java - tomcat 6 stability issue on windows 2012 -


i have internal workflow web-based app. running fine @ 6 requests per second. using jvm 1.6, tomcat 6, windows 2003, sqlserver 2005. tomcat located on same vm sqlserver. no clustering.

then there port sqlserver 2012, , web app moved jvm 1.8, still tomcat 6, , upgrade jdbc driver jtds 1.2.1 1.3.1 support new sqlserver version. , tomcat moved own vm.

and happened after upgrades (above) once week network traffic on tomcat vm drops 0, cpu goes 60% , tomcat unresponsive until tomcat gets restarted, runs ok week.

we tried downgrading jvm 1.7, 1.6 , jtds 1.3.1 microsoft jdbc driver. no improvement. want try next put tomcat 6 on own pc, windows 2003 , monitor because concerned vm configuration/ network configuration causing problem. thoughts?

thanks!

tom


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