please let me know if i'm wrong when posting this discussion.
We found that, there is an error occured in Qlikview Connector .
Attach is the error,
I have followed the resolution that given by qlik tech with below link by changing the configuration file in each Qlikview SAP Folder in the system , but when change the configuration file , the issue occured more often than before.
If you guys ever experience this issue, please let me know, what did you do to avoid this issue.
Please let me know if you guys need anything to compare.