Create dbca template from an existing database (structure as well as data)

Trying to create a template using DBCA but option is not working

Solution

1. Simply go to ORACLE_HOME run the root.sh file with root user.
2. Then go to check /etc/oratab file is created or not.
3. If not then manually create oratab file in etc folder and entery

Like this → UAT:/u02/orauat/oradev/UAT/db/tech_st/11.1.0:N

4. Then save with :wq!
5. and try to run again dbca

Now Its working enjoy ☺ !!!!!!!!!!!!