how to simulate a block

could someone provide some simple code to simulate a block. I want to test
a blocking script I want to implement on prod.
TIA
C
Execute this on one connection:
create table ##foo (SomeColumn int)
go
begin transaction
insert into ##foo (SomeColumn) values (1)
waitfor delay '0:00:40' /* hold the transaction open for 40 seconds */
go
commit transaction
/*****************************/
Execute this on another connection:
select * from ##foo
Keith
"CD" <mcdye1@.hotmail.REMOVETHIS.com> wrote in message
news:%23PbFfLMeFHA.1920@.tk2msftngp13.phx.gbl...
> could someone provide some simple code to simulate a block. I want to
> test a blocking script I want to implement on prod.
> TIA
> C
>
|||Try,
-- conn 1
use northwind
go
begin transaction
update orders
set orderdate = orderdate
-- conn 2
use northwind
go
select * from orders
Connection 2 will be blocked until you commit or rollback the transaction in
connection 1.
AMB
"CD" wrote:

> could someone provide some simple code to simulate a block. I want to test
> a blocking script I want to implement on prod.
> TIA
> C
>
>
|||Look at tablockx holdlock keywords
these will hold locks on tables with in a block of code...
i.e.
create procedure ...
select @.nextid = id from foo with (tablockx holdlock)
/* tablockx forces an exclusive table lock
tablock to do a non-exclusive lock
holdlock tells SQL Server to hold locks for duration of the transaction */
update foo set [id] = [id]+ @.block
return @.nextid
...
this will prevent n users from getting the same id
GO
"CD" wrote:

> could someone provide some simple code to simulate a block. I want to test
> a blocking script I want to implement on prod.
> TIA
> C
>
>