Hello,
we have a problem on a customer's server which we never had in many years of
working with Tomcat.
The customer runs a Windows 2008R2 with Tomcat 6.0.29 und Java 1.6.0_20
The situation when the problem occurs is always this:
Our web-apps logs that suddenly the MS SQL Server on the same server cannot be
reached anymore due to a generic network error ("The TCP connection to host
localhost port 1433 has failed").
A check on the server showed that the required TCP ports are not accessible via
telnet (Ports for MSSQL, Tomcat AJP, Tomcat shutdown). Even more: also TCP or
UDP ports which haven't anything to do with Tomcat are missing (ports e.g. for
"lsass" "ntp"). "netstat" shows only two entries in high port region while
normally on any system you get a longer list.
After a restart of Tomcat service everything works again and all ports are back
in netstat.
Do you have any idea what can cause such a behaviour?
Best regards
Michael
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