查询oracle库下哪些表有数据！

方案一：

 

SELECT table_name, nvl(num_rows,1)
FROM dba_tables t where t.owner = 'SCOTT'; -- 用户名一定要大写

 

 

方案二：

 

/*
如下语句可直接列出对应报表:
(若在SQL*PLUS中执行请先输入SET SERVEROUTPUT ON)
*/
DECLARE
  v_table tabs.table_name%TYPE;
  v_sql   VARCHAR2(888);
  v_q     NUMBER;
  CURSOR c1 IS
    SELECT table_name tn FROM tabs;
  TYPE c IS REF CURSOR;
  c2 c;
BEGIN
  DBMS_OUTPUT.PUT_LINE('以下为非空数据表的表名:');
  FOR r1 IN c1 LOOP
    v_table :=r1.tn;
    v_sql :='SELECT COUNT(*) q FROM '||v_table;
    OPEN c2 FOR v_sql;
    LOOP
      FETCH c2 INTO v_q;
      EXIT WHEN c2%NOTFOUND;
      IF v_q>0 THEN
        DBMS_OUTPUT.PUT_LINE(v_table);
      END IF;
    END LOOP;
    CLOSE c2;
  END LOOP;
EXCEPTION
  WHEN OTHERS THEN DBMS_OUTPUT.PUT_LINE('Error occurred');
END;
/