UTL_FILE导出导入数据

--以SYS用户创建目录dir_dump,文件就保存在这个目录下
SQL> create or replace directory dir_dump as '/data/cmssdb';--windows:'F:\app'

Directory created.

--授权对应的操作帐号读和写的权限，这里是operator
SQL> grant read on directory dir_dump to operator;

Grant succeeded.

SQL> grant write on directory dir_dump to operator;

Grant succeeded.

--以operator用户登陆
SQL> connect operator/operation
Error accessing PRODUCT_USER_PROFILE
Warning:  Product user profile information not loaded!
You may need to run PUPBLD.SQL as SYSTEM
Connected.

--创建表BIBI，并加入测试数据
SQL> create table bibi(row_id int,row_name varchar2(10));

Table created.

SQL> insert into bibi values(1,'luochun');

1 row created.

SQL> insert into bibi values(2,'maihy');

1 row created.

SQL> commit;

Commit complete.

/*--该过程负责备份数据到DIR_DUMP目录，名称为bibi.csv
DECLARE lv_file_handle UTL_FILE.file_type;
BEGIN
lv_file_handle := UTL_FILE.FOPEN('DIR_DUMP','bibi.csv','a');

FOR x IN (SELECT ROW_ID,ROW_NAME FROM BIBI) LOOP
  UTL_FILE.PUT_LINE(lv_file_handle,x.ROW_ID || ',' || NVL(x.ROW_NAME,''));
END LOOP;

UTL_FILE.FCLOSE(lv_file_handle);
EXCEPTION WHEN OTHERS THEN
DBMS_OUTPUT.PUT_LINE(SUBSTR(SQLERRM,1,200));
END;
/
*/
--过程完成，转到DIR_DUMP目录查看生成的文件，数据已经产生
[oracle@qaserver oracle]$ cd /data/cmssdb
[oracle@qaserver cmssdb]$ cat bibi.csv
1,luochun
2,maihy
/*

--现在删除BIBI数据，准备将备份的导入
SQL> truncate table bibi;

Table truncated.

/*--这个过程负责读取文件，并导入数据
DECLARE lv_file_handle UTL_FILE.file_type;
lv_row_text VARCHAR2(2000);
lv_row_id PLS_INTEGER;
lv_row_name VARCHAR2(50);
BEGIN
lv_file_handle := UTL_FILE.FOPEN('DIR_DUMP','bibi.csv','r');

LOOP
  BEGIN
   UTL_FILE.GET_LINE(lv_file_handle,lv_row_text);
   lv_row_id := SUBSTR(lv_row_text,1,INSTR(lv_row_text,',',1,1) - 1);
   lv_row_name := SUBSTR(lv_row_text,INSTR(lv_row_text,',',1,1) + 1);
   
   INSERT INTO BIBI VALUES(lv_row_id,lv_row_name);
  EXCEPTION
   WHEN NO_DATA_FOUND THEN
    EXIT;
  END;
END LOOP;

COMMIT;

UTL_FILE.FCLOSE(lv_file_handle);
EXCEPTION WHEN OTHERS THEN
DBMS_OUTPUT.PUT_LINE(SUBSTR(SQLERRM,1,200));
END;
/
*/

--数据已经产生
SQL> SQL> SELECT * FROM BIBI;

    ROW_ID ROW_NAME
---------- --------------------
         1 luochun
         2 maihy

SQL>

 参考：http://www.blogjava.net/sterning/archive/2009/01/10/250793.html