Makeing anonymous scipts in pl/sql : I need to build an anonymous script to insert values in a table of configuration whit this columns: config and value

this is what i need to insert

Config: ‘country’		Value: ‘Argentina’
Config: ‘moneysign’		Value: ‘$’
Config: ‘dateformat’	Value: ‘DD/MM/YYYY’

I have to validate that the 3 insertions are correct. In case of failure, identify which failed and return the DB to the consistent state it was before starting the script.