Blocks And Deadlocks
Jul 25, 2002I know blocks and Deadlocks are different but how related are they? Seems like when I get reports of deadlocks I always have blocks and the blocks grow as time passes.
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Lock Blocks
May 24, 2001Hi, Everyone
Can anyone tell me how to find who blocks the table or record, because the Lock Blocks is extremly high in the performance monitor.
Regards,
Blocks On SQL Server
Nov 26, 2001I need to test a block-alert and would like to test this by causing a block on our test server. Anyone have a script handy that will do this?
View 5 Replies View RelatedLogging Blocks
Apr 23, 2008I would like to log blocks to see what causes it.
One hack of a way to do it is to run code similar to that which populates the blk column in sp_who; on a job every 5 seconds. It would store the results of code similar to the sp_who output whenever any of the rows has a value greater than zero in the blk column.
This way, I can see what was going on at the time there was a problem.
Does anyone have a better strategy for this?
History Blocks?
Mar 21, 2007Is it possiable to go through the history blocks and change field names?...ie
I want to change "PS001_Pump1.RT_Daily" to "PS001_Pump1.Runtime_Daily"
so i can access the historical data thru the new tagname.
If so , is this using an udpate query?
Sending Mail In Blocks
Jun 12, 2007I need to find a way to send mail in blocks of 100 and 500 at intervals of 120 seconds. Does anyone know of any code for this?
Thanks!
Etymon
Xp_sendmail Blocks Trigger ?
Jul 20, 2005Dear All,we are running SQL2000 Sever and make use of the xp_sendmail.For any reason the mail service can run into problems and it lookslike that the statemnt below gets not finished.EXEC @Status = master..xp_sendmail @recipients=@TOList,@copy_recipients=@CCList,@subject='the subject goeshere',@message=@MailText,@no_output=TRUEUnfortunately the statement is in an update trigger and hence itblocks the table for any further updates.My questions are:Can I achieve a kind of timeout check in my trigger in order to bypassthexp_sendmail call ?In general, sending mail in a trigger may not be a good idea.How can this be solved better ?Any hint is highly welcomeRegardsRolf
View 6 Replies View RelatedEnd Conversation Causing Blocks
Apr 9, 2007Hi
I was trying to clean up some conversation in Service Broker and caused alot of blocking that I seem to unable to kill. there was 1 conversation that I was not able to end, so I wanted to restart sql service, But I can't even restart the SQL service. I get the following in Event Viewer
Timeout occurred while waiting for latch: class 'SERVICE_BROKER_TRANSMISSION_INIT', id 00000001A2B03540, type 2, Task 0x0000000000C2EDA8 : 0, waittime 5400, flags 0xa, owning task 0x00000002DEBCA5C8. Continuing to wait.
Has anyone come across this
thanks
Paul
Using Try Catch Blocks In Stored Procedure
Mar 26, 2008The following two stored procedures works fine. I need to add try catch blocks in the stored procedures. How to do it? Pls modify my stored procedure with try and catch blocks and in the catch block i need to call the Procedure called ErrorMsg which contains error severity.
Procedure 1------------set ANSI_NULLS ONset QUOTED_IDENTIFIER ONgo
-- =============================================-- Author: C.R.P. RAJAN-- Create date: March 26, 2008-- Description: PROCEDURE FOR IMPLEMENTING SOFT PURGE-- =============================================ALTER PROCEDURE [dbo].[SP_SOFTPURGE] @POID INTASBEGINUPDATE POMASTER SET FLAG=1 WHERE POID=@POIDSELECT * FROM POMASTER WHERE FLAG=0END
Procedure 2-----------set ANSI_NULLS ONset QUOTED_IDENTIFIER ONgo
-- =============================================-- Author: C.R.P. RAJAN-- Create date: March 26, 2008-- Description: Stored Procedure for Hard Purge-- =============================================ALTER PROCEDURE [dbo].[SP_HARDPURGE] @PoId INTAS
BEGIN TRAN INSERT INTO ARCHIVE SELECT * FROM POMASTER WHERE POID = @POID IF @@ERROR != 0 BEGIN ROLLBACK TRAN RETURN END
DELETE FROM POMASTER WHERE POID = @POID IF @@ERROR != 0 BEGIN ROLLBACK TRAN RETURN ENDCOMMIT TRANSELECT * FROM POMASTER
Tempdb Is Locked And Blocks Other Users
Oct 18, 1999When I am running reports on SQL Server 6.5 database which involves creation of temp tables, whole tempdb is locked. All other users are blocked,
The reports involve queries which fetch data into temporary tables, as,
SELECT c1 , c2, c3 ...
INTO #tmp1
FROM T1
WHERE C1 = xxx
AND .........
When any of these queries are run, it blocks all other operations using TEMPDB, like creation of temporary tables or queries using sorts etc.
It appears that the query locks the system tables (sysobjects, syscolumns) in TEMPDB.
However, the above query works fine if it is constructed as,
CREATE TABLE #tmp1 (a1 ..., a2 ...., a3 ..... )
INSERT INTO #tmp1
SELECT (c1, c2, c3)
FROM T1
WHERE c1 = xxx
AND .........
Could someone please tell me what actually is happening in the first scenario. Is there a way avoid the blocking of TEMPDB usage other than the workaround mentioned above (which means I have to change all my queries) ?
Thanks
Nishant
Record Groups In Blocks Via A Query
Jun 11, 2007I'm trying to place records into groups of 100, so I need a query that will return records but not based upon an autonumber type field. For instance, if I had a set of records that had been sequentially numbered (by autonumber) with IDs to greater than 3,600 but there were actually only 300 IDs remaining ranging from 1 to 3600 (say the others were deleted), then I would want to use a query to make three groups of 100 of the remaining IDs.
I can use SELECT TOP 100 for the first 100 records. How do I get subsequent groups of 100?
It's probably obvious and I am thinking too hard.
One Ms Sql Server 2000 Instance Blocks The Other (thru A Dts-job)
Jul 23, 2005Hello,we use two instances of the ms sql server 2000 (Version: 8.00.760) on a4 processor windows 2000 (sp 4) machine.A dts-packet on one instance completly blocks the work on the otherinstance. Both instances have 2 dedicated processors. The twoprocessors of the blocked instance are in idle states.How is this possible? Has someone had the same behavior of the sqlserver and found a solution for this problem?Thanks in advance for answersJürgen Simonsen
View 1 Replies View RelatedBest Method For Moving Blocks Of Records From One Db To Another?
Feb 6, 2008I wanted to set up a mechanism that would transfer blocks of records (a few dozen to in rare cases a few thousand), with slight modification, from one database to another. It's a sort of custom partial archiving process that would be triggered from a web-based admin application. Records in the target db would be identical except:
-- the primary key in the source table, an identity field, would be just an integer in the target table
-- the target table has an extra field, an integer batch ID supplied by the web application that triggers the process
It's a simple, if not efficient matter to do it within the web application: query the source table, suck the records into memory, and insert them one by one into the target db. This will be an infrequent process which can be done at off-hours, so a bit of inefficiency is not the end of the world. But I wondered if there is a more sensible, orthodox approach:
-- Could this process be done, and done efficiently, as a stored procedure with the batch ID passed as a parameter?
-- Is there any way to do a bulk insert from a recordset or array in memory using ADO and SQL? And if so, is that better than inserting records one by one?
Advice on the best general approach would be appreciated, and I will try to figure out the details.
SSIS Package BLOCKS At Opening.
Mar 21, 2006Hallo,
I'am relatively new to SSIS-programming and experiencing a serious problem with a package (6618 KB large) containing 5 dataflows. These dataflows all start from a datareader-origin and flow trough multiple transformations. While editing the fifth dataflow the developmentenvironment suddenly became unworkably slow. After any modification made to the dataflow it takes several minutes before I can continue editing. Meanwhile in the task manager the process devenv takes a very large portion (50 to 100%) of CPU.
Building the package,shutting down SSIS and even rebooting the PC don't make any difference. When you close the package ands reopen it, this takes at least 10 minutes.
We work with Microsoft SQL Server Integration Services Designer
Version 9.00.1399.00.
Does anyone know if there is a limit to the number of transformations in a flow or the size of a package? Could that be the problem?
Before this problem occured I was multiplying transformations by copying ,renaming and altering them within a dataflow. Could SSIS have some problem with that?
Any suggestion for solving this problem, other than chucking it all away an restarting, will be gratefully accepted.
With kind regards,
Paul Baudouin
Format Database Disk With 64K Blocks NTFS
Jul 14, 2004Hi:
Somebody tellme that with a format of my database disk with 64K blocks NTFS, i can have better performance, is that true ? there is any problem in SQL with this block size ?
Splitting Script Into Small Blocks And Using UNION ALL
Jun 9, 2014We are working for a long time on optimizing this script, and latest modification I did was splitting script into small blocks and using UNION ALL. This supported a lot but still it takes some 45 mins on prod environment. I'm not able to find anything more in this script to optimize.
View 9 Replies View RelatedSQL Server 2008 :: Notify Only If There Are Certain Blocks By Certain User
Jun 12, 2015I'm trying to set the query to send email ONLY when it returns records of blocks and i cant seem to get this going.
declare @blocks varchar(max)
set @blocks = (SELECT spid,
sp.[status],
loginame [Login],
hostname,
blocked BlkBy,
sd.name DBName,
[Code] ....
Reusable Blocks Of Code In Stored Procedures
Apr 15, 2008I have several stored procedures with a similar query. The SELECT clauses are identical, but the FROM and WHERE clauses are different.
Since the SELECT clause is long and complicated (and often changes), I want to place the SELECT clause in a separate file and then have the stored procedures include the block of text for the SELECT clause when they compile.
Is this possible? Looking through the docs and searching online, I don't see any way to do this.
Blocks Of Time - Log Number Of Visits From Clients
Oct 30, 2014I have the following SQL that I want to log the number of visits from clients. a session is a block of time, for example, any time between 9-12 is a morning sessions, 12-5 is an afternoon session etc. I need to count the number of sessions in a month not the appointments within the session, make sense?
select sr.resourceid, st.TimeStart, datename(m,sr.scheduledate) as sesmonth, datename(yy,sr.scheduledate) as year,
(CASE
WHEN DATEPART(hour, st.TimeStart) BETWEEN 0 AND 12 THEN 'MORNING SESSION'
WHEN DATEPART(hour, st.TimeStart) BETWEEN 12 AND 17 THEN 'AFTERNOON SESSION'
WHEN DATEPART(hour, st.TimeStart) BETWEEN 17 AND 24 THEN 'EVENING SESSION'
[Code] ....
Convert Repeating Blocks Of Columns Into Rows?
Feb 17, 2015writing SQL code to convert blocks of columns into rows.
Example,
Id A1 A2 B1 B2
1 1 1 1 1
2 2 2 2 2
3 3 3 3 3
into
Id Group Value
1 A 1
1 A 1
1 B 1
1 B 1
2 A 2
2 A 2
2 B 2
2 B 2
Delete Statement Times Out And Blocks Reads
Aug 21, 2007Hi. Periodically I need to run a delete statement that deletes old data. The problem is that this can timeout using ODBC (via the CDatabase and CRecordSet classes in legacy code). Also, while its running the delete, the table its operating on is locked and my application can't continue to run and operate on rows not affected by the delete.
Are there any workarounds for this? Can the timeout be set in the connect string?
Thanks,
Brian
Data Application Blocks For Windows Mobile
Feb 5, 2006I've read that microsoft.applicationblocks.data for .net v2 can't be deployed to a mobile app, and my experience bears that out. So I 'm wondering if there are application blocks for windows mobile 5 that would know how to both talk to sql server mobile and sql server 2005. I see OpenNetCF has a port but as far as I can tell, they only address sql server mobile and not talking to a sql server 2005 remote database. I can use the OpenNetCF version for my sql server mobile requirements, but I'm hoping there is an encapsulation of sqlclient calls for communication with my server db.
thanks
braden
Best Method To Move Blocks Of Records From One Database To Another
Feb 7, 2008I wanted to set up a mechanism that would transfer blocks of records (a few dozen to in rare cases a few thousand), with slight modification, from one database to another. It's a sort of custom partial archiving process that would be triggered from a web-based admin application in plain old ASP (not .net alas). Records in the target db would be identical except:
-- the primary key in the source table, an identity field, would be just an integer in the target table
-- the target table has an extra field, an integer batch ID supplied by the web application that triggers the process
It's a simple, if not efficient matter to do it within the web application: query the source table, suck the records into memory, and insert them one by one into the target db. This will be an infrequent process which can be done at off-hours, so a bit of inefficiency is not the end of the world. But I wondered if there is a more sensible, orthodox approach:
-- Could this process be done, and done efficiently, as a stored procedure with the batch ID passed as a parameter?
-- Is there any way to do a bulk insert from a recordset or array in memory using plain ASP, ADO and SQL? And if so, is that better than inserting records one by one?
I realize that the ASP.NET tableadapter and dataset features might provide a good solution, but in the short run I can't rewrite the whole application. Advice on the best general approach from an ASP-ADO platform would be appreciated, and I will try to figure out the details.
Problem With Nested Try Catch Blocks In SQL 2005
May 23, 2006hi All,
Code:
begin try
begin transaction trans1
//some transaction
begin try
begin transaction trans2
//some transaction
//Raise Error
//commit transaction trans2
end try
begin catch
//Raise error
end catch
//some transaction
//commit transaction trans1
end try
begin catch
//Rollback trans1
end catch]
In the above code when an error is raised in the transaction trans2 the immediate catch is not invoked where as the outer catch is being invoked. I dont know y?. Can anybody help. Thanx
SQL Server 2012 :: Display Data In Blocks (Column Name)
Jan 29, 2014I want to display data in block. Below is the Create,Insert Script and format of desired output.
CREATE TABLE [dbo].[Test_AA](
[CounterpartID] [varchar](2000) NULL,
[CounterpartName] [varchar](2000) NULL,
[SATName] [varchar](2000) NULL,
[NameOfBO] [varchar](2000) NULL,
[Code] ....
Result Should be like This :
ID:17388
Name:Scottie Berwick
SATName:Scottie Berwick
NameOfBO:
SATAccountNumber:
[Code] ....
Blocks Hangup Database When Inserting In 1 Specific Table
Jul 20, 2005Hi,We use a database with about 40 related tables. Some tables contain asmuch as 30.000 records. We use Access97 as an interface to thedatabase. Now recently we have the problem that when we want to inserta row in one specific table (alwasy the same) the database makesblocks.Details:- about 10% of the data was inserted using copying from Excel, beforethis action there was no problem, though there is no evidence thatthis causes the problem.- inserting rows via the Query Analyzer works fine, via Access causestrouble.- the tempdb lofile has grown to 48Mb.Has anyone ideas about what is going on and what I can do to solve theproblem?TAV,Jan Willems
View 1 Replies View RelatedTransact SQL :: Counting Blocks Of Time In 15 Minute Chunks
Feb 16, 2012We have data that consists of an employee number, a start time and a finish time, similar to the example below
EMP Â STARTTIME Â Â Â Â Â Â Â Â Â Â ENDTIME
00001 10-Feb-2012 06:00:00 10-Feb-2012 10:00:00
00002 10-Feb-2012 07:15:00 10-Feb-2012 10:00:00
00003 10-Feb-2012 08:00:00 10-Feb-2012 10:00:00
I am trying to come up with a procedure in SQL that will give me each 15 minute block throughout the day and a count of how many employees are expected to be at work at the start of that 15 minute block. So, given the example above I would like to return
10-Feb-2012 00:00:00Â Â Â Â 0
10-Feb-2012 00:15:00Â Â Â Â 0
10-Feb-2012 06:00:00Â Â Â Â 1
10-Feb-2012 06:15:00Â Â Â Â 1
[code]....
I'm not too worried if the date part is not included in the result as this could be determined elsewhere, but how can I do this grouping/counting?
SQL Server 2008 :: Partition Sliding Window Causing Loads Of Blocks
Oct 29, 2015We have a massive database with an almost massive amount of traffic to and from it.
I've been requested to implement a sliding window partitioning with 2 partitions an active and passive 1,I managed to test this on a very small testbed last month.
I currently moved 97k table on to the partition function leaving me another 26 k to go
I'm using the following stored procedure to implement the sliding window
CREATE PROCEDURE [dbo].[ManageFactSlidingWindow](@pFunction nvarchar(max),@pSchema nvarchar(max),@FG nvarchar(max),@moveDays int)
/*****************************************************************************
PROCEDURE NAME: [ManageFactSlidingWindow]
AUTHOR: Arshad Ali
CREATED: 02/24/2013
DESCRIPTION: This stored procedure manages sliding window for the partitioned table
VERSION HISTORY:
DATE EMAIL Company DESCRIPTION
[Code] .....
When I try to move the partition even a single day I get loads of locks.
Deadlocks
Mar 17, 2005Our system is reasonably complex with a lot of non-trivial stored procedures. As the load on our DB increased we're now getting more and more deadlocks (10 per day or so from about a million stored proc executions).
We try to avoid transactions where we can, and we do attempt to optimse stored procs to steer clear of deadlock conditions, but with the sheer number of stored procedures we can't possibly avoid all deadlock conditions.
One solution I'm considering is to re-run stored procs that failed because of a deadlock. In the .net code we'll run the stored proc, check for a deadlock error and if one happened, wait 100ms and try again.
What do you guys think?
Deadlocks
Aug 13, 2002Hi,
we have a production inviremont that is running for about 10 months. Since a couple of weeks we are having problems with "Deadlocks".
This cant be due to an increase in data size on the tables that are having the issues because these are cleaned in the same transaction that populates them.
These tables are used to store temporary data that the production system needs to calculate the correct price for any given order. This transaction takes between 0.5 to 1 second to commit.
We are running on a dual processor machine with 1 Gb of RAM with SQL Server 7 - sp 3, Windows NT 4 sp 6, Microsoft Transaction Server.
In all our queries and stored procedures we use the optimizer hints (nolock) for select statements and (rowlock) for updates or deletes.
Any help and/or suggestions would be appriciated.
Deadlocks
Dec 17, 1998Is there any way to totally avoid deadlocks. In some critical applications
we have removed transactions entirely, counting on other means to maintain
database consistency. We still get deadlocks in this area. These are mainly
inserts, and the only thing I can think is that updates to the indexes are
causing multiple page locks which result in deadlocks. Is this true?
Will deadlocks be eliminated in 7.0 with row level locking for this situation?
Or will index page splits still cause a possibility of deadlock contention?
Thanks!
ben
DeadLocks
Mar 5, 2001Hi ,
I have a problem with a SP in 6.5. When i try to run a Stored Proc which is a simple select statement dumped into a temp table in a particular database, I lock other users who are tring to log into other databases some in tempdb database. When i try to kill the process the rollback takes almost 45 mins or so..till then no one can log on to the server.
The SP works fine when no one is logged into the Great Plains server. One more thing i observed is that, the SP when run results on a deadlock only when the owner is a user. If the owner is DBO it works fine.
Can anybody throw some light on this.
Thanks in Advance
Siv
DeadLocks
Jul 10, 2002I am getting the following dead lock error message writtent to the Error Log.
How do i interpret this...?
2002-07-10 11:49:52.88 spid3 Node:1
2002-07-10 11:49:52.88 spid3 KEY: 6:1531868524:1 (1e0040209980) CleanCnt:1 Mode: X Flags: 0x0
2002-07-10 11:49:52.88 spid3 Grant List::
2002-07-10 11:49:52.88 spid3 Owner:0x26429de0 Mode: X Flg:0x0 Ref:2 Life:02000000 SPID:62 ECID:0
2002-07-10 11:49:52.88 spid3 SPID: 62 ECID: 0 Statement Type: INSERT Line #: 67
2002-07-10 11:49:52.88 spid3 Input Buf: RPC Event: sp_Save;1
2002-07-10 11:49:52.88 spid3 Requested By:
2002-07-10 11:49:52.88 spid3 ResType:LockOwner Stype:'OR' Mode: Range-S-S SPID:58 ECID:0 Ec:(0x29f534f8) Value:0x2649f0c0 Cost:(0/0)
2002-07-10 11:49:52.88 spid3
2002-07-10 11:49:52.88 spid3 Node:2
2002-07-10 11:49:52.88 spid3 KEY: 6:1695345104:1 (ffffffffffff) CleanCnt:1 Mode: Range-S-U Flags: 0x0
2002-07-10 11:49:52.88 spid3 Grant List::
2002-07-10 11:49:52.88 spid3 Owner:0x26450f20 Mode: Range-S-U Flg:0x0 Ref:1 Life:02000000 SPID:58 ECID:0
2002-07-10 11:49:52.88 spid3 SPID: 58 ECID: 0 Statement Type: INSERT Line #: 250
2002-07-10 11:49:52.88 spid3 Input Buf: RPC Event: sp_IPAQManagerFetchFilterDetail;1
2002-07-10 11:49:52.88 spid3 Requested By:
2002-07-10 11:49:52.88 spid3 ResType:LockOwner Stype:'OR' Mode: Range-Insert-Null SPID:62 ECID:0 Ec:(0x3bb5f4f8) Value:0x2649e040 Cost:(0/2340)
2002-07-10 11:49:52.88 spid3 Victim Resource Owner:
2002-07-10 11:49:52.88 spid3 ResType:LockOwner Stype:'OR' Mode: Range-S-S SPID:58 ECID:0 Ec:(0x29f534f8) Value:0x2649f0c0 Cost:(0/0)