Exclusive Locks
Jun 11, 2008Hi,
How do you lock a table in exclusie mode before running a query?
thanks,
ADVERTISEMENT
Intent Exclusive Locks
Jan 4, 2008
Are Intent exclusive locks compatible with rowlock?
I am getting a deadlock since i have ix lock on a page and another process(select query) is trying to acquire a shared lock.How can i solve this?
SQL Server 2008 :: Row Locks Not Escalating To Table Locks After 5000
Jul 16, 2015I'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.
Transact SQL :: How To List All Locks (including NON-BLOCKING Locks)
Aug 5, 2015We 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.
Exclusive Mode
May 21, 2003Hi,
When I open an application, it prompts me for a message that SQL is locked in exclusive mode by other application.
How to solve this?
thanks in advance
christine
Non-bitwise Exclusive Or?
Jan 30, 2004Is there a way to do a logical exclusive OR (XOR) in sql server?
I'm trying to do this in where clause, something like:
WHERE
(not exists (select 1 from table a where a.date > '01/30/03') XOR
exists (select 1 from table a where a.date < '01/30/03'))
Thanks!
Many To Many - Exclusive Result
Oct 17, 2007A problem about many to many relationships from an SQL beginner. Here's a contrived abstract example, as I'd prefer not to give away specifics.
Imagine I have two tables: users, food
The relationship (to like) is many-to-many so I've got a link table, which might look like the below:
andrew, apples
bob, banana
bob, apples
chris, carrots
chris, apples
chris, banana
I want to select users who like bananas and apples exclusively.
The answer should be 'bob' ONLY. select * from users inner join food on <IDs> where food in ('bananas','apples') isn't suitable , because it'll also return 'chris' who should be disqualified (because he also likes carrots).
Apart from potentially being bad DB design (although this is an abstract example; I do have ID numbers), can anyone suggest how to get this in a scalable way?
Exclusive Lock During A SELECT
Aug 9, 2000Anybody know how a SELECT statement can generate an exclusive lock on a table ?
I always thought that SELECT's take out shared locks. Is this something to do with temporary tables generated by ORDER BY's and DISTINCT ?
Rogue SQL below (from Site Server).
SELECT A.i_Dsid, A.i_Aid, A.vc_Val, A.i_Val, A.dt_Val, A.img_Val FROM Object_Attributes A, ( SELECT DISTINCT L.i_Dsid FROM Object_Lookup L , Object_Attributes OA2 (index = IND_vc_Aid) WHERE ((( L.i_ObjectClass = 9999 )) AND ( OA2.vc_Val LIKE ( '999999999.9999999%' ) AND OA2.i_Aid = 99)) AND (L.i_Container_Dsid = 99) AND ( OA2.i_Dsid = L.i_Dsid )) AS B WHERE B.i_Dsid = A.i_Dsid AND A.i_Aid NOT IN( 1, 2, 3, 4, 5 ) ORDER BY A.i_Dsid, A.i_Aid
Can anybody suggest a workaround ? Thanks.
How To Obtain Exclusive Access Via SQL
Feb 5, 2003Hi,
i need to run a restore of a database overnight onto a different server using the live data .bak file. however the job failed on the first run (last night) with the error:
"Exclusive access could not be obtained because the database is in use. ...."
how do i gain this Exclusive use via an SQL statement please?
Exclusive Access To DataBase
Jul 12, 2004Hi.
I need to access a database to modify, updates,... massively . It's possible to lock a database and have exclusive access?
(SQLServer 2000)
thanks.
Francisco
Trying To Get Exclusive Access To A DB For Restore.
Feb 11, 2004I have created a SQL Agent job that is supposed to essentially duplicate a production database to another database. The code I am using is:
step1
__________________________________________________ ______
declare @sql varchar(8000)
set @sql=''
select @sql=@sql+'kill '+cast(spid as varchar)+char(13)+char(10)
from sysprocesses where dbid=12
--Print (@SQL)
exec(@sql)
step2
__________________________________________________ ________
RESTORE DATABASE HIWDYNARPT FROM PRDBACKUP
WITH REPLACE
__________________________________________________ ______
This works when I test it during the day, however when it runs at night I get the following error in the job log:
Database in use. The system administrator must have exclusive use of the database to run the restore operation. [SQLSTATE 42000] (Error 3101) Backup or restore operation terminating abnormally. [SQLSTATE 42000] (Error 3013). The step failed.
I'm not sure why this happens because I have killed all open threads in step 1, and then create my own new thread in step two. Maybe someone else is initiating a new thread to quickly between the steps???
Anyway, I am trying to use:
__________________________________________________ __
ALTER DATABASE HIWDYNARPT
RESTRICTED_USER
WITH ROLLBACK IMMEDIATE
__________________________________________________ ____
...as an alternative to the T-SQL killing PID's, but SQL 7.0 SP4 does not seem to support restricted user like 2000. It keeps giving me a syntax error. Does anyone have any suggestions?
If I bring step 1 and step 2 together, separated by "GO", could this fix the problem?
Thanks in advance!
Ryan Hunt
Exclusive Access Could Not Be Obtained Because The
Dec 8, 2007Could anybody give a lead as to what I can do get rid off this error please.
I alread tried following:
use master
go
Alter Database dbname set single_user with rollback immediate;
go
Still have the issue. SQL 2005 Server actually did lock the db.
So ran
Alter Database dbname set multi_user;
go
and refresh Query and it switch back to multi user.
But I can't restore db yet.
Thank you
Exclusive Insert Lock On A Table
Sep 10, 2007Hello All!
I want to perform 4 or 5 statements as a transaction but I need to make sure that during this complete transaction no one else inserts or deletes records from a table named SomeTable.
So how can I lock MyTable at the beggining of the transaction so that during my transaction no one else can insert or delete anything in table SomeTable?
Thanks!
David
Exclusive Access Could Not Be Obtained Because The Database Is In Use.
May 25, 2004How to close the existing connections to a particluar database in sql server. Please note that i donot want to start stop sql server. I just want to close the existing connections so that i can do a restore on that database programatically.
I am using sqldmo for this purpose. Does anyone knows how to do that with sqldmo or is there any other method??
Waiting for your earliest replies
Can You Place An Exclusive Row Lock Using A Hint?
Feb 21, 2000Hi,
Is it possible to place an exclusive row lock when running a SELECT query by using a lock hint (or otherwise).
Basically, when a select statement is run against a table I don't won't any other users to read that row until it has been updated - at some later stage.
Any suggestions on whether this is possible would be welcome.
Thanks,
Karl
Query Trouble Regarding Bitwise Exclusive
Feb 25, 2001HI, i am trying to make query that has computations with it. but when there's a point computing between int and float i had to use cast() function to convert certain data types. somehow it only works on converting float to integer because when i'm converting an integer into float inorder to be computed with a float it bombs. my query is like this ....
SELECT cast(((cast(((lat - (SELECT LAT FROM TPS_ZIPUSA WHERE ZIP_CODE = 00210)) * 69.1) AS int) ^ 2) + (cast((69.1 * (lng - (SELECT Lng FROM TPS_ZIPUSA WHERE ZIP_CODE = 00210)) * (COS((SELECT LAT FROM TPS_ZIPUSA WHERE ZIP_CODE = 00210) / 57.3))) AS int) ^ 2)) AS float) ^ .5
FROM TPS_ZIPUSA
.5 is where the query bombs. any idea why is this happenning?
by the way, i'm using sql server 7.0.
francis,
Exclusive Access Could Not Be Obtained Because The Database Is In Use
May 31, 2008Hi!
We're using a backup with sql server agent when doing a backup / restore
procedure. In some cases I get the following error when the restore job
fails:
Executed as user: DOMAINAdministrator. Exclusive access could not be
obtained because the database is in use. [SQLSTATE 42000] (Error 3101)
RESTORE DATABASE is terminating abnormally. [SQLSTATE 42000] (Error 3013).
The step failed.
Is it related to unhandled lock? I've resolved this by restarting the sql
server. But is there a way to avoid such issues?
One more question. Is it OK to backup/restore database while there're users
connected? Or I can do only backup?
Inserts Resulting In Exclusive Key Lock
Apr 1, 2004I'm relatively new to SQL and I've come across something that doesn't seem quite right. When an insert becomes part of an transaction I notice an exclusive KEY lock in Enterprise Manager. The table in question was using a Clustered index but I changed that, dropped the table and brought it back in but I still get the lock which keeps all others out of the table. Is this the expected behavior or is there something I am missing? Could the size of the tabe affect things? This is a very small table currently. I'm using MSSQL 7 sp3.
Thanks,
John
Deadlock -select With Exclusive Lock
May 12, 2008Hi ,
I have some issues with deadlock.I am getting deadlock becuase of two
select on same table. The sql server log is like this ,
Select statements should have always shared lock.I am not getting why
its doing exclusive lock and creating deadlock.
5/6/2008 12:38 spid4s Unknown Deadlock encountered €¦. Printing
deadlock information
5/6/2008 12:38 spid4s Unknown Wait-for graph
5/6/2008 12:38 spid4s Unknown Log Viewer could not read information
for this log entry. Cause: Data is Null. This method or property
cannot be called on Null values.. Content:
5/6/2008 12:38 spid4s Unknown Node:1
5/6/2008 12:38 spid4s Unknown KEY: 9:72057594050117632 (8d036f07c58f)
CleanCnt:3 Mode Flags: 0×0
5/6/2008 12:38 spid4s Unknown Grant List 3:
5/6/2008 12:38 spid4s Unknown Owner:0×12E9F160 Mode: S Flg:0×0 Ref:1
Life:00000001 SPID:68 ECID:0 XactLockInfo: 0×353D1C54
5/6/2008 12:38 spid4s Unknown SPID: 68 ECID: 0 Statement Type: SELECT
Line #: 4
5/6/2008 12:38 spid4s Unknown Input Buf: Language Event: (@actDefId
nvarchar(36)@stateList varchar(1)@stateList1 varchar(1)@procRelObjType
smallint@procRelObjIdList varchar(36))
5/6/2008 12:38 spid4s Unknown Requested By:
5/6/2008 12:38 spid4s Unknown ResType:LockOwner Stype:€™OR€™Xdes:
0×2FBB67F0 Mode: X SPID:112 BatchID:0 ECID:0 TaskProxy0×0792E378)
Value:0×38baa20 Cost0/11888)
5/6/2008 12:38 spid4s Unknown Log Viewer could not read information
for this log entry. Cause: Data is Null. This method or property
cannot be called on Null values.. Content:
5/6/2008 12:38 spid4s Unknown Node:2
5/6/2008 12:38 spid4s Unknown KEY: 9:72057594049986560 (6f02e1cd37c3)
CleanCnt:3 Mode:X Flags: 0×0
5/6/2008 12:38 spid4s Unknown Wait List:
5/6/2008 12:38 spid4s Unknown Owner:0×12396EE0 Mode: S Flg:0×2 Ref:1
Life:00000000 SPID:90 ECID:0 XactLockInfo: 0×0AA8178C
5/6/2008 12:38 spid4s Unknown SPID: 90 ECID: 0 Statement Type: SELECT
Line #: 4
5/6/2008 12:38 spid4s Unknown Input Buf: Language Event: (@actDefId
nvarchar(36)@stateList varchar(1)@stateList1 varchar(1)@procRelObjType
smallint@procRelObjIdList varchar(36))
5/6/2008 12:38 spid4s Unknown Requested By:
5/6/2008 12:38 spid4s Unknown ResType:LockOwner Stype:€™OR€™Xdes:
0×353D1C30 Mode: S SPID:68 BatchID:0 ECID:0 TaskProxy0×13B3E378)
Value:0×12e9e780 Cost0/6164)
5/6/2008 12:38 spid4s Unknown Log Viewer could not read information
for this log entry. Cause: Data is Null. This method or property
cannot be called on Null values.. Content:
If you have any idea regarding this please let me know ASAP.
Thanks in advance .
How To: Implement Exclusive Access To A Given Record.
May 5, 2008Purpose
I would like to know if it is possible and if so how to implement exclusive access to a given record within in a database table.
Example
For example, you can open a file system file with exclusive access so other processes cannot access the file until it is released. I would like to implement a solution that provides this same exclusive access at the database record level. Preferably a solution that does not require creating and managing table access state flags. (i.e. €“ FieldName.State = (Closed, Opened, Exclusive)) I would like for the database server to mange this solution and return an error status when trying to access a record that has been opened exclusively. Furthermore, I would like to avoid using triggers.
Application Utilization
I€™m working on a system that has multiple threads that are each responsible managing data from the same normalized table. Each of these system threads work on the same unique record in parallel. Therefore it is possible that thread (0)€™s changes could be overwritten by thread (n)€™s. I would like to have each thread open the unique record exclusively and release it when finished. All of the other threads would loop until the record is released.
Questions
1. Is it possible to implement this at the server level?
2. What would be the easiest best practice for implementing this functional requirement?
Thanks,
Sean
Having A Mental Block On An Exclusive Join
Feb 9, 2008Hi, I've got three tables that I'm trying to pull data from. The first is a family of rings, the second is the individual rings and the third relates one ring to another:
RingFamilies
------------------------------------
FamilyID pk | FamName
------------------------------------
Rings
-------------------------------------------
RingID | FamilyID fk | RingName
-------------------------------------------
RingAssociations
-----------------------------------------
RingID1 pk/fk | RingID2 pk/fk
-----------------------------------------
I'm trying to pull a list of RingIDs and names for a given FamilyID. To complicate it, I want to exclude rings that are already associated to a given RingID, i.e. I only want the unassociated rings in a given family. To complicate it even a little more then name needs to be the FamName+RingName...is this possible? Thanks!
Given @FamID and @RingID
Result Table
------------------------------------------------
RingID | FamName + RingName
------------------------------------------------
Exclusive User Access To Database
Sep 29, 2007Hi All,
My question is regarding SQL Server database security. I want to create a login using SQL Server Authentication and assign it db_owner rights for my database. So far so good. But the critical part is that I want to give exclusive rights for my database to this user only i.e. no other users (dbo, guest etc) should be allowed to access my database.
It will be good to present here the scenario which I need to implement. I am running an ASP.NET application that uses SQL server 2005 db at back end. The database server might have other databases as well but I don't want the administrator (either SQL server admin or the server administrator) to be able to get access to my database or even view the schema. I don't want any other user except my own user to be able to detach the database or perform backup or restore operations.
I hope I was able to deliver the requirement.
Exclusive Access Could Not Be Obtained Because The Database Is In Use
Apr 11, 2007Hi
I am trying to use sql server 2005 management stodio to restore a database. But I got this error message:
Exclusive access could not be obtained because the database is in use
Anyone know how to solve this problem?
Thanks
Li
Exclusive Access Could Not Be Obtained Because The Database Is In Use.
Jun 15, 2007I have a test database that is automatically restored from the live database each day at 2:30AM. I recently started receiving this message:
Exclusive access could not be obtained because the database is in use.
and the restore is not able to occur.
Any ideas on how I can prevent this from happening?
Restoring Log, With STOP AT Function..problems With Exclusive Use
Nov 30, 2004I restored a full backup of db...then I use this script to backup log, using the stop at function:
Restore log db from disk='e:Program FilesMicrosoft SQL ServerMSSQLBACKUPdb_tlog_200411300800.TRN' with
RECOVERY,STOPAT = 'Nov 30, 2004 1:00 AM'
when I run this script in Query Analyzer, I get:
Server: Msg 3101, Level 16, State 1, Line 1
Exclusive access could not be obtained because the database is in use.
Server: Msg 3013, Level 16, State 1, Line 1
RESTORE LOG is terminating abnormally.
No other connections are present to the database except my connection through QA ...what can I do ?..please respond ASAP
thank you
Mutually Exclusive Counts On Ordered Queries
Jul 23, 2005Ive been playing with this for a few days and thought I might thow itout for seggestions.I have Several Queries that need counts returnedThe Queries are Mutually Exclusive meaning whatever Query they returnin first they cannot be included in the counts of any queries belowthem.This set of queries for exampleSelect ID From Customers where FIRST_NAME = 'Chris' (would return say150)Select ID From Customers where ST='OH' (This would retunr say 50, BUTRun alone it might return 70, however 20 of those were in the firstQuery so they arent to be retunred in this result set.The total for Bot Queries would be 200But If I reverse it like soSelect ID From Customers where ST='OH' (This now returns 70)Select ID From Customers where FIRST_NAME = 'Chris' (This now returns130)The total of course for BOT Queries is 200 but I dont need that total Ineed the total for EACH Query depending on its orderingWhat I need are the single counts depending on the order in which thequeries are runIt seems like a recursion problem, but It might go past 32 level so Icant use recursive SQL ( I dont think )I've thought of (or tried to think how to use Not In, Not Exist, etcbut still dosent come up with the results....)How Can I grab the counts for each Query ?Chris
View 5 Replies View RelatedIs It Possible To Read Data From A Table With Exclusive Lock ?
Sep 4, 2006Hello,
We currently use SQL Serv 2000 with an ERP application and VB applications.
Both system work with the same database & tables but the ERP application seems to put exclusive lock on all tables it needs during processes. So our VB applications are not able to read these data and we receive TIMEOUT error.
What can I do ?
thank you
Nico
More On Restoring Database In User Instance - Exclusive Use Not Obtained
Apr 11, 2007
Hi all. I have read and implemented the very helpful threads on backing up and restoring with user instance posted with MFriedlander. Thank you. However, during the rs.SqlRestore(srv) command I am getting the following error "Restore failed for Server '\.pipe4A1F91FF-F6FE-45 sqlquery'. "
"Exclusive access could not be obtained because the database is in use."
I have implemented the changedatabase method as described in that thread.
SqlConnection.ChangeDatabase("master")
right before the line
rs.SqlRestore(srv)
I do not use the default instance of sql express, but I do use an instance called 'test' for my app. Should my changedatabase method also refer to my sql instance?
I am running from VS 2005 debug (F5) when it fails and cannot think of anything that would be locking it. Any help would be appreciated. Thank you. Below is the full code of the restore.
Robert
Dim sqlconnection As SqlConnection = New SqlConnection(My.Settings.dbTestConnectionString)
sqlconnection.Open()
MsgBox(sqlconnection.Database.ToString())
Dim ServerConnection As ServerConnection = New ServerConnection(sqlconnection)
Dim srv As Server = New Server(ServerConnection)
'Declare a BackupDeviceItem by supplying the backup device file name in the constructor, and the type of device is a file.
Dim bdi As BackupDeviceItem
bdi = New BackupDeviceItem(txtRestoreFile.Text, DeviceType.File)
''Define a Restore object variable.
Dim rs As New Restore
'Set the NoRecovery property to true, so the transactions are not recovered.
rs.NoRecovery = True
rs.ReplaceDatabase = True
'Add the device that contains the full database backup to the Restore object.
rs.Devices.Add(bdi)
'don't know why the below norecovery is changed to false
rs.NoRecovery = False
'Specify the database name.
rs.Database = sqlconnection.Database.ToString()
sqlconnection.ChangeDatabase("master")
'Restore the full database backup with no recovery.
rs.SqlRestore(srv)
Cant Restore SQL Server Databases: Exclusive Access Could Not Be Obtained
Jul 7, 2007
Hi everyone,
Hope somebody can help me on this.
I did a full BACKUP for two SQL databases using SQL Server Managament Studio. When trying to RESTORE the DBs, I get the following error:
"System.Data.SqlClient.SqlError: Exclusive access could not be obtained because the database is in use. (Microsoft.SqlServer.Smo)"
There are NO users using the application. These are DBs for the Portfolio Server 2007 application.
After exploring a little bit, I found that there are several "SLEEPING" processes with an "AWATING COMMAND" flag. The processes come from the Portfolio Server Application, maybe from previous sessions.
Can they be deleted? if so, would there be any serious consequences?
Thank you for your help on this.
Oscar E.
SQL Server 2008 :: List Of Commands That Require Exclusive Access In Order For Command To Complete
Aug 10, 2015Any list of commands that require exclusive access in order for the command to complete? I had an instance today where a DBA executed sp_changedbowner command which is the alter database command on a production database and it locked it up.
View 0 Replies View RelatedLocks
Nov 10, 2003I have read that even during read procedures (sql select statements), sql server uses row locking. I know that you can use the NOLOCK keyword, but if you don't everytime that a user makes a selects statement on a table, does sql server really lock those rows, and if so are they then unavailable to another user who wants to make a select statement at the same time on that same table? That does not seem like it would be the case otherwise it would not scale well. Thanks for any clarification on this.
View 5 Replies View RelatedLocks
Feb 13, 2002I am using SQL Server7.0. I opened a table through the Enterprise Manager and left it open. In the Query Analyzer when I try to update a field on that table(more than 2000 rows), it goes on running. When I watched the Current Activity, it shows that the update process is being blocked by the select query. But if I try to update the same column for less than 1500 rows, there is no blocking issue and the update occurs immediately. Can anybody let me know why this is happening and what should I do to prevent it?
View 1 Replies View RelatedRegarding Locks
Mar 28, 2000I am using Sql Server 7.0
To I got the following error message. Can some one tell how to solve this issue.
Server: Msg 1204, Level 19, State 1, Procedure OPEN_OBJECTS, Line 2
SQL Server has run out of LOCKS. Rerun your statement when there are fewer active users, or ask the system administrator to reconfigure SQL Server with more LOCKS.
ranga.