I am using C# at the front end and my requirement is if any customer care executive opened any Customer specific detail for edit and other executive also want to open that customer detail at the same time, we can restrict him.

For this I am using UDLOCK, But when second executive want to access same record he is getting timeout, while I want to get any specific error or error code so that I can show error msg accordingly.

Can you please help me regarding this.

I am little bit confused with this concept and explanation of Imran

begin tran T1;
insert into example1 with(xlock)
values ( 1, ‘example’);
select * from example1

I think my select query should not show any data as transaction is in xlock but it shows inserted record.

Pinal has an article on finding the first day of the current month here: http://blog.sqlauthority.com/2007/05/13/sql-server-query-to-find-first-and-last-day-of-current-month/

AND ((AA.DISPOSAL_DATE > ‘20090831′)
OR (AA.STATUS_FIELD=’IN SERVICE’
AND AA.DELIVERY_DATE < '20091001'))

Since this is the specification for september month. i want to do it for each month before and after. I am not taking any month and year parameters.
I should do in inside the stored procedure where above code also lies.

HOW CAN I DO IT PLZ? HELP ME

i am creating a report on reporting service using stored procedure and deploying it on the web via asp.net
The reason i need it is becoz i want the client run the report and if he is satisfied with the report of that day, the report of that day needs to be locked i.e nobody can access the same report of that date again..

can you plz help me. i even don’t know whether its possible or not

-> If it’s the default for SELECT and not valid for anything else, then when would one use it?
-> Why does the UPDATE example show (WITH NOLOCK) if it’s not valid for update.
-> I thought the syntax was WITH (NOLOCK) not (WITH NOLOCK)

Your site says…
=======================
NOLOCK
This does not lock any object. This is the default for SELECT operations. It does not apply to INSERT, UPDATE, and DELETE statements.

Examples:
…
UPDATE Products (WITH NOLOCK)
SET ProductCat = ‘Machine’
WHERE ProductSubCat = ‘Mac’
==========================

Thanks,

Tim

basically my application having two pages
1)to view booked tickets
2)to view detail of ticket and update the ticket details
i want to use row level locing when one dispatcher
pnrno for updation no others can view that pnr

i tried this using your examples but total table is getting locked
can u give some examples

I have two procesess running parally..one is removing and inserting data in a table..and same time other process is try to select it from the same table….
it ends up locking the table…. how to avoid this…

Thanks..

Would (NOLOCK) work with Link Server in SQL 2005?

Best Regards

Vano

Select * from table_name (with lock_type)

failed to execute correctly. However the following form worked:

Select * from table_name with (lock_type)

Perhaps this is a syntax difference between SS2000 and 2005, I don’t know.

Yours faithfully,

I have a multithread client with 30 threads that execute same Stored Procedure (ex. getproducts ) that procedure return 10 diferent products from the products table, i want every thread get diferent products. I try including Serializable Transaction Lock Level and tons of deadlocks were found, my question is , what lock level i need to set in the stored procedure in order to get per thread 10 diferents products..

— procedure getproducts —

set transaction isolation level serializable

select top 10 productID from products
where checked=0

update top (10) products
set checked=1
where checked=0

– end procedure

any idea?

i am executing the below query in sql server 2005.

In the table structure is:

sportsid int 4
createdon datetime 8

Query:

SELECT * FROM tblblogs(NOLOCK) WHERE sportsid=2

Result:
16 rows affected.

SELECT * FROM tblblogs(NOLOCK) WHERE sportsid=2 and createdon=’2009-04-10 00:00:00′

Results:
No records displayed.

Please provide me the solution.

We have a financial accounting application where in we want to implement a lock as under:

Suppose user 1 selects a particual voucher for edit, we want to lock in such a way that if any other user tries accessing the same voucher, they get an error message stating ‘voucher is locked, pls wait’. Once user1 commits the voucher, the lock gets released and becomes available for other users.

Our application development platform is .net 2003, Framework 1.1 with SQL Server 2005 as the RDBMS. We use ADO.Net for DB interactions. We user VB.Net or C#.Net coding.

Pls let me know what is the best way to implement this type of locks.

Thx in advance
Chandru

How can I delete/remove this locks?

Your article is very interesting and I am a regular visitor of your wonderful site.

What Imran Mohammed has written creates a confusion about the default isolation level.

TRANSACTION ISOLATION LEVEL
level 0. READ COMMITTED
level 1. READ UNCOMMITTED
level 2. REPEATABLE READ
level 3. SERIALIZABLE

“level1 is the default isolation level of the database.”

BOL states that “READ COMMITTED” is the default isolation level.

Thanks,
\\K