Two anonymous plsql blocks checking those tables (starting with "DBA_HIST_" in SYS schema of oracle database) returned line is 0

plsql_static_cursor.sql

SET SERVEROUTPUT ON;

DECLARE
  v_sql   VARCHAR2(200);
  tab_num NUMBER;
  CURSOR cur_dba_hist IS
  SELECT table_name
  FROM dict
  WHERE table_name LIKE '%DBA_HIST_%'
  ORDER BY 1;
BEGIN
  FOR v_dba_hist IN cur_dba_hist
  LOOP
    v_sql := 'SELECT COUNT(*) INTO tab_num FROM ' || v_dba_hist.table_name;
    EXECUTE IMMEDIATE v_sql;
    IF tab_num = 0 THEN
      DBMS_OUTPUT.PUT_LINE('The lines of ' || v_dba_hist.table_name || ' has been returned 0.');
    END IF;
  END LOOP;
END;
/

DECLARE
*
ERROR at line 1:
ORA-00905: missing keyword
ORA-06512: at line 15

-- The updated version after replied to me on https://www.freelists.org/post/oracle-l/Why-these-two-methods-using-cursor-to-acquire-table-name-and-then-using-this-table-name-to-select-its-returned-lines-is-always-encoutered-a-weird-error,1.
-- on Oracle-L with FreeLists.org.

SET SERVEROUTPUT ON;

DECLARE
  v_sql   VARCHAR2(200);
  tab_num NUMBER;
  CURSOR cur_dba_hist IS
  SELECT table_name
  FROM dict
  WHERE table_name LIKE '%DBA_HIST_%'
  ORDER BY 1;
BEGIN
  FOR v_dba_hist IN cur_dba_hist
  LOOP
    v_sql := 'SELECT COUNT(*) FROM ' || v_dba_hist.table_name;
    EXECUTE IMMEDIATE v_sql INTO tab_num;
    IF tab_num = 0 THEN
      DBMS_OUTPUT.PUT_LINE('The lines of ' || v_dba_hist.table_name || ' has been returned 0.');
    END IF;
  END LOOP;
END;
/