数据复制set serveroutput on declare begin update employees set employee_name=Mike where employee_id=1001; if SQL%FOUND then dbms_output.put_line(Name is updated); else dbms_output.put_line(Name is not updated); end if; end; / set serveroutput on declare begin for tableInfo in (select * from user_tables) loop dbms_output.put_line(tableInfo.table_name); end loop; exception when others then dbms_output.put_line(sqlerrm); end; / 1.2.3.4.5.6.7.8.9.10.11.12.13.14.15.16.17.18.19.20.21.22.23.24.25.26.27.28.29.30.31.32.33.34.35.36.37.38.39.40.41.42.43.