Windows Server 2008 R2 En Enterprise 64bit
SQL Server 2008 R2 En Enterprise 64bit
症状：在performance monitor中看不到Sql Server相关的性能计数器
解决办法：
Rebuilding the counters:
cd c:\windows\system32
lodctr /R
cd c:\windows\sysWOW64
lodctr /R
Resyncing the counters with Windows Management Instrumentation (WMI):
WINMGMT.EXE /RESYNCPERF
Stop and restart the Performance Logs and Alerts service.
Stop and restart the Windows Management Instrumentation service.
This will rebuild all performance counters including extensible and third-party counters.