When working with the resource, The below exception message is seen on the TIBCO Data Virtualization:
------------------------------------------------------------------
" A system exception has occurred. Custom Java Procedures are not enabled in the server configuration."
------------------------------------------------------------------

All supported environment

To resolve this enable the "Enable the ability to run Custom Java Procedures" in TIBCO Data Virtualization studio.
Follow the below steps to enable "Enable the ability to run Custom Java Procedures" in TIBCO Data Virtualization Studio:

1. Open the TIBCO Data Virtualization Studio
2. Navigate to Administration > Configuration > Data Sources > Custom Java Procedure Sources > Enable the ability to run Custom Java Procedure 



3. Set "Enable the ability to run Custom Java Procedure " to true and click on Apply.

This article explains the exception message which might pop up on the studio while working with resource in TIBCO Data Virtualization.