We have WLAN infrastructure with Cisco Aironet WAP distributed on the floors. Recently I've recived complaint from one of the floor, that they are facing slowness while working on SQL Application. When I try to ping to any destination ip, its not stable. However,there is no weakness in the signal.
I have 2 ssid's configured on WAP,guest and employees.
Firstly, if it's SQL-related applications ONLY then it's not your WLAN. If it was your wireless LAN, ANYTHING and EVERYTHING would be slow.
Is the slowness to SQL-related applications related only to WLAN? Does it also include WIRED network?
I don't have any experience with SQL-related applications but I've seen a few where it all boils down to the server and the application particularly when someone's done something to it.
Use a wired/wireless packet sniffer and find out what the response time from the server is like. Maybe something in the applications is causing the server to respond that can overwhelm the wireless network.