How To Increase TCP Connections in Windows 2012 Server

We have installed our Java application in Windows 2012 Server. After running for some time application started showing Connection Time out. We have set TCP Parameters MaxUserPort = 65534 and TcpTimedWaitDelay = 30.
We are facing the same issue, even after setting the parameters in windows registry. We have verified in our application, "There is no connection pool issue and no thread issue".
We are using JDK v6.0.29, Tomcat 7, MYSQL 5.5.
Apart from MaxUserPort and TcpTimedWaitDelay is there any other TCP parameters in Windows 2012 to improve performance of the server and our application.
2) At the same time we have found that ‘There is sluggishness in I/O process’. Is there any registry parameters to improve I/O performance in the system.
Thank You.

Hi,
You can refer the following article “Tuning TCP” part.
Windows Server 2012 Performance
Tuning Guidelines
Hope this helps.
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Andy Qi
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