SQL: delete all the data from all available tables

Question

I am using oracle DB to maintain more than 30 tables, how can I delete all the data from all the tables? I only want to delete the data but not drop the tables.

Answer 1

A slight variation on Andomar's answer to truncate all tables for a specific user instead of only those of the current user:

SELECT 'TRUNCATE TABLE ' || owner || '.' || table_name || ';' FROM all_tables WHERE owner = 'user/schema'

Replace the user/schema bit above with the name of the user/schema (between the quotes) you are interested in.