IS Connection Error

Hi all ,
when iam starting my IS properly and all servers like database(sqlserver),broker server working correctly.but i got error like below. but i dont know the reason
ple…any one help me…about this

2012-09-05 16:59:10 IST [CommonLib.MWS.0002W] DB Server disconnected. Will try to reconnect
2012-09-05 16:59:10 IST [CommonLib.MWS.0001W] [wm-cjdbc36-0007][SQLServer JDBC Driver]Connection reset by
peer: socket write error
2012-09-05 16:59:10 IST [CommonLib.MWS.0002W] DB Server disconnected. Will try to reconnect
2012-09-05 16:59:10 IST [CommonLib.MWS.0001W] [wm-cjdbc36-0007][SQLServer JDBC Driver]Connection reset by
peer: socket write error
2012-09-05 16:59:10 IST [CommonLib.MWS.0002W] DB Server disconnected. Will try to reconnect
2012-09-05 16:59:10 IST [CommonLib.MWS.0001W] [wm-cjdbc36-0007][SQLServer JDBC Driver]Connection reset by
peer: socket write error
Exception in thread “Thread-61” com.webmethods.sc.distributedlocking.DistributedLockingException: Excepti
on encountered trying to list locks, exception(java.sql.SQLException: [wm-cjdbc36-0007][SQLServer JDBC Dr

please check whether your IS is licensed or not…

Were you able to solve this error ? I think some MWS related lib files are missing.

Thank you.
Subash

Check database ports and make sure DB ports used by webMethods working correctly