Hey All:
About a month ago I setup mirroring with our DB, High safety with automatic failover. Ever since the lock waits per minute in the DB went from maybe 2-5 per minute to 22-25 per minute. I am not sure if this was expected or what; but sometimes it spikes even higher than that.
Does this sound off the charts to anyone or normal for mirroring?
Thanks,
Let me know if you need anymore info....
Last Sunday on our Primary server I saw some blocking and the First spid that blocked everything was waiting on LogBuffer wait. At that time the server was not running hot and our DB is on SSD's. There was no memory pressure(1 TB of memory on the server) It is strange why we should get LogBuffer wait when we are running on the fastest disks possible and there was not much action going on the DB.
View 4 Replies View RelatedHello to all,I have a small question.I call the SP outer the DB. The procedure deletes some record in tableT1.The table T1 has a trigger after delete.This is very importand for me, that the SP will be finished ASAP,that's why, I do not want, and I do not need to wait for a trigger.Does the SP will be finished, after the trigger is finished?Means, does the SP "waits" for a trigger?I think it is like that. Is it anyhow possible, to set the trigger (orthe procedure) that it want's be waiting for a result of triggerexecution?Thank You for kindly replyMateusz
View 1 Replies View RelatedHI,
I have a query that keeps on waiting with a wait type of SOS_SCHEDULER_YIELD. I have checked for the CPU pressure as well, and there is nothing else running. The query outline is given below.
Select a,b,c,d....
FROM tableA A inner join tableB B on A.a = B.b
inner join tableC on B.c = C.c
where
a.x not in (SELECT x from tableX where y = '???')
I have restored the copy of prod DB on a DEV box and ran the query which runs fine. But the prod box which is more powerful chokes. DEV is a 4CPU/4GB box and PROD is 8CPU/32GB box. All other DB and Server settings are exactly the same. DEV is SQL 2005 Standard ed SP2. Prod is a SQL 2005 Enterprise ed SP2.
Thanks in advance,
Sirish
Back in the days of SQL 7.0 I used a lot of ODBC SELECT querying form VB applications, in which I implemented NOLOCK in order to prevent the primary business applications from being locked out of tables once the queries were run.
Now, quite a few years later, I'm busying myself converting a lot of old Access based forms and queries to TSQL on SQL-Server 2000, and wonder aimlessly why NOLOCK queries (simple select ones) are imensely slower than a standars select clause.
SELECT * FROM employees
This would be much much faster than the code below, but users would get "The current record could not be accessed, as it is being used by another user", evidently because I'm locking the record while producing the output.
SELECT * FROM employees (nolock)
So this could should - as I remember it - do a dirty read on table, not obstructing other users and give me a snapshot of date as they are, although they might be locked for edit.
Could anyone explain to me why the nOLOCK query fials to give me any output? It is as if the nolock request is waiting for the table/records to free? In which case I'll never be able to run a query.
Cheers in advance, Trin
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
I am trying to find out what could be causing this issue. Why would we be waiting on cpu when its barely being used. Signal waits are varying from 35 to 55% and cpu usage is only at 5% usage.We are using Windows Server 2012 with SQl Server 2012 Standard edition with cpu5. There are 3 instances on the server each with max memory 50gb memory and the server has a total of 190gb memory. The machine is a 12 core machine with hyperthreading enabled.
View 8 Replies View RelatedHello,
I have MS SQL Server 2005 with SP1 installed, version 9.0.2047
I am trying to debug a Script Task in SSIS.
I have break point on the first line of the code.
SSIS runs and eventually launches MS Visual Studio for Applications.
Line with the break point is highlighted in yellow.
After that Visual Studio is frozen. F5, F11 or any other key press produces a popup which says the following:
Delay notification.
Microsoft Visual Studio for Applications is waiting for an operation to complete. If you regularly encounter this delay during normal usage please report this problem to Microsoft. Please include a description of the work you were doing in Microsoft Visual Studio for Applications and when possible instructions how to reproduce this delay.
If Microsoft Visual Studio for Applications is waiting on another application you can switch to that application now, or you can continue waiting for this operation to complete.
The popup has to buttons: [Switch to€¦] and [Continue Waiting]
None of the buttons allows to proceed.
Any idea what causes Microsoft Visual Studio for Applications to a complete halt?
Regards,
Yitzhak
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
I have a 2GHZ cpu with 1GB of RAM. I occassionally see very slow (long) queries against a local SQL Server 2005 Express (SP2) database. The issue occurs against different SQL Queries, but all queries are rather basic select statements Perfmon shows that the SQL Server counter for the "MEMORY GRANT QUEUE WAIT Avg MS" gets extremely high (25000+ ms). Perfmon also also shows that PAGING is not occuring, and the system is not under unsual stress. The problem is not reproducible with MSDE.
Has anyone seen this issue, or have any recommendations for a next course of action?
Server A = primary SQL DBs (mirroring origination)
Server B = failover SQL DBs (mirroring destination)
For database mirroring a witness is required.
Can the witness live in another instance of SQL on server B?
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.
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".
Is it possible expire a report cache after less than one minute? I'm looking for a way to only have a report hit the database once every 10 seconds, no matter how many people are hitting it. Thanks.
View 1 Replies View RelatedHi,
Here is a part of result set.
It is of every minute value.
How can I get every other 5-minute average value?
id datetime value
------------------- ----------------------------- --------
0xC00302FD 2008-01-31 18:36:00 0.104
0xC00302FD 2008-01-31 18:37:00 0.104
0xC00302FD 2008-01-31 18:38:00 0.104
0xC00302FD 2008-01-31 18:39:00 0.104
0xC00302FD 2008-01-31 18:40:00 0.104
0xC00302FD 2008-01-31 18:41:00 0.104
0xC00302FD 2008-01-31 18:42:00 0.104
...
...
...
How do i calculate the Transactions Per Minute (TPM). Do i need to use the Performance Monitor or Profiler. Let me know How do i calcualte.
I would like to have 24,000 inserts in One minute Per data migration. Is 24,000 will be Transaction Per Minute.
Thanks in Advance.
SS
I need a query that gives me the sum of every rows (time column) with lower 'rownr'
the result:
rownrtimetimesum
1100
21010
31020
41030
51040
61050
71060
81070
current table looks like this:
rownrtime
110
210
310
410
510
610
710
810
and i want the 'timesum' column to be in format hhhh:mm
current format is rownr=int, time=datetime
thx for all help
//Mr
Hello
Probably a very simple problem, but im stumped. I have a table which gives the start-time and end-time of an employees work day. I want to create a view which contains a line of data for each 5 minute period worked. Please help.
I would like something I can do inline eg:
select convert(blahdatatype,a.datefield) as smallerdatefield
from
a
where a.datefield is a datetime. If a contains rows like:
datefield
---------------------
01/20/2005 22:17:23
08/23/2001 03:04:15
...
Then the SQL above returns:
smallerdatefield
---------------------
01/20/2005 00:00:00
08/23/2001 00:00:00
...
Is there any non-obnoxious way (eg: without have to result to using datepart a million times) to do this? For instance, Oracle provides a function called Trunc which does it, but I cannot find an SQL Server equivalent. Anyone? TIA!!!
I have collected perfmon data that is in every 15 seconds. I need to run a query that will only retrun rows that are 5 minutes from the last row starting at a specific date/time.
Here is the current query
Select
DisplayString,
MachineName,
ObjectName,
CounterName,
InstanceName,
[Code] ......
"CounterDateTime" is in every 15 seconds. So starting from '2012-03-02 11:59:00' I need only rows for every 5 minutes after that.
Hello all,
I have the following very simple SQL Query:
SELECT TOP (100) AutoNumber, Date, ZNT, SAT, RAT, RH
FROM HV_Values
ORDER BY Date ASC
This shows the top 100 entries for a table (where there is a date entry every 5 minutes). Here's five sample records:
1 12/4/2006 4:12:11 PM 67.13 70.50 71.56 8.23
2 12/4/2006 4:17:11 PM 67.13 70.50 71.56 8.33
3 12/4/2006 4:22:11 PM 67.19 70.69 71.69 8.19
4 12/4/2006 4:27:11 PM 67.19 70.63 71.69 8.18
5 12/4/2006 4:32:11 PM 67.19 70.69 71.75 8.05
What I'd like to do with the sample query above is take an AVG for one hour for the values ZNT, SAT, RAT, RH...like I stated the records are every five minutes in the table, I'd like to create 60 minute AVGs.
Any ideas or sample queries I can work with?
Thank you very much! gad1
hi, i need to synchronize a table from a database to two tables on a different database. I was thinking in a stored procedure to do it and create a job that execute it every minute.
I don't know if this is the right method... maybe it can be a bad decision for the server performance.
Anyone can help me to do that?
Using SQL Server 2008, we would like propose mirroring between two servers of a critical database. Since we initiate, may require to clarify on its purpose and also required changes from application end.Any changes required from OS Level? (I believe both servers IP or Host name should be added in host entries. Mirroring ports should be allowed/open including Principal and mirror server IP Addresses): Windows Team.Any changes required from Application? (Instance name, authentication: user name and its password should be added in web config files): Application Team.Any changes required from Network Team?Also for mirroring both the principal and mirror servers should be with same version, does it only mean SQL Server 2008 versions are enough or does it also mean to say build numbers 10.00.4000 should also be same.URL....
View 5 Replies View RelatedI need to set up asyncronous data replication across two clustered instances of SQL 2012 across 2 Datacenters. Both the datacenters have a common domain however the vlans are different. There are only 3 small databases on the primary instance.
any issue in setting up mirroring in this case as vlans are different.
Operating system is Windows 2012.
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
Just wondering if anyone knew if it was possible to create a SQL Server agent job that ran once every 30 seconds. I can't enter a value below 1 minute when editing the job schedule in Enterprise Manager.
Alternatively, I can create duplicate stored procedures and set one to run on the minute and one on the half minute. Thought there might be a better alternative to this though and I'll always have to be remembering to makes changes to both sprocs.
Thanks!
I'm trying to get the difference between the two times in minutes with the seconds rounded up or down
As an example the difference in the times:
1900-01-01 09:27:49.000, 1900-01-01 09:32:28.000 is 279 seconds which is 4.65 minutes,
using
select
cast(round(datediff(second, convert(datetime, '1900-01-01 09:27:49.000'), convert(datetime, '1900-01-01 09:32:28.000')) / 60, 2) as numeric(18,2))
I am receiving the value 4.00 instead of 5 which I would like 4.65 to round to. How can I get the difference in seconds to round to the minute ?
SQL is generating dump every 1 min with error
EXCEPTION_ACCESS_VIOLATION reading address 0000000000000020 at
Server is running SP2 CU2.
I have a situation where I have table with over a billion records and needs to be scrubbed. Table does have a field with date time timestamp. I have been deleting rows from the table using the script below which basically provides me delete statements by date for records older than 90 days.
But now on each day row count is over 30 million rows and it takes forever to delete by date and transaction log becomes humongous.
So I would like to scrub it in 5 minute intervals instead of daily for records older than 90 days. Even in 5 minute intervals the record count tends to be around a million. This will keep the delete slice small enough to not a gigantic transaction log.
declare @startdate Datetime
declare @enddate Datetime
set @startdate = getdate()-480
set @enddate = getdate()-90
--set @vStart = select convert(varchar,@startdate, 102)
print @startdate
print @enddate
WHILE (@startdate < @enddate)
BEGIN
print 'delete from vending where DetectedDate < ''' + CONVERT(varchar(10), @startdate, 101) +''''
set @startdate = @startdate+1
END
I am hoping to modify the script above to produce a script with statements like this for a window between last 90 and 120 days:
delete from vending where DetectedDate <'6/15/2015 8:25:00 PM'
go
delete from vending where DetectedDate <'6/15/2015 8:30:00 PM'
go
delete from vending where DetectedDate <'6/15/2015 8:35:00 PM'
go
Just wondering what is the best time to ensure that we only return data when the datetime field is the same when compared between two datetimes within a minute difference.
As in the following should return the data:
'2015-04-09 09:00:20' compared to '2015-04-09 09:00:50'
And the following should not return the data:
'2015-04-09 09:01:20' compared to '2015-04-09 09:00:50'
The problem, is that I'm merging data from three different result sets, which they all have data for every minute, however, the timestamp can be different by seconds or milliseconds.
So, I'm only interested to return the data when the two fields that I'm comparing are equal within a minute. I need to ignore seconds and milliseconds.
I'm trying to create a query to return Open, Close, Max and Min Price for each 1 minute interval. Source data has two fields - Price, and Datestamp at 5 second intervals.
I can calculate the Max and Min (below) and set the datestamp to the middle of the interval, but get stuck on how to also return the Open and Close price for each interval.
SELECT MAX(price) AS MaxPrice, MIN(price) AS MinPrice,
DATEADD(ss, 30, DATEADD(n,DATEDIFF n, '1/1/2006', DateStamp),'1/1/2006')) AS DateStamp
FROM MasterData
GROUP BY DATEDIFF(n, '1/1/2006',DateStamp)
Any ideas?
thanks in advance.
Right now the database I am working with is storing time inan Integer data type and is storing the time value in seconds.The application does not allow entering seconds. It acceptsminutes and hours.I have a report where it is doing:SELECT SUM(TIMEENTERED)and the SUM is *blowing* up as the SUM is reachingthe BIGINT range.I can fix the problem by changing all codes to:SELECT SUM(CAST(TIMEENTERED AS BIGINT))But now that I ran into this problem I want to find outif storing the time in seconds using INTEGER datatype is the best solution?I've been searching this newsgroup and other placesthe whole day. I even ran into my own three year oldpost. Three years ago my problem was data migrationrelated and now it is more of performance related thananything else.http://groups.google.com/groups?as_...y=2006&safe=offI could not find this specific topic in SQL books likeSQL for Smarties 2005 by Joe Celko (very good stuff ontemporal topics but nothing specific to my question),or Inside SQL Server 2000.Which data type would be ideal and why?smalldatetime?integer?decimal?float?The type of operations that are being done in the databaseare:1- Entering time in hours on work done on a taskFor the data entry part, the application accepts2.5 as 2 and a half hours and it is storing2.5 * 3600 = 9000 seconds.It also accepts entering 2:30 as 2 hours and30 minutes and again storing 9000 seconds.I even saw a page where you can enter clocktime: I worked from 9:30AM to 12:45PMas an exampleWhen i checked the underlying table(s) I sawthat the ENTEREDTIME is always the durationin seconds. So the data entry can either be2.5 hours where ENTEREDTIME = 9000 secondsor9:00AM to 11:30AMwhere STARTDATE is today's date for examplestored as 1/27/2005 09:00AMand where ENTEREDTIME = 9000 seconds2- All kinds of reports showing total time in hoursfor example: Project1 = 18.5 hoursThe code in the SP are all like:SUM(ENTEREDTIME) / CAST(3600 AS DECIMAL(6,2))AS TOTALTIME3- I am sure a lot of other arithmetic calculations arebeing done with this ENTEREDTIME field.What would be the best way to store hours/minutesbased on how we are using Time in the database?Either I will stick with Integer but store in minutestime instead of calculating in seconds and most likelyupdate all the SUM(ENTEREDTIME) toSUM(CAST(ENTEREDTIME AS BIGINT))or I will switch to storing in decimal/float andmaybe avoid doing :SUM(ENTEREDTIME) / CAST(3600 AS DECIMAL(6,2))AS TOTALTIMEsince the ENTEREDTIME would already be storedin hours time.or I will use DATETIME since in the cases ofI worked from 9:00AM to 11:30AMI have to have a separate column to store the date also.I am a little confused I am hoping I will get some helpfrom you and maybe if I can't find the best solution, atleast eliminate the NOT so good ones I am thinking of.Thank you
View 1 Replies View RelatedI am having some issues converting time to decimal from one of my column which display it as
2014-07- 08:16:31.000 (datetimecreated)