Server has SQL SP3a installed (Win2K3). I restarted the SQL server service (and agent) last night and now I've lost all my sql performance counters.How can I get them back w/o a registry rebuild?

Depending on the other services installed, you may also have access to a variety of performance counters for that service, including SQL Server and SQL Server Analysis Services.

Out of the box, load tests provide an easy way to access performance monitor data about the servers that run your app, and how your app's interacting with the .NET Framework and SQL Server.

Joey on SQL Server Why Activity Monitor May Be Hurting Your SQL Server's Performance As Joey explains, Activity Monitor consumes a lot of resources and yields little usable data.

Redgate is launching upgrades to its SQL Server performance monitoring tool, strengthening its query tuning and optimization functions to facilitate enhanced query identification, optimization ...

Spotlight Cloud makes it easy for teams to solve complex SQL Server performance issues and reduce IT costs, and as a SaaS platform, enables reduced human labor on managing the monitoring tool itself.