"The SQL Server cannot obtain a LOCK resource at this time" error

Hi there,
I am running on my machine the following SQL statements on my (local) SQL
Server:
SET NOCOUNT ON
SET ROWCOUNT 1500
delete_more:
delete table1 where field1 = '1' and field2 = '2'
IF @.@.ROWCOUNT > 0 GOTO delete_more
SET ROWCOUNT 0
The table has arround 5 million records and the DELETE statement would
delete arround 100000 records. I can see by running sp_lock that SQL is
escalating the locks to a table lock.
I am running in paralel the following:
SET ROWCOUNT 100
delete table1 where field1 = '3' and field2 = '2'
SET ROWCOUNT 0
This query is running fine, however the DELETE statement fails with the
error 1204:
"The SQL Server cannot obtain a LOCK resource at this time". Can somebody
shed some light for me here? Am I not able to run two DELETE statements is
paralel or am I doing something wrong?
I am running with the run_value for locks set to 0.
Thank you in advance.You mentioned there is already a table lock on that particular table, as it
is deleting millions of records. You probably need to wait for this
transaction to complete before you execute another delete statement on the
same table.
I suspect changing isolation level would solve your purpose.
"Andrei" wrote:
> Hi there,
> I am running on my machine the following SQL statements on my (local) SQL
> Server:
> SET NOCOUNT ON
> SET ROWCOUNT 1500
> delete_more:
> delete table1 where field1 = '1' and field2 = '2'
> IF @.@.ROWCOUNT > 0 GOTO delete_more
> SET ROWCOUNT 0
> The table has arround 5 million records and the DELETE statement would
> delete arround 100000 records. I can see by running sp_lock that SQL is
> escalating the locks to a table lock.
> I am running in paralel the following:
> SET ROWCOUNT 100
> delete table1 where field1 = '3' and field2 = '2'
> SET ROWCOUNT 0
> This query is running fine, however the DELETE statement fails with the
> error 1204:
> "The SQL Server cannot obtain a LOCK resource at this time". Can somebody
> shed some light for me here? Am I not able to run two DELETE statements is
> paralel or am I doing something wrong?
> I am running with the run_value for locks set to 0.
> Thank you in advance.|||What I want is to run several jobs concurrently, I do not want to wait for
one to finish in order to start the second one.
However I do not understand why I get the error, since the first statement
is suppose to delete 1500 records (so maximum 1500 key locks applied, if
there is no lock escalation) and the second statement is deleting 100
records. Am I missing something here?
"GYK" wrote:
> You mentioned there is already a table lock on that particular table, as it
> is deleting millions of records. You probably need to wait for this
> transaction to complete before you execute another delete statement on the
> same table.
> I suspect changing isolation level would solve your purpose.
> "Andrei" wrote:
> > Hi there,
> >
> > I am running on my machine the following SQL statements on my (local) SQL
> > Server:
> >
> > SET NOCOUNT ON
> >
> > SET ROWCOUNT 1500
> > delete_more:
> > delete table1 where field1 = '1' and field2 = '2'
> > IF @.@.ROWCOUNT > 0 GOTO delete_more
> > SET ROWCOUNT 0
> >
> > The table has arround 5 million records and the DELETE statement would
> > delete arround 100000 records. I can see by running sp_lock that SQL is
> > escalating the locks to a table lock.
> >
> > I am running in paralel the following:
> > SET ROWCOUNT 100
> > delete table1 where field1 = '3' and field2 = '2'
> > SET ROWCOUNT 0
> >
> > This query is running fine, however the DELETE statement fails with the
> > error 1204:
> > "The SQL Server cannot obtain a LOCK resource at this time". Can somebody
> > shed some light for me here? Am I not able to run two DELETE statements is
> > paralel or am I doing something wrong?
> >
> > I am running with the run_value for locks set to 0.
> >
> > Thank you in advance.