| How many attempted logins have there been since SQL Server was last booted? | @@CONNECTIONS |
| How long has SQL Server been using the CPU since startup? | @CPU_BUSY |
| Has there been any period of time that SQL Server has not been working since startup? | @@IDLE |
| What is the highest number of simultaneous connections since SQL Server last started? | @@MAX_CONNECTIONS |
| How many network packet errors have there been? | @@PACKET_ERRORS |
| How many network packets have been received since it last started? | @@PACK_RECEIVED |
| How many network packets have been sent? | @@PACK_SENT |
| What is the SQL Server’s name? | @@SERVERNAME |
| What registry key was used when starting SQL Server? | @@SERVICENAME |
| How many network packets have been sent? | @@PACK_SENT |
| How many milliseconds per clock tick? | @@TIMETICKS |
| How many disk I/O errors have there been since SQL Server started? | @@TOTAL_ERRORS |