If your application relies on identity columns, this metric is a useful measure of the number of identity columns that are near to the limit per database. You can then avoid logical problems in your application and SQL Server errors.
2015-01-06
6,226 reads
This metric picks up excessive counts of Virtual Log Files (VLF) in a transaction log that can lead to performance problems, including write performance, restore and recovery times. The ideal value for this metric should be less than 25; excessively high values (greater than 50) can cause high write times when writing to the transaction log.
2014-12-11
7,312 reads
When a table has multiple indexes defined on the same columns, it produces duplicate indexes that waste space and have a negative impact on performance. This metric measures the number of possible duplicate indexes per database above a set threshold. You can then consider dropping the indexes and reverse the change.
2014-11-18
7,931 reads
This metric is a great general indicator of performance problems. High stall times indicate I/O problems, which can be attributed to busy physical disks or queries that return large data sets to the client.
2014-10-28
7,321 reads
Trying to determine if you have pressure in your buffer allocations can be difficult. This metric reliably indicates if you have a buffer problem using the memory dump from DBCC MEMORYSTATUS() and comparing Target Committed to the Current Committed allocations. If you hit negative numbers you are looking at a buffer issue.
2014-10-14
6,901 reads
If your log restores aren't happening when they’re meant to, you want to know about it. You’ll be relying on restoring from logs should anything happen to your databases, and if you can’t restore to a certain point in time, you risk losing valuable data.
2014-09-02
7,671 reads
The number of out of memory errors that have occurred within a rolling five minute window. If you just want to keep an eye out for any memory errors, you can watch the ring buffers for the Out of memory errors alert when it gets registered there.
2014-08-19
8,708 reads
This metric creates an alert that will be raised when something is added to the schema, or the existing schema is modified.
2014-08-05
8,628 reads
During a transaction, data is written to the log cache so that it’s ready to be written to the log file on commit, or can be rolled back if necessary. When the log cache is being flushed to disk, the SQL Server session will wait on the WriteLog wait type. If this happens all the time, it may suggest disk bottlenecks where the transaction log is stored.
2014-07-25
9,844 reads
This metric measures the amount of memory used by the total number of ad hoc queries in the plan cache that have only run one time. This value is only accurate for the instant the query is run, and the value can change radically from one capture time to the next.
2014-07-14
9,595 reads
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