执行在 Oracle 中生成 csv 文件的过程时目录路径无效(在 Windows 中)
我有一个程序
create or replace procedure dump_table_to_csv( p_tname in varchar2,
2 p_dir in varchar2,
3 p_filename in varchar2 )
4 is
5 l_output utl_file.file_type;
6 l_theCursor integer default dbms_sql.open_cursor;
7 l_columnValue varchar2(4000);
8 l_status integer;
9 l_query varchar2(1000)
10 default 'select * from ' || p_tname;
11 l_colCnt number := 0;
12 l_separator varchar2(1);
13 l_descTbl dbms_sql.desc_tab;
14 begin
15 l_output := utl_file.fopen( p_dir, p_filename, 'w' );
16 execute immediate 'alter session set nls_date_format=''dd-mon-yyyy hh24:mi:ss''
';
17
18 dbms_sql.parse( l_theCursor, l_query, dbms_sql.native );
19 dbms_sql.describe_columns( l_theCursor, l_colCnt, l_descTbl );
20
21 for i in 1 .. l_colCnt loop
22 utl_file.put( l_output, l_separator || '"' || l_descTbl(i).col_name || '"'
);
23 dbms_sql.define_column( l_theCursor, i, l_columnValue, 4000 );
24 l_separator := ',';
25 end loop;
26 utl_file.new_line( l_output );
27
28 l_status := dbms_sql.execute(l_theCursor);
29
30 while ( dbms_sql.fetch_rows(l_theCursor) > 0 ) loop
31 l_separator := '';
32 for i in 1 .. l_colCnt loop
33 dbms_sql.column_value( l_theCursor, i, l_columnValue );
34 utl_file.put( l_output, l_separator || l_columnValue );
35 l_separator := ',';
36 end loop;
37 utl_file.new_line( l_output );
38 end loop;
39 dbms_sql.close_cursor(l_theCursor);
40 utl_file.fclose( l_output );
41
42 execute immediate 'alter session set nls_date_format=''dd-MON-yy'' ';
43 exception
44 when others then
45 execute immediate 'alter session set nls_date_format=''dd-MON-yy'' ';
46 raise;
47 end;
48 /
当我尝试执行时
exec dump_table_to_csv('emp', 'C:\Temp','a.txt')
出现错误 (错误):执行语句时出错:ORA-29280:无效的目录路径 ORA-06512:位于“LCM_EVAL.DUMP_TABLE_TO_CSV”,第 59 行 ORA-06512:位于第 2 行
可能的问题是什么?
I have a procedure
create or replace procedure dump_table_to_csv( p_tname in varchar2,
2 p_dir in varchar2,
3 p_filename in varchar2 )
4 is
5 l_output utl_file.file_type;
6 l_theCursor integer default dbms_sql.open_cursor;
7 l_columnValue varchar2(4000);
8 l_status integer;
9 l_query varchar2(1000)
10 default 'select * from ' || p_tname;
11 l_colCnt number := 0;
12 l_separator varchar2(1);
13 l_descTbl dbms_sql.desc_tab;
14 begin
15 l_output := utl_file.fopen( p_dir, p_filename, 'w' );
16 execute immediate 'alter session set nls_date_format=''dd-mon-yyyy hh24:mi:ss''
';
17
18 dbms_sql.parse( l_theCursor, l_query, dbms_sql.native );
19 dbms_sql.describe_columns( l_theCursor, l_colCnt, l_descTbl );
20
21 for i in 1 .. l_colCnt loop
22 utl_file.put( l_output, l_separator || '"' || l_descTbl(i).col_name || '"'
);
23 dbms_sql.define_column( l_theCursor, i, l_columnValue, 4000 );
24 l_separator := ',';
25 end loop;
26 utl_file.new_line( l_output );
27
28 l_status := dbms_sql.execute(l_theCursor);
29
30 while ( dbms_sql.fetch_rows(l_theCursor) > 0 ) loop
31 l_separator := '';
32 for i in 1 .. l_colCnt loop
33 dbms_sql.column_value( l_theCursor, i, l_columnValue );
34 utl_file.put( l_output, l_separator || l_columnValue );
35 l_separator := ',';
36 end loop;
37 utl_file.new_line( l_output );
38 end loop;
39 dbms_sql.close_cursor(l_theCursor);
40 utl_file.fclose( l_output );
41
42 execute immediate 'alter session set nls_date_format=''dd-MON-yy'' ';
43 exception
44 when others then
45 execute immediate 'alter session set nls_date_format=''dd-MON-yy'' ';
46 raise;
47 end;
48 /
When I try to execute
exec dump_table_to_csv('emp', 'C:\Temp','a.txt')
I am getting the error
(Error): Error executing statement: ORA-29280: invalid directory path ORA-06512: at "LCM_EVAL.DUMP_TABLE_TO_CSV", line 59 ORA-06512: at line 2
What is the possible problem?
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错误消息非常清楚:路径无效。很可能这只是一个拼写错误:
C:/Temp
不存在,但也许C:\Temp
存在。这也可能是赠款的问题。在 PL/SQL 中,只有在被授予特定权限的情况下,您才可以访问磁盘。
UTL_FILE
文档< /a> 解释如何授予对 PL/SQL 的访问权限:(UTL_FILE_DIR
系统参数。请注意,这是一个系统范围的参数,所有用户都可以写入和读取此目录。The error message is pretty clear: the path is invalid. Most probably it is just a typo:
C:/Temp
doesn't exist, but maybeC:\Temp
does.It could also be a problem with grants. In PL/SQL you only have access to the disk if you have been given a specific right. The
UTL_FILE
documentation explains how to grant access to PL/SQL:UTL_FILE_DIR
system parameter. Be careful, this is a system-wide parameter, all users will be able to write and read this directory.您应该首先创建一个 Oracle DIRECTORY 对象,然后在调用
fopen
时引用该对象,而不是传递文件系统路径。更多信息:http://www.orafaq.com/wiki/Oracle_directory
You should create an Oracle DIRECTORY object first, then refer to that object in the call to
fopen
instead of passing the filesystem path.More info: http://www.orafaq.com/wiki/Oracle_directory
与 UTL_FILE 相关的任何事情都发生在数据库服务器上,而不是客户端上。确保服务器上存在该目录,并且 Oracle 用户有权写入该目录。
Anything to do with UTL_FILE happens on the database server, not the client. Make sure the directory exists on the server, and that the Oracle user has permission to write to it.