title: how to trigger when multiple columns are updated
body: <p>here I want to trigger the update query if any one of the columns are updated. But I am getting error table table is mutating, trigger/function may not see it.</p>
  
  <pre><code>create or replace
    TRIGGER TRIGGER1 
      AFTER  UPDATE OF HOST_ID,ENABLED_FLAG,ACTIVE_FLAG,AGENT_COUNTER,USER_WAIT_FLAG ON  MONITOR_AGENT_STATUS 
    FOR EACH ROW
      BEGIN
  update monitor_agent_status set active_flag='Y', enabled_flag='Y', agent_counter=0, user_flag='N';
   END;
  </code></pre>