Hi, based on the error message u provide i think it could be a security issue. Can you confirm that the db host, user and password? Or have u try to access the database with the user and password?

Yes DB host , user and password is correct .

Try fill in the correct password in the workflowPassword i.e (workflowPassword= password)

Yes I am putting password ..

Maybe you can use MySQL client like HeidiSQL to test a connection from the server to the external database first. Check if any firewall running on the external db server.

Ok i try that..but can u tell me , my connection URL is right or not? means format of URL

Just now i used HeidiSQL and try to open same connection : 127.0.0.2 with user and password. It opened. Now what is the issue?

Custom JDBC URL.

Example: 

jdbc:mysql://localhost:3307/jwdb?characterEncoding=UTF8&useSSL=false

Still same issue.

Can anyone else will look into this. I need solution on this ASAP. PLS

There seems to be a missing forward slash after the port in your connection URL? It should be 3306/jwdb and not 3306\jwdb

Yes I used forward slash also ... Still same problem. Can you pls upload video tutorial for this or something useful for me which helps me to solve this problem....