title: trigger failed -ORA-04098 is invalid and failed re-validation sql
body: <pre><code>create or replace trigger "STUDENT_PERSONAL_DETAIL_T1" 
  AFTER insert or update or delete on "STUDENT_PERSONAL_DETAIL" 
  for each row 
  begin 
    insert into fa1 (s_id,name,class,sec) 
    select reg_no,name,class,sec 
    from inserted 
  end;
  </code></pre>
  
  <p>This is the trigger created using Oracle xe trigger creating interface.</p>
  
  <p>It is created without error but when a insert is called on the table trigger error is shown
  <code>trigger failed -ORA-04098 is invalid and failed re-validation</code>.</p>
  
  <p>Guidance and suggestions will help a lot.</p>