Find blocking process

[neo]

Hi,
we're having a problem with SQL 2000 and Opta 2000 JDBC driver
where there is large update running and at the same time,
read is blocked for a while.
We're looking for a way to catch this blocking process
and if it last more than 10 minutes, then email or send out a message.
I know sp_lock returns all current locks
but how do you know which one is blocking other processes?

Thanks for your help in advance.

[Erland Sommarskog]

neo (se*******@hotmail.com) writes:

we're having a problem with SQL 2000 and Opta 2000 JDBC driver
where there is large update running and at the same time,
read is blocked for a while.
We're looking for a way to catch this blocking process
and if it last more than 10 minutes, then email or send out a message.
I know sp_lock returns all current locks
but how do you know which one is blocking other processes?

The simplest way is to use sp_who. If a process is blocked, you will
see a non-zero value in the Blk column. This is the spid of the blocker.
--
Erland Sommarskog, SQL Server MVP, so****@algonet.se

Books Online for SQL Server SP3 at
http://www.microsoft.com/sql/techinf...2000/books.asp