Problem: Mssql Locks Several Records In A Specific Table, While No One Is Editing Them
Jul 20, 2005
Hi,
I have an Access application with linked tables via ODBC to MSSQL
server 2000.
Having a weird problem, probably something i've done while not being
aware of (kinda newbie).
the last 20 records (and growing)of a specific table are locked - cant
change them - ("another user is editing these records ... ").
I know for a fact that no one is editing records and yet no user can
edit these last records in the MDB - including the administrator -
while able to add new records.
Administrator able to edit records in the ADP (mssql server) where the
tables are stored.
Please help, the application is renedred inert .
Thanks for reading,
Oren.
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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.
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Jun 20, 2007
I have a table with 35,000 records in it. I want to update a value in column A for only the first 5000 records, leaving the value in Column A for the remaining 30,000 records as it is now. What would be the command I would use to update Column A for the first 5000 records.
Thanks,
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Jun 10, 2015
I have a problem where I have 2 compare 2 records from the same table. This part looks easy but the problem is for a User there can be multiple records and I have 2 compare each record with its previous instance based on the timestamp. Not only I have to compare I have to perform some analysis. Below is the Table script and sample output.
Givens: All SQL Server 2008 or 2012 tools at your disposal.
Production database contains the following tables (simplified for example: constraints ignored, etc.) associated with a racing video game’s server.
-- A player of our game
-- Table greater than 10 million rows
CREATE
TABLE [dbo].[User]
(
[UserId]
[bigint] NOT
NULL
,[country]
[int] NULL
-- User’s home country
,[name]
[nvarchar](15)
NULL -- User’s displayable name (‘John’, ‘Bill’)
,[subscriptionTier]
[int] NULL
)
-- 0 == free, 1 == paid, for instance
Assume that rows get written into the event tables at a rate of 1,000 a minute,are never updated once written and currently are only read on a replica/reporting server.
Question Background: Write up a single query that would return the following: List of users and whose “TotalMoneyEarned” value ever grew (between logon events) at a rate of more than 1,000 per minute (we’d consider these suspicious and flag them for later investigation).
For instance, if the sample data were:
-- example of [Events.UserLogon] data -- not the query output we want
EventId UserId TotalMoneyEarned LogonDate
----------- -------------------- ---------------- -----------------------
1 1 1000 2010-10-16 00:19:56.460
2 1 1500 2010-10-16 00:20:56.460
3 1 3000 2010-10-16 00:21:56.460
4 1 10000 2010-10-16 00:29:56.460
Event 1 is okay because there’s nothing to compare it against
Event 2 is okay because the TotalMoneyEarned only grew 500 in a minute
Event 3 should be flagged, as the value grew 1500 in a minute
Event 4 is okay, as it grew 7,000 in 8 minutes (< 1000 per minute)
Query Output (your query should return data in a format like this):
User Flagged Logon Time Rate Since Last Logon (money/minute)
John 2010-10-16 00:21:56 1500
Dave 2010-10-16 00:30:50 3200
Bill 2010-10-16 00:35:23 1000
It is likely that you will need to create sample data for both the User and [Events.Logon] tables. We are looking for a single query that returns data like what is represented in Query Output.
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Mar 5, 2015
I have a table which is updated daily using a MERGE statement. As records are insert, updated and deleted, I am saving the OUTPUT from the MERGE statement into a history table with a timestamp and action$ column appended to the record.
Using this history table, I'd like to rebuild the data based on specific past date. I was able to create a stored procedure that inspects each record in the history table and apply it to the data in a temp table. The stored procedure solution uses multiple queries to rebuild the data at a point in time. I was curious if there was an easier and more efficient solution using a table function.
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Dec 21, 2005
In
one of our forth coming projects, with ASP.Net/C#/MSSQL Server, We have
to deal with a Business table having about 15 millions of records. We
want to know, that which methodologies should we adopt, both regarding
front end and back end perspective, so the site could give optimised
performance. Also in place of a Dedicated Server, the Hosting Company
provides MSDE (that come with .net). Will this create any problem with
this project, that have such a huge table? Should we go for some
advanced database technique, such as, Clustering, Spliting Tables, etc.
Followings are the fields that the business table contains:
ID, Category ID (which comes from a Category table, each business is
under a category), BusinessName, SignupDate, Address1, Address2, Phone
Number,
Hours Of Operation, Years in Business, LicenseNumber, DiscountCoupon, Website
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Jul 20, 2005
I have an SP which I use to insert into a table data from another. Forexample...INSERT INTO myWorkTable(Field1, Field2)SELECTmyField1, myField2FROMmyNewTableIt's a pretty straight forward sp. Now, the data that gets insertedseems to have remained in a state that stops me updating it later. TheSP is called by one app which is then closed and not used again untilthe following month. The sp shouldn't be used by anything else.I have another application which goes to the table (in my examplemyWorkTable) and is supposed to open and edit specific records whichit does correctly navigate to (a few days after the sp). It fails andI get an error message stating that the record is being edited byanother user. This record should not be opened by any other process.If I export the data and re-import it into the table, it worksperfectly fine.The code used to edit the table is fine and has worked for a couple ofyears and I'm happy with it. The only change I have made is to use anSP to import the data instead of an old method using Access 2000. Thefunctionality is the same, even though the connection is different.The Delphi app uses BDE.Inserting directly through SQL works as I would have expected and Ican edit the record as I need.I'm guessing that Delphi (which I use for the app) is somehow notfreeing up the data locked by the SP when it finished calling the SP,even when it is closed. However, it seems a little bizarre as I wouldexpect it to free up the data affected by the SP once it has finished(maybe this is the wrong assumption).So, my question is, can an SP lock records in this way ? If so,how/why and can I stop this once finished, or is there a way ofchecking / resetting records which were locked up and should no longerbe this way. I can't see anything obvious which shows the records arelocked, but am willing to delve further.ThanksRyan
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Dec 18, 2007
I have created a database and used visual basic 2005.net2.0 to build the application. I used the data wizard. it created datatables and then I bound it to the contols on the form. The program is published to the server and each instance loads from the server and executes. When it stops, the instance is destructed from the host pc. The pc's are large ram and very small hard drive. These were the specs of the job. now when each pc loads an instance of the program, they can all load and edit the same exact record. I tried to bust it and I got on the same record and changed first name on one and last name on the other. the second one overwrote the first name edit. All of the data handling is done inside of the dataset designer and it does not allow edits. ( actually you can edit, but the next time you save it, or run it, it will rewrite what you added and it will be gone.) is there anything I can add to the form vb to tell it to lock the current record?
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Jan 24, 2008
Hello, i currently have a gridview that is populated with data from a SQLServer datasource. I have put an output mask in the select statement, so the date and time attributes are displayed in the format i prefer them to be in. SELECT PatientNo, ConsultantName, HospitalName, CONVERT (varchar, Date, 101), CONVERT (varchar, Time, 8) FROM [Appointment];
However when i click the 'edit' link for a record in the gridview, i am unable to edit the date/time attributes and when i click update to confirm any changes to the other attributes, the values in the date/time attributes are emptied. How can i solve this update problem. I'm guessing i need to configure my SQL UPDATE statement, but bit stuck how i do this. Please help!
Thanks,
James
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Oct 10, 2007
I want to ship 500,000 aged transactions each night to an archive table and delete them from their source table in one or more logical units of work (LUW). Each row is approx 60 bytes and there is only one non clustered index on the source table presently.
I'm trying to weigh the pros and cons of 3 alternatives. One of them would basically insert the non-aged rows into tempdb, ship the aged records, truncate the table and then insert the tempdb records back into their source all in the same LUW.
For this alternative, I'd at least like to turn off logging when the records get inserted into tempdb as I dont see any value in logging that part of the activity. Is this possible?
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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.
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Jan 30, 2004
I'm having problems constructing a query. I need to get a count of emails in my database, but only the emails that appear 2 or more times.
Can anyone help?
Thanks!
Justine
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Jul 23, 2004
Scenerio:
Its 3pm and a user comes to me and says, she's deleted an invoice with many associated items. I know the affected tables (foreign keys) and I have last nights backup of the db. However I don't want restore the entire db back from last night just the deleted invoice record/s. What is the best practice procedure for accomplishing this?
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Jan 24, 2007
I have a column session_date that holds the date in the format: m/d/yyyy or m/dd/yyyy
how do I write my select statement to grab all records by a specific year?
SELECT *
FROM mytable
WHERE session_date =
Thanks for any help.
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Dec 26, 2006
I am not sure where i should post this question since it falls both in Report Server and T-Sql but here goes...
I currently need to run a Report that has only specified records that the client/user wants by clicking the check in the check box next to the record they want. They can pick as many or a few of the records that want then run a report only with the records they indicated they wanted... i am thinking they will need some kind of t-sql statement either a function or temp table but i am not sure if even that...
if anyone has any ideas please reply...
Thanks,
WoFe
EXAMPLE: Instead of running a report on records 1, 2, 3, 4, 5, 6, 7, 8, 9
they would run the report on records: 2, 5, 6, 9
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Aug 15, 2005
Is there anyway possible to edit table design with data already entered in the table.If not, is there anyway I can cut and paste the info back in. Ive tried importing to access and then back to SQL, however, when i tried to view my table design in ASP.NET webmatrix, it gave me an error.
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Sep 6, 2007
This is out of my league. I’m hoping to get some good advice from someone experienced in the area. My inquiry is how to best handle large amounts of records, say 500,000 records or so. I am web programming and can’t send all this info from server to client.
Part of the problem is the manner in which the data gets stored. I cannot calculate what records I need to get for a distant page (i.e. if 10 items per page then where is my data getting page #512).
These are the very first five (5) records. First row is the primary key.
14
451
0
V5
2 vials
1
V5
8/10/2007
3
20
451
0
V10
2 vials
2
V5
8/10/2007
3
25
451
0
V5
2 vials
1
V5
8/15/2007
3
26
451
0
V10
2 vials
2
V5
8/15/2007
3
27
451
0
V40
2 vials
8
V5
8/15/2007
3Because records 1 through thirteen had been deleted, the primary keys for the first (5) are no longer 1, 2, 3, 4, 5. Had this been the case, a person could easily retrieve page 512, by mathematical calculation.
Page 1 would have been Records 1..10
# 2 = > 11..20
# 512=> 5111..5120.
I already have a program that loads the entirety into an arraylist; then picks out the page of data from the arraylist location. I could rewrite things so that a temporary SQL Table is created – but I don’t know is that a good idea?
All advice welcome - TIA
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Mar 5, 2008
Hi,
How to display specific number of records? That means I want to display records starting from 3th row to 5th row. Please send your suggestions or links.
Table
-----
Name Age
-----------------
Raja 23
Kumar 26
Suresh 30
Rani 22
Subha 32
Ganesh 25
The result will be
Name Age
-----------------
Suresh 30
Rani 22
Subha 32
Thanx.
GANESAN MURUGESAN
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Jul 20, 2005
Dear GroupI wonder whether you can give me a syntax example for a SQL Statement.Lets assume I've a table containing three columns ContactID (Primary Key),Firstname and Lastname.I would like to write a stored procedure which returns me the first tenrecords and increments an outside variable each time it runs.E.g If I run it the first time I pass the variable as 0 and it will returnme the first ten records and returns the variable value 1.When run a second time, I will pass the variable as 1 and it will return merecords 11-20 and sets the variable to 2 and so on...The difficult thing is how to tell to return me records 11-20. I can't usethe ContactID as someone might have deleted a row and e.g. ContactID 18 ismissing. In this case I only would get 9 rows returned. It always should beten.Thanks very much for your time and efforts!Kind Regards,Martin"There are 10 types of people in this world: Those that understand binaryarithmetic, and those that don't."
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Mar 12, 2008
I am fairly new to transact SQL and I am having difficulty retrieving the set of records I require given the data shown below. I want to be able to filter the records just to return the records that have the minimum securityorder for each unique secsyscode. I suspect I need to use min or group by to achieve the desired affect but cannot seem to get it right
any help would be appreciated
eg in the following
secsyscode, securitytypecode and securityorder are integers and securityCode is a char(16).
secsyscode
securityCode
securitytypecode
securityorder
1
Special
1
2
2
Total Fund
999
17
3
PerfInd
995
14
3
PerformanceIndex
999
17
4556
93152
1
2
4556
10815-0
4
1
4557
558372
1
2
4557
12137-0
4
1
4558
656113
1
2
4558
13154-0
4
1
4559
53673
1
2
4559
13672-0
4
1
I only want the following records to be returned.
secsyscode
securityCode
securitytypecode
securityorder
1
Special
1
2
2
Total Fund
999
17
3
PerfInd
995
14
4556
10815-0
4
1
4557
12137-0
4
1
4558
13154-0
4
1
4559
13672-0
4
1
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Oct 10, 2003
I am interested in getting a better handle on how SQL 2000 determines the locking level to apply to different transactions. I am familiar with the fact that SQL does this on the fly but I was wondering if this could be specified in a Stored Procedure to use one over the other instead and what impact if any that might have on indexes. The databases I work with run anywhere from under 100 GB to 150 GB. Thanks for anyone's input on this subject.
Thomas
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May 3, 2000
Hello!
We have a SQL Server table that needs to be maintained by the actuarial department. Therefore, I was going to have them make changes to the table using something easy like Microsoft Access 2000. When I go into Access and create an ODBC link to the table, I cannot change the data. (i.e. The insert new record feature is greyed out.) I CAN change the data via Enterprise Manager, so I don't think it is SQL Server security. Any other ideas?
Thanks,
Sharon
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Jun 4, 2015
For prototyping purposes, is there a tool that reads a database's schema and generates (simple) table editor that allows manual editing of data. It would be good if the tool somehow made it easy to add foreign key values to reference data e.g. gender, status, ...I can kind of do this using Management Studios "Edit Top 200 Rows", but I was wondering if there is a more user friendly tool out there.
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Apr 21, 2008
hello, i have 100,000 records in my table. Out of that what means to me is only 500 records that I want to pass thru and send it to destination.
The data I am trying to transport has a column ID with Not Null values in it.
Please let me know how can we do it,
Can we use a look up for ID from the other tables to just pass thru when it finds an ID match,
Am i correct.
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Aug 17, 2000
What is the best way to read and edit data in the tables of a sql server 6.5 database?
Thanks
Gunnar
gunnardl@yahoo.com
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Jul 23, 2005
Hi All !I open a table in Query Analyzer by right clicking on it andselecting 'Open' and when the data is displayed in the view pane Iwould like to be able to edit it. It seems however that tables markedas read only (as shown on the top bar e.g. SQL Query Analyzer - [OpenTable ServerName.DBName.dbo.TableName(read-only)] ) can not be editedwhereas the one that do not have that attribute infront of the name Ican edit. Is there a way I can change the read only attribute of atable so that I can edit data directly in the view pane?Please let me know if there is !Thanks a heap ! :)Harkirat
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Jul 20, 2005
Hello:I have an Access 2K form I built from a SQL Server 7.0 view. I want tolock certain fields in the database from users so they can see them onthe views and forms, but NOT be able to edit them.I've looked in BOL, MS SQL Server web page and SQL Server 7.0 books andcould not find how to do this.Any advise will be greatly appreciated.Thanks,Richard
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Jul 20, 2005
HiThere is an application that runs on sql server.The application selects/updates some few tables frequentlyOnce there is even a select on this table .It blocks other userssometimes for very long.Is there anything that can be done to reduce this?The table has 18000 rows and does not seem to have an indexI thought indexing might help but 18000 rows without an index isno reason for 30 minutes of lock time.I will appreciate your help as usualVince
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Dec 29, 2007
Hi,
I am trying to insert some records into a table within a transaction that is without commit/rollback.In other window/transaction i am trying to insert a record into the same table but it is hanging up.why?
I believe during the insert(with in a transaction) whole table is not locked.I should be able to insert records from other transactions.
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Sep 15, 2006
Hi All,
Is it possible that an OLEDB Data Flow Source is imposing locks on the source tables? The source is an SQL Server OLTP environment, and although the package will be scheduled to run nightly when the application sees little to no use, I want to be sure that the process isn't impacting any application functions.
Thanks for the advice!
Rocco
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Jun 28, 2012
I need to write a query to group records based on speed (specific value of zero). Consider the following scenario:
Table - Vehicle_Event
Vehicle_Id____Date_Time______________Speed
C1____________2012-06-28_10:10:00____5
C1____________2012-06-28_10:11:00____0
C1____________2012-06-28_10:12:00____0
C1____________2012-06-28_10:13:00____4
C1____________2012-06-28_10:14:00____3
[code].....
OUTPUT_Required:
Vehicle_Id____Date_Time___________________________ __________Speed
C1____________2012-06-28_10:10:00___________________________5
C1____________2012-06-28_10:11:00_to_2012-06-28_10:12:00____0
C1____________2012-06-28_10:13:00___________________________4
C1____________2012-06-28_10:14:00___________________________3
C1____________2012-06-28_10:15:00_to_2012-06-28_10:18:00____0
[Code] .....
I need the start and end time of consecutive records of the same vehicle with 0 speed ordered by date_time. If there is more than one consecutive record with zero speed it needs to be grouped together.
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Mar 18, 2015
I have a table with some examples below. I need to identify records where:
1. the person has 3 or more consecutive months ordered.
2. I then need to exclude the first and last month and capture only those Months in between.
PERSON ID MONTH ORDERED
JD12345 4
JD12345 7
JD12345 8 Note: JD12345 should be excluded entirely
[code]....
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Sep 13, 2006
Ok, I'm really new at this, but I am looking for a way to automatically insert new records into tables. I have one primary table with a primary key id that is automatically generated on insert and 3 other tables that have foreign keys pointing to the primary key. Is there a way to automatically create new records in the foreign tables that will have the new id? Would this be a job for a trigger, stored procedure? I admit I haven't studied up on those yet--I am learning things as I need them. Thanks.
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