Truncate table in Oracle getting errors

Question

I got the problem is when I run following command in Oracle, I encounter the error.

Truncate table mytable;

Errors:

Answer 1

this page offers a very good solution ...

ORA-02266: unique/primary keys in table referenced by enabled foreign keys

I'm here copying from it the Solution:

• Find the referenced ENABLED foreign key constraints and disable them.
• truncate/delete from the table .

• using any text editor .. just change disable to enable in the output you get from the query , then run it.

  select 'alter table '||a.owner||'.'||a.table_name||' disable constraint '||a.constraint_name||';'
  from all_constraints a, all_constraints b
  where a.constraint_type = 'R' and a.status='ENABLED'
  and a.r_constraint_name = b.constraint_name
  and a.r_owner  = b.owner
  and b.table_name = upper('YOUR_TABLE');