 09:03:22.893961User_T2005-04-15 09:03:22.910820User_T2005-04-15 09:03:22.9234NULL2005-04-15 09:03:22.923828User_T2005-04-15 09:03:22.9404NULL2005-04-15 09:03:22.940734User_T2005-04-15 09:03:22.957Can anyone think why such a comparatively small system should generatethese numbers of locks? Why does sp_lock NOT show the same level oflocking?
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We recently implemented merge replication.We were expereincing. The replication is between 2 SQL Servers (2005) over same network box, and since we have introduced the replication, the performance has degraded considerably on subscriber end.
1) One thing that should be mention is that its a "unidirectional Direction" flow of changes is from publisher towards subscriber (only one publisher and distributor as well and one subscriber ).
2) Updates are high than inserts and only one article let say "Article1" ave update up to 2000 per day and i am experiecing that dbo.MSmerge_upd_sp_Article1_GUID taking more cpu time.what should be do..
on subscriber database response time is going to slow and i am experiencing a lot of number of LOCK time outs on application end.
can any one can also suggest me server level settings for aviding locking time out.
looking for any experieced solution/suggestion.
Thanks in advance.
Hi,
Is there a way to configure mirroring to go from High Availability to High Protection without having to reconfigure Database Mirroring? Using the interface in Management Studio, I can change the configuration option to High Performance, but not High Protection despite both of them being Synchronous.
If not, what are the recommended steps to configure the mirror once it already has been configured? Is just like initially setting up the mirror or would there be any shortcuts I could take? If I stop the mirroring and remove the witness, will the High Protection option be available?
Thanks,
J.
Hi There
I realise this is a stupid quesiton but i cannot really find any confirmation of this in BOL.
If you are running High Safety with automatic failover, when failover occurs does this automatically change to High Performance mode. SInce for failover to occur something has happen with the primary , it will be impossible to commit transactions on the new primary and mirror asyncronously since 1 of them is no longer available.
So am i correct in assuming that automatic failover also automatically changes the mode to High Performacne for that session?
Thanx
I simply made my script task (or any other task) fail
In my package error handler i have a Exec SQL task - for Stored Proc
SP statement is set in following expression (works fine in design time):
"EXEC [dbo].[us_sp_Insert_STG_FEED_EVENT_LOG] @FEED_ID= " + (DT_WSTR,10) @[User::FEED_ID] + ", @FEED_EVENT_LOG_TYPE_ID = 3, @STARTED_ON = '"+(DT_WSTR,30)@[System::StartTime] +"', @ENDED_ON = NULL, @message = 'Package failed. ErrorCode: "+(DT_WSTR,10)@[System::ErrorCode]+" ErrorMsg: "+@[System::ErrorDescription]+"', @FILES_PROCESSED = '" + @[User::t_ProcessedFiles] + "', @PKG_EXECUTION_ID = '" + @[System::ExecutionInstanceGUID] + "'"
From progress:
Error: The Script returned a failure result.
Task SCR REIL Data failed
OnError - Task SQL Insert Error Msg
Error: A deadlock was detected while trying to lock variable "System::ErrorCode, System::ErrorDescription, System::ExecutionInstanceGUID, System::StartTime, User::FEED_ID, User::t_ProcessedFiles" for read access. A lock could not be acquired after 16 attempts and timed out.
Error: The expression ""EXEC [dbo].[us_sp_Insert_STG_FEED_EVENT_LOG] @FEED_ID= " + (DT_WSTR,10) @[User::FEED_ID] + ", @FEED_EVENT_LOG_TYPE_ID = 3, @STARTED_ON = '"+(DT_WSTR,30)@[System::StartTime] +"', @ENDED_ON = NULL, @message = 'Package failed. ErrorCode: "+(DT_WSTR,10)@[System::ErrorCode]+" ErrorMsg: "+@[System::ErrorDescription]+"', @FILES_PROCESSED = '" + @[User::t_ProcessedFiles] + "', @PKG_EXECUTION_ID = '" + @[System::ExecutionInstanceGUID] + "'"" on property "SqlStatementSource" cannot be evaluated. Modify the expression to be valid.
Warning: The Execution method succeeded, but the number of errors raised (4) reached the maximum allowed (1); resulting in failure. This occurs when the number of errors reaches the number specified in MaximumErrorCount. Change the MaximumErrorCount or fix the errors.
And how did I get 4 errors? - I only set my script task result to failure
Hi
We are facing an acute situation in our web-application. Technology is ASP.NEt/VB.NET, SQL Server 2000.
Consider a scenario in which User 1 is clicking on a button which calls a SQL stored procedure. This procedure selects Group A of records of Database Page1.
At the same time if User 2 also clicks the same button which calls same SQL stored procedure. This procedure selects Group B of records of Database Page1.
So, its the same Page1 but different sets of records. At this moment, both the calls have shared locked on the Page1 inside the procedure.
Now, in call 1, inside the procedure after selecting Group A of records, the next statement is and update to those records. As soon as update statement executes, SQL Server throws a deadlock exception as follows :
Transaction (Process ID 78) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction
We are able to understand why its happening. Its because, Group A and Group B of records are on the same Page1. But both the users have shared lock on the Page1. So, no one gets the exclusive lock in records for update, even though, the records are different.
How can I resolve this issue? How can I get lock on wanted rows instead of entire page?
Please advice. Thanks a bunch.
Pankaj
Folks,
I have been hunting for a way to trace sql requests going to/from the sql express server (from VS.2005 using asp.net). I.E., I want to see the raw SQL commands that asp.net is generating.
Can anyone point me to a tool or article? Thanks,
--stuart
Hi. I'm new to SQL Server programming. I'm using it at my new job for the first time and catching on quickly. I've run into a problem where I run a request via interactive query and it times out. It's really annoying because it seems to happy a lot. Is this just a memory issue with my machine (it has 2.8 GB of RAM) or there a way around it?
Thanks!
May be it's too late, but I think this requests could be scheduled at least
View 145 Replies View RelatedHello,
You help is very much appreciated.
I have an Intranet environment that contains tens of apps that use a specific database.
I want to create an Intranet test environment (which will use a test database), by basically copying the existing Intranet environment to a new location.
* I cannot change the connection strings in the applications level since each app stores it differently (some store it in Web.Config, some hard coded, etc....).
Then, have a layer that sits between the Intranet Apps and SQL SERVER (or inside SQL SERVER itself), that will intercept the connections requests.
Once intercepted, the code will check if the connection request comes from Intranet Test environemnt, and if so, change the connection string on the fly to point to the test database.
The question:
Is there a way in SQL SERVER 2005, to intercept connections, and then, based on the application that requested the connection, modify the connection on the fly (so that if the calling app is from test_Intranet – intercept the connection and change it to point to a test database, otherwise leave the connection as it is (live database).
Thank you,
Roy
To any Microsoft SSIS developers reading this forum, some requests:
1) do NOT allow a package to run if it has "package configurations" enabled and one or more XML files with configurations cannot be found;
2) update the properties window with the properties read from the "package configurations";
3) allow relative paths in the "package configurations" locations (relative to the package location)
Thank you :-)
Hi,
I have set of 2 DTS packages, one of which calls the other by forming a command-line (dtexec) using a Execute Process task.
From the parent package-> Execute Process Task->
dtsexec /F etc... /<pkg variable> = "servername"
Each of the parent and the called package have a variable: "User::DWServerSQLInstance" which is mapped to the SQL server connection manager server name property using an expression. The outer package has the above variable and so does the inner called package (which gets assigned through the command line from the outerpackage call to inner)
I "sometimes" get the following error:
OnError,I4,TESTDOMAdministrator,ACDWAggregation,{A1F8E43F-15F1-4685-8C18-6866AB31E62B},{77B2F3C7-6756-46EB-8C01-D880598FB4B3},5/22/2006 5:10:28 PM,5/22/2006 5:10:28 PM,-1073659822,0x,The variable "User::DWServerSQLInstance" is already on the read list. A variable may only be added once to either the read lock list or the write lock list.
Help would be appreciated!
I have seen other posts on this but, not able to relate the solution to my scenario.
i have an aplication with any problems, the aplication is hang and in the log is
SQL Server has encountered 1 occurrence(s) of IO requests taking longer than 15 seconds to complete on file [d:Program FilesMicrosoft SQL ServerMSSQLdata empdb.mdf] in database [tempdb] (2). The OS file handle is 0x000003DC. The offset of the latest long IO is: 0x00000016930000 and the aplication log is
E R R: [Microsoft][ODBC SQL Server Driver][Shared Memory]ConnectionWrite (WrapperWrite()). NUMERO -2147467259 FUENTE Microsoft OLE DB Provider for ODBC Drivers
can yu help me
I have a scenario where we want something like a message bus. We can have multiple clients sending in events and would like a way to
i) persist those events
ii) Send out the notifications to the subcribers (this would be some C# services)
What is the best way to do this? I know that we can build something from scratch using WCF Publish-Subscribe. But i was interested in knowing if I can leverage SQL Service Broker to do the work.
Hi,
One of my client want to shift his reporting to SSRS. He wants to submit his report requests to SSRS. He wants the report should run at the reporting server side (not on client system) and output should be exported to a folder on server.
I am some what successful in submitting the report requests using subscriptions. But I have no idea to retrieve the requests from SSRS with the execution status.
I have to display all submitted reprot requests with execution status (success or fail) in a data grid and user selects one report to see the out file. Where can I get this information?
And how can I create a subscription that runs immediatly after submission. (without any delay)?
Help me please!!!
Thanks in advance, Gouri Sankar
Hello, I have a bit of a problem. Some of my pages has way to many database requests, some pages upto 70 requests,and the loading time can be all the way up to 12seconds because of the many requests. So i am trying to optimize it abit.What i want to know if how to send several ID's to the database and collect the result from all of the ID's, i have a stored procedure like this:
public DataTable User_GetUsernameTypeTwo(string strUsername){OpenDBCon();mCom.Parameters.Clear();mCom.CommandText = "Profile_GetUsernameTypeTwo";mCom.Parameters.Add(new SqlParameter("@UserName", SqlDbType.NVarChar, 20));mCom.Parameters["@UserName"].Value = strUsername;myAdap = new SqlDataAdapter();myTable = new DataTable();myAdap.SelectCommand = mCom;myAdap.Fill(myTable);CloseDBCon();return myTable;}
To this i send a username and in return i get info about the user that then is presented on the page. If i have a gridview on the page with 20 posts, then it needs to make 20 requests to this file in order to collect all the info for all the users. Then i have one just like the one above that collects the photos of all the users. So my first thought was that i merge these two together, witch works perfect, reduces the database calls by around 40%. Then i thought, perhaps can i get all the info from all the users in 1 request, to reduce the load on the database even more, my problem is: How can i rewrite the one above to accept lets say 50 usernames (1 username can max have 20characters), and return the info from all of them. Since i use a stored procedure i cant with ease use WHILE (username = xxx) AND (username = yyy) AND (username = ccc), then i would have to add 50 Parameters and add each username to a seperate parameter and then look if the parameter is null or if it contains a username. So i need to find another way to send the usernames, so the sqlserver can add them to the where clause, perhpas using IN?
This is the sql server store procedure (it works perfect, when its one user i am requesting info about), i am using FULL OUTER JOIN because ALL fields i request can be NULL:
ALTER PROCEDURE [dbo].[Profile_GetUserpopupInfo] -- Add the parameters for the stored procedure here@UserName nvarchar(20)ASBEGIN-- SET NOCOUNT ON added to prevent extra result sets from-- interfering with SELECT statements.SET NOCOUNT ON;SELECT settings_username.color, settings_username.pic1, settings_username.pic2, profile_profilephoto.imageurl, profile_profilephoto.alttext FROM settings_username FULL OUTER JOIN profile_profilephoto ON profile_profilephoto.username = settings_username.username AND (profile_profilephoto.approved = 1) WHERE (settings_username.username = @UserName)END
Anyone got any idea of how to send a bunch of usernames to this stored proc? (it must be efficient since there is alot of users)
Patrick
We are experiencing a situation where the SRS (2000 SP2) report server will no longer render reports. In the log file, there are many instances of
w3wp!runningjobs!434!3/23/2007-10:12:57:: i INFO: Adding: 8 running jobs to the databasew3wp!runningjobs!434!3/23/2007-10:13:57:: i INFO: RunningJobContext.IsClientConnected; found orphaned requestw3wp!runningjobs!434!3/23/2007-10:13:57:: i INFO: RunningJobContext.IsExpired; found expired requestw3wp!runningjobs!434!3/23/2007-10:13:57:: i INFO: RunningJobContext.IsExpired; found expired requestw3wp!runningjobs!434!3/23/2007-10:13:57:: i INFO: RunningJobContext.IsExpired; found expired requestw3wp!runningjobs!434!3/23/2007-10:13:57:: i INFO: RunningJobContext.IsClientConnected; found orphaned requestw3wp!runningjobs!434!3/23/2007-10:13:57:: i INFO: RunningJobContext.IsClientConnected; found orphaned requestw3wp!runningjobs!434!3/23/2007-10:13:57:: i INFO: RunningJobContext.IsExpired; found expired requestw3wp!runningjobs!434!3/23/2007-10:14:57:: i INFO: RunningJobContext.IsClientConnected; found orphaned requestw3wp!runningjobs!434!3/23/2007-10:14:57:: i INFO: RunningJobContext.IsExpired; found expired requestw3wp!runningjobs!434!3/23/2007-10:14:57:: i INFO: RunningJobContext.IsExpired; found expired requestw3wp!runningjobs!434!3/23/2007-10:14:57:: i INFO: RunningJobContext.IsExpired; found expired requestw3wp!runningjobs!434!3/23/2007-10:14:57:: i INFO: RunningJobContext.IsClientConnected; found orphaned requestw3wp!runningjobs!434!3/23/2007-10:14:57:: i INFO: RunningJobContext.IsClientConnected; found orphaned requestw3wp!runningjobs!434!3/23/2007-10:14:57:: i INFO: RunningJobContext.IsExpired; found expired request
What could be causing this? The reports are making queries through an OLE DB provider. There are no scheduled jobs, and the load doesn't seem that heavy.
Hi All,
I have seen a few other people have this error.
Package works fine when run from BIDS, DTExec, dtexecui. When I schedule it, It get these random errors. (See below)
The main culprit is a variable called "RecordsetFileDIR" which is set using an expression. (@[User::_ROOT] + "RecordSets\")
A number of other variables use this as part of their expression and as they all fail, pretty much everything dies.
I have installed SP1 (Not Beta) on server. Package uses config files to set the value of _ROOT.
The error does not always seem to be with this particular variable though. Always a variable that uses an expression but errors are random. Also, It will run 3 out of 10 times without a problem. I am the only person on the server at the time.
Any ideas?
Cheers,
Crispin
Error log:
OnError,,,POSBasketImport,,,10/05/2006 12:03:34,10/05/2006 12:03:34,-1073659822,0x,The variable "User::RecordsetFileDIR" is already on the read list. A variable may only be added once to either the read lock list or the write lock list.
OnError,,,POSBasketImport,,,10/05/2006 12:03:34,10/05/2006 12:03:34,-1073639420,0x,The expression for variable "rsHeaderFile" failed evaluation. There was an error in the expression.
OnError,,,DF_Header_Header,,,10/05/2006 12:03:34,10/05/2006 12:03:34,-1071636247,0x,Accessing variable "User::rsHeaderFile" failed with error code 0xC00470EA.
OnError,,,Move All Data,,,10/05/2006 12:03:34,10/05/2006 12:03:34,-1071636247,0x,Accessing variable "User::rsHeaderFile" failed with error code 0xC00470EA.
OnError,,,Load Open Batches and Process Files,,,10/05/2006 12:03:34,10/05/2006 12:03:34,-1071636247,0x,Accessing variable "User::rsHeaderFile" failed with error code 0xC00470EA.
OnError,,,POSBasketImport,,,10/05/2006 12:03:34,10/05/2006 12:03:34,-1071636247,0x,Accessing variable "User::rsHeaderFile" failed with error code 0xC00470EA.
OnError,,,DF_Header_Header,,,10/05/2006 12:03:34,10/05/2006 12:03:34,-1071636390,0x,The file name is not properly specified. Supply the path and name to the raw file either directly in the FileName property or by specifying a variable in the FileNameVariable property.
OnError,,,Move All Data,,,10/05/2006 12:03:34,10/05/2006 12:03:34,-1071636390,0x,The file name is not properly specified. Supply the path and name to the raw file either directly in the FileName property or by specifying a variable in the FileNameVariable property.
OnError,,,Load Open Batches and Process Files,,,10/05/2006 12:03:34,10/05/2006 12:03:34,-1071636390,0x,The file name is not properly specified. Supply the path and name to the raw file either directly in the FileName property or by specifying a variable in the FileNameVariable property.
OnError,,,POSBasketImport,,,10/05/2006 12:03:34,10/05/2006 12:03:34,-1071636390,0x,The file name is not properly specified. Supply the path and name to the raw file either directly in the FileName property or by specifying a variable in the FileNameVariable property.
OnError,,,DF_Header_Header,,,10/05/2006 12:03:34,10/05/2006 12:03:34,-1073450901,0x,"component "rsHeader" (365)" failed validation and returned validation status "VS_ISBROKEN".
OnError,,,Move All Data,,,10/05/2006 12:03:34,10/05/2006 12:03:34,-1073450901,0x,"component "rsHeader" (365)" failed validation and returned validation status "VS_ISBROKEN".
OnError,,,Load Open Batches and Process Files,,,10/05/2006 12:03:34,10/05/2006 12:03:34,-1073450901,0x,"component "rsHeader" (365)" failed validation and returned validation status "VS_ISBROKEN".
OnError,,,POSBasketImport,,,10/05/2006 12:03:34,10/05/2006 12:03:34,-1073450901,0x,"component "rsHeader" (365)" failed validation and returned validation status "VS_ISBROKEN".
I have an application that calculates a bunch of numbers and then inserts them into a table (or updates a record in the table if it exists). In my test environment it is issuing 100 insert or update requests to the server per second and it could run for several hours.After a the first several hundred requests, the SQL server is bogging down (processor at 90-100%) and the application slows down while it waits on SQL to update the database.What would be the best way to optimize this app? Would it help to loop through all my insert/update requests and then send them as one big batch of statements to the server (per 1000 requests or something)? Is there a better way of doing this?Thanks!
View 1 Replies View RelatedHello,
I have been working as Sybase DBA for 5+ years, and I would very much like to add MS SQL Server to my resume. Given the common roots of the two RDBMS, it seems that the learning curve would not be as sharp as if I were going to learn Oracle or DB2. Can anyone out there know of any books that are geared toward learning MS SQL Server from a Sybase DBAs perspective?
Thank you,
- Chris Merz
Hi,
I want to know how to assign a normal user to take backup,Restore and attach and detach the database in sqlserver2000.
Please can anyone help me to find out which server role or database role will suites my requirements.
Regards
Md S.Hassan
For Bulk Load requests in SQL server, Are there any specific profiler event? Like the one we have for RPC RPC:Starting and for Batch Requests, we have SQL:BatchStarting.
Are Bulk Load requests that are being monitored through Profiler captured as SQL:Batch... events at the backend?
Are there any new features added in 2012 or 2014 to identify a Bulk request submitted through bcp.exe utility or any other sqlbulkcopy program?
Working on this issue ... SSIS package trying to load data from DB2 to SQL ....
IBM OLE DB Provider for DB2"
Hresult: 0x8004D01C
Description: " SQL1224N The database manager is not able to accept new requests, has terminated all requests in
progress, or has terminated the specified request because of an error or a forced interrupt. SQLSTATE=55032
SSIS Error Code DTS_E_PRIMEOUTPUTFAILED -
The PrimeOutput method on component "OLE DB Source" (1)
returned error code 0xC0202009. The component returned a failure code when the pipeline engine called PrimeOutput().
The meaning of the failure code is defined by the component, but the error is fatal and the pipeline stopped executing.
some times i need to take db in single user mode , which can be done using following
ALTER DATABASE xyz
SET SINGLE_USER WITH NO_WAIT
this has other options but each one has some problems like if any single window is open at any location etc etc.
Q1)so the need is i want to honor running transaction from msss or any application then i want db to get into single mode so that i can perform my task.
Q2) some times i need to restart db as it becomes slow , i am trying to find the reason primarily i have seen it is memory.so i want to restart my db honoring all requests.
Hello,
I see the following error on the sql server log of one of our sql servers running sql 2000 with sp4.
SQL Server has encountered 1964 occurrence(s) of IO requests taking longer than 15 seconds to complete on file [h: empdb.mdf] in database [tempdb] (2). The OS file handle is 0x00000534. The offset of the latest long IO is: 0x0000002b09e000
Any idea as to what might be causing this error. Appreciate any comments.
Thanks!
Hi,
I want to lock a table so others cannot lock it but able to read it inside transactions.
The coding I need is something like this: set implicit_transactions on begin transaction select * from table1 with (tablock, holdlock) update table2 set field1 = 'test' commit transaction commit transaction
I have tried the coding above, it won't prevent others from locking table1.
So, I changed the tablock to tablockx to prevent others from locking table1. But this will also prevent others from reading table1. So, how can I lock table1 so others cannot lock it but still able to read it?
Thank you for any help
I have created a local user on Report Server Computer and the user has the administrative rights.
When i try to connect Report Server (http://xxx.xxx.xxx.xxx/reportserver) with this user's credantials. (ReportServer directory security is set -only- to Basic Authentication. ).
I get the following error.
Reporting Services Error
--------------------------------------------------------------------------------
The number of requests for "XXXServerXXXUser" has exceeded the maximum number allowed for a single user.
--------------------------------------------------------------------------------
SQL Server Reporting Services
Then i try to login using a different user with administrative rights on the machine, i can logon successfully.
The system is up for a month but this problem occured today?!? What could be the problem?!?
I need to use a system-generated key and will have over 2 billion items.
I'm considering using a data type like the following.
Decimal(19,0) will give me the large numbers I need without making my index wider than 9 bytes.
Uniqueidentifier is 16 bytes.
Anyone know if this will cause me pain in the future? Specifically using @@identity after inserts to get the value (i tested it seems OK).
CREATETABLEIdentityTest
(
MyIDDECIMAL (19,0)IDENTITY (1,1),
MyCharchar(1) NOT NULL DEFAULT 'Y'
)
Any ideas welcome.
Dano
After a fresh install of SQL 6.5 with SP5a(or without), the cpu is running at anywhere from 50%-80%. It is loaded on a PDC, but when I stop the sql service cpu utilization drops to 0-2%. When I start the sql service it's right back up there, does anyone have a suggestion as to how to fix this or why the service would be doing this?
Thanks, Christel
Hello everybody,
We are starting new project
Customer validation with minimum wait time.
How to insure High-Availability?
We have 2 standard servers and in past used custom log shipping.
Log shipping still requre manual intervention ,while goal to switch
between servers automaticly.
Clustering is a last possible solution.
Could someone recomend any other soluion or products?
Thank you
Alex
Hello,
We are experiencing high disk i/o on one of our RAID disk systems. Can someone tell me how I can identify the query or user or process which is causing this high disk i/o?
Thanks,
Brent.
I am getting high CPU utilization on the SQL Server process (>90%).
However the overall utilization (NT -- entire box) always seems to be under 50%.
Can someone explain why this is happening. The server is a quad; the SQL server process seems to be using only two CPUs at a time (not the same ones all the time).
Lightweitht pooling has been turned on and the maximum worker thread size has been left at the default value (255).
How can I configure SQL options to spread the load across all four CPUs ??????