Oracle提供的文件操作包UTL_FILE包中的UTL_FILE.FOPEN負責打開一個文件。
UTL_FILE.FOPEN(location in varchar2, filename in varchar2,open_mode in varchar2) return FILE_TYPE;
Location 是路徑參數,
FILENAME 是文件名,
OPEN_MODE是打開模式,'R'是讀文本,'W'是寫文本,'A'是附加文本,參數不分大小寫,如果指定'A'但是文件不存在,它會用'W'先創建出來,'W'有覆蓋的功能;
其中的location並不能簡單的指定爲'D:\temp'等路徑,要建立一個DIRECTORY變量並付給權限(必須以DBA身份登錄):
Sql代碼
- create or replace directory D_OUTPUT as 'D:\TEMP';
- grant read,write on directory D_OUTPUT to testdb;
- GRANT EXECUTE ON utl_file TO testdb;
之後就可以用UTL_FILE包建立文件了
Sql代碼
- V_FILE UTL_FILE.FILE_TYPE;
- V_FILE := UTL_FILE.FOPEN('D_OUTPUT', 'Data.txt', 'w');
就可以在數據庫服務器的D:\TEMP建立Data.txt
源文檔<http://lveyo.javaeye.com/blog/351416>
createor replace procedure PRO_TO_TXT(FILE_OWNER VARCHAR2,FILE_NAME VARCHAR2)
is
file_handle utl_file.file_type;
STOR_TEXT VARCHAR2(4000);
N NUMBER;
I NUMBER;
begin
I:=1;
SELECT MAX(LINE) INTO N FROM ALL_SOURCE WHERE OWNER='' || FILE_OWNER || '' AND NAME='' || FILE_NAME || '' AND TYPE= 'PROCEDURE';
file_handle:=utl_file.fopen( '/oradata/procedure_bak','zhfx117.txt', 'A');
utl_file.put_line(file_handle, 'PROCEDURE NAME: '||FILE_NAME);
WHILE I<=N LOOP
SELECT TEXT INTO STOR_TEXT FROM ALL_SOURCE WHERE OWNER=FILE_OWNER
AND NAME=FILE_NAME AND TYPE= 'PROCEDURE' AND LINE= I;
I:=I+1;
utl_file.put_line(file_handle,stor_text);
END LOOP;
utl_file.fclose(file_handle);
commit;
end PRO_TO_TXT;