SQL Server 2014 :: Query Causing Blocking / Locks Table For 1000 Seconds?
Feb 11, 2015
I have a sql snippet from a 3rd party application that will not complete its transaction. The SELECT statement executes but does not finish. Instead the statement just sits in AWAITING COMMAND for 1000 seconds then dies, thus killing the UPDATE statement that is supposed to follow.
The CROSS JOIN and CROSS APPLY seem suspect.
(
@p0 DATETIME,
@p1 INT,
@p2 INT,
@p3 NVARCHAR(4000),
@p4 INT,
[code]....
View 9 Replies
ADVERTISEMENT
Oct 1, 2015
I just ran into an issue with cascading locks due to a SPID on one of my production servers. When researching the lock, I noticed that there was no sql text. SP_Who 2, nor the following query captured anything,
SELECT sqltext.TEXT
, sqlplan.query_plan
, req.session_id
, req.status
, req.command
[Code] ....
I spoke to the user causing the lock and he ran into a visual basic error when this occurred and didn't close out that window. So my guess is that it's due to an uncommitted transaction. However, shouldn't I still see something if that was the case?
View 4 Replies
View Related
Apr 8, 2015
I need to do some operations on a table when any user dont work with it.How do i do it?
Do i lock the table? and is it possible?(I dont want to deny permission from a user because cause error)
Can i do it with a open transaction ?
View 4 Replies
View Related
Oct 1, 2007
We have a web-based third-party application that has both background processes and user activity requests running in the same database (SQL Server 2005 SP2). The problem is that a background process will start a long-running transaction and hold an exclusive lock on a few rows in a given table (a small table, <100 rows). The web clients need to scan this same table, but when their "select *" statements get to those locked row(s), the web client queries stall waiting for that exclusive lock to be released. This effectively brings the entire web front end to a halt because all clients must hit this table for each user action. I realize that this is the classic lock condition that multiversioning databases like Oracle, PostgreSQL, SQL Server Compact Edition, and other databases do not suffer because they don't use shared read locks like SQL Server. But since we're on SQL Server for this app, what is the way to get around this problem? Modifying the clients to use WITH (NOLOCK) is not an option... there will be major consistency issues unless the clients run in Read Committed or higher. Any ideas? We could tweak this app if needed. Does SQL Server 2008 introduce multiversioning or at least some mechanism to get around this problem? I did not see it mentioned on the Microsoft site, but maybe I missed it. Thanks in advance.
Austin
View 6 Replies
View Related
Aug 5, 2015
We are migrating our database(s) from ORACLE to SQL. In Oracle we were able to issue a SELECT statement and see all of the locks (Blocking and Non-Blocking) currently in the system. The query also included the Process ID of the process we needed to kill in order to get rid of the lock.
We now need to create the same type of query for Microsoft SQL Server 2012. I have seen postings on different sites saying that this info can be obtained using SP_WHO2 or using the SQL Server Management Studio Activity Monitor's PROCESSES tab, but we are looking for a SELECT statement that will give us similar information.
View 7 Replies
View Related
Apr 8, 2015
I need to do some operations on a table when any user dont work with it.How do i do it?Do i lock the table? and is it possible?
View 8 Replies
View Related
Mar 27, 2001
I am trying to transfer 90 million records/250 bytes row length from oracle 8i to sqlserver 2000
using DTS and it is taking 2 seconds to transfer 1000 records. Is there any way I can transfer 90 million records fast at all. This will take more than 10 hours to transfer it.
Thanks,
Ranjan
View 7 Replies
View Related
Jul 16, 2015
I've got an INSERT that's selecting data from a linked server and attempting to push 10 million rows into the blank table. More or less, it looks like this:
insert into ReceivingTable (
Field1, Field2, Field3, Field4
, Field5, Field6, Field7, Field8
, Field9, Field10, Field11, Field12
, Field13, Field14, Field15
[code]...
The instance of the SQL Server Database Engine cannot obtain a LOCK resource at this time. Rerun your statement when there are fewer active users. Ask the database administrator to check the lock and memory configuration for this instance, or to check for long-running transactions. There are no other active users. I ran it again and monitored the following DMO to watch the growth of locks for that spid:
SELECT request_session_id, COUNT (*) num_locks
-- select *
FROM sys.dm_tran_locks
--where request_session_id = 77
GROUP BY request_session_id
ORDER BY count (*) DESC
The number of locks started small and held for a while around 4-7 locks, but at about 5 minutes in the number of locks held by that spid grew dramatically to more than 8 million before finally erroring again with the same message. Researching, I can't figure out why it's not escalating from row locks to table locks at the appropriate threshold. The threshold in was set to 0 at first (Server Properties > Advanced > Parallelism > Locks). I set it to 5000, and it still didn't seem to work. Rewriting the INSERT to include a WITH (TABLOCK) allows it to finish successfully in testing. My problem is that it's coming out of an ETL with source code that I can't edit. I need to figure out how to force it to escalate to locking the entire table via table or server level settings.
A colleague suggested that installing service packs may take care of it (the client is running SQL Server 2008 R2 (RTM)), but I haven't found anything online to support that theory.
View 9 Replies
View Related
Aug 14, 2015
I have configured an alert like below to track all blocked events in SQL Server across all databases and then kick start a sql job when a blocking happens which inserts data to a table, when there is a blocking in SQL server , i get an email --which is working fine and i am able to track all queries.
but, HOW to get notifications ONLY if BLOCKING IS HAPPENING FOR MORE THAN 30 SECONDS OR 1 MINUTE with out using sp_configure?
---ALERT
USE [msdb]
GO
EXEC msdb.dbo.sp_update_alert @name=N'Blocking Process',
@message_id=0,
@severity=0,
@enabled=1,
[Code] .....
View 4 Replies
View Related
Mar 10, 2003
Recently a production server suffered a critical blocking period and I wanted to know if I could solicit some input. It seems that a stored procedure was in the middle of recompiling while and auto update statistics started. This caused blocking for like an hour on the
single object (stored procedure) that was originally called. The table that the update occurred on and that the
stored procedure is reading form is quite large. It is 2 mil rows and about 140 columns wide. Some info from
sysprocesses is below. The table alone takes up almost 4GB of space, when looking at sp_spaceused. I have some
questions.
1. Can the update statistics for a '_WA%' stats cause
blocking on a table?
2. Does an update stats on an index survive a restart of
SQL server? We tried restarting, but the blocking did not
end.
3. If the stored procedure is running under a compile, can
the server automatically start an update stats and cause
the stored procedure to wait?
4. Can the server automatically start an update stats on
more than one column stats at a time, causing one to be
blocked by the other?
5. We had never seen this issue before going to SQL2K
clustering. Is this something specific to SQL2K and not
SQL7 ?
Thanks for your input.
John Lee
This is the lock info for the blocking processes.
spid dbid ObjId IndId Type Resource Mode Status name
------ ------ ----------- ------ ---- ---------------- -------- ------ -------------------------
142 7 2 1 KEY (6f00035ef42b) S GRANT sysindexes
142 7 2 1 KEY (6f00035ef42b) S GRANT sysindexes
142 7 421576540 0 TAB Sch-S GRANT tJob
142 7 1141579105 0 TAB Sch-S GRANT tPatient_info
142 7 1141579105 0 TAB [UPD-STATS] Sch-M GRANT tPatient_info
142 7 1659921035 0 TAB [COMPILE] X GRANT iDBGetPatInfoRecord
142 7 1659921035 0 TAB Sch-S GRANT iDBGetPatInfoRecord
These are the processes that are being blocked:
spid
------
137
140
Below this is a snapshot of all the SQL processes on the server being blocked.
Save the report and send to the whole database group.
spid kpid blocked waittype waittime lastwaittype waitresource
------ ------ ------- -------- ----------- -------------------------------- -----------------------------
140 4292 142 0x0005 68609 LCK_M_X TAB: 7:1659921035 [[COMPILE]]
137 2576 140 0x0005 64671 LCK_M_X TAB: 7:1659921035 [[COMPILE]]
View 1 Replies
View Related
Aug 12, 2015
I've been put in charge of a SQL server recently and I'm completely new to maintaining SQL. For some reason several clients when they are doing their database processing I get network_io hangs and everything comes to a halt. I have to go in there and manually kill the SPID and everything continues where it left off.
SQL Setup
Server 2012 R2
SQL 2014 SP1
Dell 850
VM running in Hyper-V
50GB RAM
FusionIO Card
10GB Ethernet between clients and server
All workstations are pretty much
Windows 7/8.1
10GB
64+GB of RAM
Several CPUs
SSD and SATA hard drives
It's very hit or miss when this occurs as well, however, it's always the same NETWORK_IO cause.
I've read on the Internet about how the client keep up with what SQL is sending. Could this be poor programming or do I need to investigate my network setup?
View 2 Replies
View Related
Sep 21, 2007
I have a Stored Procedure that has a query in it and it take 0 second and then a stored procedure that takes 16 seconds. From what I can tell they shoul be the same.
It doesn't recompile when i run the stored procedure, I checked that.
View 8 Replies
View Related
Apr 2, 2015
I have a production DB that all of a sudden it seems that any and every insert causes massive locks/blocks.
If I kill the offending spid anther spids pops up with the block/lock.!
View 7 Replies
View Related
May 18, 2015
Over the weekend I decided to give it the ability to do a case sensitive character swap. Updating the code was pretty straight forward but when I was through, I noticed that I was getting Cardinality Estimate warnings that I wasn't getting before.
Anyway, here is some test data and two versions of the executed SQL (the base code is all dynamic and the two code versions are the result of toggling the @MatchCase parameter).
/* ========================================
CREATE TABLE
======================================== */
CREATE TABLE [dbo].[PersonInfoSmall](
[PersonID] [BIGINT] NOT NULL,
[FirstName] [NVARCHAR](50) NOT NULL,
[MiddleName] [NVARCHAR](50) NULL,
[LastName] [NVARCHAR](50) NOT NULL,
[code]....
View 8 Replies
View Related
Sep 23, 2015
I was trying to create stored proc
[code="create procedure dbo.sp_table1
@idint
as
begin
updatetable1
setisarchived = 1,
[Code] ....
But the query was continuously blocking the query below
updatetable1
setisarchived = 1,
modtime = getdate()
whereid = @id
andisarchived = 0
I was not sure, why the create procedure statement is blocking the update statement.
View 1 Replies
View Related
Jun 27, 2014
I am trying to run a UNION ALL query in SQL SERVER 2014 on multiple large CSV files - the result of which i want to get into a table in SQL Server. below is the query which works in MSAccess but not on SQL Server 2014:
SELECT * INTO tbl_ALLCOMBINED FROM OPENROWSET
(
'Microsoft.JET.OLEDB.4.0' , 'Text;Database=D:DownloadsCSV;HDR=YES',
'SELECT t.*, (substring(t.[week],3,4))*1 as iYEAR,
''SPAIN'' as [sCOUNTRY], ''EURO'' as [sCHAR],
[Code] ....
What i need is:
1] to create the resultant tbl_ALLCOMBINED table
2] transform this table using PIVOT command with following transformation as shown below:
PAGEFIELD: set on Level = 'Item'
COLUMNFIELD: Sale_Week (showing 1 to 52 numbers for columns)
ROWFIELD: sCOUNTRY, sCHAR, CATEGORY, MANUFACTURER, BRAND, DESCRIPTION, EAN (in this order)
DATAFIELD: 'Sale Value with Innovation'
3] Can the transformed form show columnfields >255 columns i.e. if i want to show all KPI values in datafield?
P.S: the CSV's contain the same number of columns and datatype but the columns are >100, so i dont think it will be feasible to use a stored proc to create a table specifying that number of columns.
View 9 Replies
View Related
Feb 18, 2015
I have three tables A, B, C respectively. Table C is used to map table A and B. Three tables are below:
Table A:
Table B:
Table C:
So what query do I need write to have table like below?
Table D
View 7 Replies
View Related
Jul 19, 2015
writing a cross join query with one table:
Cities(City_name, X_coordinate, Y_coordinate)
the result should be all combinations without reverse column returns
SELECT * FROM [dbo].[Cities] as P1
Cross JOIN [dbo].[cities] as p2
where (p1.City_name != p2.City_name) and ???
for example if there are three Cities as A,B,C the result should be: A->B, A->C, B->C (without the returns B->A, C->A, C->B)
View 8 Replies
View Related
Jul 23, 2005
Hi,I have successfully set and used a linked server to query ADSI.Since this question also concerns MSSQLServer, I've cross posted it --I hope this is not a breach of etiquette.I have successly created a view based on the linked server.Unfortunately, it only shows 1000 records, and there does not seem tobe any way to set the Page Size.I found the following:http://support.microsoft.com/defaul...kb;en-us;243281Which seems to imply that the default can be set by changing registrykey: "HKEY_CURRENT_USERSoftwarePoliciesMicrosoftWind owsDirectoryUI"I have set this key, and also set it for the user account under whichMSSQLServer runs. The value persists after a reboot. The Domain Grouppolicy sets the default to 15000.This behaviour is not restricted to the linked server. If I use thescript found here:http://hacks.oreilly.com/pub/h/1121 I can access morethan 1000 records, but only if I set the "Page Size" property. If Icomment it out to let the default hold, it is 1000.It must be settable SOMEWHERE or the whole linked server thing is ofvery limited use.At present, the best solution I've been able to come up with is to usethe above script modified to run as a DTS package. Yuck.TIA,BM
View 2 Replies
View Related
Jul 19, 2015
Im trying to upload 1000 txt files into one table in SQL. I'm using the following query, to upload one txt file at a time:
bulk insert [dbo].AAA_2013_2015
from 'dataserverSQL Data FilesSQL_EMELIZFC x Bloque Detallada201308 Detalle FacturasFACT_BLOQ_AGO13 (4).txt'
with (firstrow = 2,
lastrow = ???,
fieldterminator = ';',
rowterminator = '0x0A')
I'm trying that the query skip the last row because gives me the following error:
Msg 4866, Level 16, State 1, Line 1
The bulk load failed. The column is too long in the data file for row 1, column 17. Verify that the field terminator and row terminator are specified correctly.
Msg 7399, Level 16, State 1, Line 1
The OLE DB provider "BULK" for linked server "(null)" reported an error. The provider did not give any information about the error.
Msg 7330, Level 16, State 2, Line 1
Cannot fetch a row from OLE DB provider "BULK" for linked server "(null)".
know a command to skip the last row, something like lastrow= all-1...or something like that.
I also executed using MAXERRORS command...like this:
bulk insert [dbo].AAA_2013_2015
from 'dataserverSQL Data FilesSQL_EMELIZFC x Bloque Detallada201308 Detalle FacturasFACT_BLOQ_AGO13 (15).txt'
with (firstrow = 2,
fieldterminator = ';',
MAXERRORS = max_errors,
rowterminator = '0x0A')
does not recognize MAXERRORS command, also tried to put a number of error instead of max_errors.
View 0 Replies
View Related
Jan 14, 2005
Hello all,
Thought I would post here in case anybody can give some information.
Here is the background information:
I have 2 tables (stores and sales) from the Pubs database in Sql Server 2000 copied down to a SQL Server CE database. There is no foreign key/primary key relationship between the 2 tables in the CE database.
Here are the update queries that cause the error:
UPDATE st
SET st.zip = 66668
FROM stores st
INNER JOIN sales sa ON st.stor_id = sa.stor_id
AND st.stor_id = 6380
Update stores SET stores.zip = 55555
FROM sales, stores
WHERE stores.stor_id = 6380
AND stores.stor_id = sales.stor_id
Here is the error message that is generated when I run the query (Param 0 and Param 1 change according to what column and line the FROM clause is in):
Error: 0x80040e14 DB_E_ERRORSINCOMMAND
Native Error: (25501)
Description: There was an error parsing the query. [Token line number,Token line offset,,Token in error,,]
Interface defining error: IID_ICommand
Param. 0: 2
Param. 1: 1
Param. 2: 0
Param. 3: FROM
Param. 4:
Param. 5:
I ran the 2 queries in SQL Query Analyzer in SQL Server 2000 and they worked just fine. I also created 2 new tables (stores1 and sales1) in SQL Server 2000 using the Select Into clause. The new tables were created from the sales table and stores table in the Pubs database. The new tables had no foreign key/primary key relationship.
I ran the queries again in Query Analyzer against the new tables and the queries produced no errors.
Any suggestions?
Thank you,
Aaron B
View 1 Replies
View Related
May 1, 2015
We have a SQL Server 2008R2 system that has heavy usage to one specific table. I have tuned basically all I can as far as making sure SQL Statements are using good indexes. From time to time a group of folks will log into Mgt Studio and run SQL Statements like this, leave the query open and once in a while it will cause blocking to other SQL running our online system
The query is like this: select ID,* from tablename with (nolock) where ID like 'MSPRYy%'
The results come back within less than 1 second. However, they leave this window open which is what causes this to be a HEAD BLOCKER and blocks other SQL Statements from running.
View 6 Replies
View Related
Mar 4, 2015
I see some time email say blocking took place and but it get resolved itself. how to find the history of batch/query which blocked another SPID?
View 3 Replies
View Related
Feb 15, 2008
I was wondering if it is possible to have a DB table with 1000 columns?
The other way is of course to break these columns into 1000 rows and an ID which tells what exactly does it relate to.
I want to know the pros and cons of having 1000 columns/rows for one set of related data.
The reason to need 1000 columns in the first place is that there are about 1000 questions in a set whose answers need to be saved for one session (hence all should go together).
Can anybody shed some light on it? Has anybody tried something so crazy before?
View 1 Replies
View Related
Jul 20, 2005
Is there a way to change the Open table - Return Top... -1000 defaultto something like 10. It should return only 10 by default? Any registrykeys?
View 1 Replies
View Related
May 8, 2015
How to write a query that can insert over 1000,0000 dummy records in the fastest way? My current query is
DECLARE @d DateTIme = GETDATE()
DECLARE @c INT = 1
WHILE @c <= 5 BEGIN
INSERT INTO MyTable VALUES (NEWID(),'PREFIX' + RIGHT('0000000000'+ (CAST(@c AS VARCHAR)), 10), DATEADD(MINUTE,@c,@d), FLOOR(RAND()*3), FLOOR(RAND()*2), 'INFO')
SET @c = @c + 1
END
View 7 Replies
View Related
Jul 23, 2005
Hi all.If I've got a query which has a field with seconds in it... how will I usethe Convert function to get my field converted to the format: HH:MM:SS ?The field with the seconds in is called: "Diff"Thanks alotRudi
View 2 Replies
View Related
Jul 23, 2005
Hi.We need to create a view of our active directory users (we have 2500).I found out that there is max page size of 1000, so we cannot get moredata.Anyone found a solution to that problem?Thanks
View 1 Replies
View Related
Aug 10, 2007
It seems when I run the query with the set staticts IO on then statistic reports back with the 'work table', and the query takes 30+ sec. if the worktable is ommited(whatever the reason?) the query take less 1 sec.
Here is my take, I believe work table is created in tempdb...and if not then whole query is using the cached page, am I right?
if I am right then the theory is, if I increase the (via sp_configure) server min memory setting and min query memory, the query ought use the cached page and return in less 1 sec. (specially there is absolutely no one but me on the server), so far I can't make it go faster...what setting am I missing to make it run faster?
Another question is if the query can not avoid but use the tempdb, is it going to always be 30 sec+ time? why is tempdb involvement make it go so much slower?
Thanks in for you help in advance
View 1 Replies
View Related
Jul 20, 2005
Hi,Currently we're a building a metadatadriven datawarehouse in SQLServer 2000. We're investigating the possibility of the updatingtables with enormeous number of updates and insert and the use ofcheckpoints (for simple recovery and Backup Log for full recovery).On several website people speak about full transaction log and thepace of growing can't keep up with the update. Therefore we want tocreate a script which flushes the dirty pages to the disk. It's notquite clear to me how it works. Questions we have is:* How does the process of updating, insert and deleting works with SQLServer 2000 with respect to log cache, log file, buffer cache, commit,checkpoint, etc?What happens when?* As far as i can see now: i'm thinking of creating chunks of data of1000 records with a checkpoint after the Query. SQL server has thedefault of implicit transactions and so it will not need a commit.Something like this?* How do i create chunks of 1000 records automatically withoutcreating a identity field or something. Is there something like SELECTNEXT 1000?Greetz,Hennie
View 6 Replies
View Related
Feb 10, 2014
I have a table set of records. Its contains some customerID,SportsGoods,Price in different datetime. I want to add customer spent. If crossed 1000 means i have to show purchase time when it is crossed 1000. I need query without while and looping.
Example:
Customer NameGoodsPriceDatePurchased
ABat2501/31/2014
ABall221/31/2014
BCarrom Board4752/2/2014
CTennis Ball502/1/2014
AFootball1502/2/2014
DBat2501/31/2014
BBall221/31/2014
AHockey Bat1252/4/2014
CChess552/4/2014
AVolley Ball552/4/2014
View 9 Replies
View Related
Nov 8, 2007
I have the following SQL query where i want thease to be populate to GridView, but the Duration field is in Second format, I want it would be in HH:MM:SS format.
cmd = "select subscriber_id as Subscriber_no,,amount,duration from MyTable" ;
Please help me how to format this within the Query to display in GridView.
View 3 Replies
View Related
Mar 26, 2004
Hi all,
can someone give me some advise on how to troubleshoot this.... thanks.
Here is the situation:
We have a server running nicely for the past 1 years. And just yesterday, things started to acting very slow.
A simple query that will return one row:
"select * from product where itemno = 1234 and visible =1"
will take 20 second sometime 30! The weird thing is.. it only happens intermittently. The table also only contain 4000 rows. so its not even a big table. I am not sure if this is caused by lack of memory or what (256mb ram, p4 1ghz on this server).
The system cpu usage % avg around 3-8%. but when that weird behavior started. All the other queries will wait for it to finished and then burst the cpu usage up to 100%. Afterward, it will level off and then the cycle repeat again.
I'm just hoping if anyone can give me a few pointers as of where to troubleshoot. I've tried rebuild the index on that table but it didn't help. This weird behavior not only happen on this particular table, but also on different db within the same server. (note: they are small dbs only)
p.s. here is the site that is running on this db, you'll see this weird delay after a few click on the pages.
http://www.animepot.com
Thanks you for your time,
Derick
forgot to mentioned, the sql server is 7.0
View 2 Replies
View Related
