PKG1.PRC_2: function call tree

|    
+--->1. PRC_REF_CUR_TAB2 (43)
|    |    
|    +---> OPEN iov_ref FOR (28)
|    
+---> FETCH lv_cur INTO lv_rec; (45)
+--->1. PKG2.FCN_MAX_VAL (47)
+---> UPDATE tab2 (49)
+---> WHEN OTHERS THEN (53)
+---> RAISE user_defined_exc; (59)
+---> CLOSE lv_cur; (63)