powershell sql server performance monitoring

[sourashis]

Hi,
I am trying to get microsoft sql server performance data using powershell. When I run the command "get-wmiobject -list" I get classes like
Win32_PerfRawData_MSSQLSQLEXPRESS1_MSSQLSQLEXPRESS1Locks. However when I run the command
get-wmiobject -query "select * from Win32_PerfRawData_MSSQLSQLEXPRESS1_MSSQLSQLEXPRESS1Locks" powershell gives me an error. Why is this happening? any help in this regard is appreciated.
Regards
Sourashis

 

[EBGreen]

What is the error?

[red]"... isn't sanity really just a one trick pony anyway?! I mean, all you get is one trick, rational thinking, but when you are good and crazy, oooh, oooh, oooh, the sky is the limit!" - The Tick[/red]