Truncate all tabels in a schema

Have a Oracle 10 G database. Ho do  I truncate all the tables in a schema?

codemonkey2480Asked:
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sventhanCommented:
begin
  for r in (select table_name from user_tables) loop
    execute immediate 'truncate table ' || r.table_name;
  end loop;
end;
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johnsoneSenior Oracle DBACommented:
There is no command that I am aware of that will truncate all the tables.

You could write a PL/SQL block to do it.

Something like this:

BEGIN
  FOR C1 IN (SELECT TABLE_NAME FROM USER_TABLES) LOOP
    BEGIN
      EXECUTE IMMEDIATE 'TRUNCATE TABLE ' || C1.TABLE_NAME;
    EXCEPTION WHEN OTHERS THEN NULL;
  END LOOP;
END;
/

The catch is you cannot have any foreign keys.  If you do have foreign keys, you will have to disable all of them.  This can be done with a similar PL/SQL block.  You just need to select the constraints from USER_CONSTRAINTS where CONSTRAINT_TYPE = 'R'.
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