Create disable trigger command by querying user_triggers table : user_tables « System Tables Data Dictionary « Oracle PL/SQL Tutorial

1. Oracle PL/SQL Tutorial
2. System Tables Data Dictionary
3. user_tables

SQL>
SQL> SELECT   'ALTER TABLE ' || table_name || ' DISABLE ALL TRIGGERS;'
  2  FROM     user_tables a
  3  WHERE    EXISTS
  4  (SELECT  'X'
  5  FROM     user_triggers
  6  WHERE    table_name = a.table_name)
  7  and      rownum < 2
  8  ORDER BY table_name;

'ALTERTABLE'||TABLE_NAME||'DISABLEALLTRIGGERS;'
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ALTER TABLE STUDENT DISABLE ALL TRIGGERS;

SQL>
SQL>