Event ID

Event Description

Example

12100

Performance counter fell below threshold

The performance counter "Memory\Available MBytes" fell below the threshold of 25, the current average is 10.

12101

Instance of a performance counter fell below threshold

The performance counter "%1" (instance "%2") fell below the threshold of %3, the current average is %4.

12102

Performance counter equals threshold

The performance counter "%1" equals the threshold of %2.

12103

Instance of a performance equals threshold

The performance counter "Process(*)\Thread Count" (instance "myapp") equals the threshold of 20.

12104

Performance counter exceeds threshold

The performance counter "%1" exceeded the threshold of %2, the current average is %3.

12105

Instance of performance counter exceeds threshold

The performance counter "Process(*)\% Processor Time" (instance "sqlserv") exceeded the threshold of 80, the current average is 91.

12106

A group alert was triggered

The group alert "High System Activity" was triggered because all performance counters of this group reported an alert the last time they were checked. Please see below for a list of all performance counters and the data last reported: %2

12110

Required entry points could
not be found in PDH.DLL

One or more required function entry points could not be found in the dynamic link library PDH.DLL. Please make sure that the latest version of PDH.DLL is installed on this machine, for example you may copy the DLL from another machine running a later Operating System. Performance monitoring cannot continue.

12111

PDH.DLL could not be found

The dynamic link library PDH.DLL could not be found and is required for performance monitoring. Please make sure that the latest version of PDH.DLL is installed on this machine, for example you may copy the DLL from another machine running a later Operating System. Performance monitoring cannot continue.

12150

Performance counter is back above threshold

The performance counter "Memory\Available MBytes" is back above the threshold of 25, the current average is 42.

12151

Instance of a performance counter is
back above threshold

The performance counter "%1" (instance "%2") is back above the threshold of %3, the current average is %4.

12154

Performance counter is back below threshold

The performance counter "%1" is back below the threshold of %2, the current average is %3.

12155

Instance of a performance counter is
back below threshold

The performance counter "Process(*)\% Processor Time" (instance "sqlserv") is back below the threshold of 80, the current average is 29.

12156

A previously alerted performance counter is
not available anymore

The performance counter "Process(*)\% Processor Time" (instance "setup") which previously exceeded the configured threshold, is not available anymore and will not be monitored.