I have installed in my network a new TP 3452 switch with IP: 192.168.0.150, I have created a new VLAN (VLAN 10 - 192.168.10.xxx) and it is working but I have the following problem:

During the day the clients that are in the new VLAN10 have frequent momentary disconnections. 
For example: they have a Map drive T: and while it is connected and they see the files and the oracle program communicates normally, suddenly for 1 second there is a disconnection of the map drive T: and the oracle program crashes due to the disconnection.

I have tried to search the Internet for a similar problem but have not found anything. 

Can somebody help me; 
Thank you very much.