Answers for "System.debug apex"

apex set debug level

f?p=app:page:session::YES/LEVELx:::
-- x is between 1 (least detailed) and 9 (most detailed)
f?p=100:1:&APP_SESSION.::YES
f?p=100:1:&APP_SESSION.::LEVEL5
-- OR
APEX_DEBUG.enable(p_level)
-- OR
APEX_SESSION.set_debug(p_session_id,p_level)    -- p_level: NULL to disable

apex_debug example

PROCEDURE my_proc (p_id IN NUMBER, p_emp IN emp%ROWTYPE) IS
BEGIN
    APEX_DEBUG.ENTER('my_proc', 'p_id', p_id, 'p_emp.id' , p_emp.id);
    APEX_DEBUG.LOG_PAGE_SESSION_STATE;	-- saves all items
    MY_PACKAGE.MY_FUNCTION;				
    APEX_DEBUG.LOG_DBMS_OUTPUT(p_prefix=>'[Debug] ');
    APEX_DEBUG.INFO('my_proc successfully finished.');
EXCEPTION
    WHEN OTHERS THEN APEX_DEBUG.ERROR('Critical error %s', sqlerrm);
        RAISE;
END;