Splunk universal forwarder not reporting data from SQL server

Hi everyone , We have issue with Splunk universal forwarders , we installed recently on SQl servers , i have all inputs.conf and outputs.conf set correctly and there is no error in log data . but its no reporting logs in splunk. Ours is clustered search head pool with 2 search heads , 5 indexers and 5 heavy forwarders . we have forward management console , which generally phone-in to the universal forwarders by pushing some of the apps . In Past i have some other VM's which i faced the same issue , i reinstalled the universal forwarder agent which fixed the issue , but currently its not happening with these SQL servers . Thanks in advance