It is very simple.
One way to change it is, by simply editing setDomainEnv.cmd which resides in $root_domain/bin folder.
1. Look for the line that sets the
PRODUCTION_MODEscript variable: set PRODUCTION_MODE
Add false to the value of the
PRODUCTION_MODEvariable to ensure the server starts in development mode:
Set true for starting in prod mode.
2. Save your changes and exit the text editor.
Second Way -
Login to weblogic console
Select your domain name on left hand side
Select the Production option at right hand side
Restart the server