Unable to resolve 'jdbc.OpssDataSource'. Resolved 'jdbc'; remaining name 'OpssDataSource'

 Caused By: javax.naming.NameNotFoundException: Unable to resolve 'jdbc.OpssDataSource'. Resolved 'jdbc'; remaining name 'OpssDataSource'

Solution ; 

OPSS Datasource is not  targeted to the All the servers in the domain,Only targeted to the  AdminServer

Step 1: 

Login to WebLogic Console http://<servername>:<port>/console

click on Lock & Edit

Click On dm_domain  

expand services under the domain and click on data sources 

Click on opss-data-source > Targets 

check all of the managed servers 

And click save

Click on Activate changes