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Microsoft® SQL Server 2008 R2 Unleashed
book

Microsoft® SQL Server 2008 R2 Unleashed

by Ray Rankins, Paul Bertucci, Chris Gallelli, Alex T. Silverstein
September 2010
Intermediate to advanced content levelIntermediate to advanced
1704 pages
111h 8m
English
Sams
Content preview from Microsoft® SQL Server 2008 R2 Unleashed

Identifying Locking Contention

When a client application appears to freeze after submitting a query, this is often due to locking contention. To identify locking contention between processes, you can use the SSMS Activity Monitor, as discussed earlier in this chapter, in the “Monitoring Lock Activity in SQL Server” section; use the sp_who2 stored procedure; or query the sys.dm_tran_locks system catalog view. Figure 37.10 shows an example of a blocking lock as viewed in the SSMS Activity Monitor.

Figure 37.10 Examining locking contention between two processes in SSMS Activity Monitor.

image

To identify whether a process is being blocked using sp_who2 ...

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Publisher Resources

ISBN: 9780768696585Purchase book