Question

我已经使用sqlplus为用户maciek定义了具有权限的文件夹。

SQL> CREATE OR REPLACE DIRECTORY test AS '\home\oracle\Desktop\test';

SQL> GRANT READ, WRITE ON DIRECTORY test to maciek;

我之前手动创建的文件夹。当我运行以下脚本时。

DECLARE
OBRAZEK_lob blob;
obrazek_SI si_stillimage;
DANE_PLIKU BFILE := BFILENAME('test','Pojazd.jpg');
BEGIN
  DBMS_LOB.CREATETEMPORARY(OBRAZEK_lob, TRUE);
  DBMS_LOB.fileopen(DANE_PLIKU, DBMS_LOB.file_readonly);
  DBMS_LOB.LOADFROMFILE(OBRAZEK_lob, DANE_PLIKU, DBMS_LOB.GETLENGTH(DANE_PLIKU));
  DBMS_LOB.FILECLOSE(DANE_PLIKU);
  obrazek_SI :=SI_stillimage(obrazek_lob);
  INSERT INTO foto_oferty_si (idk,nazwa_pliku,opis,obrazek,oferta_id) VALUES(1, 'Pojazd.jpg','Autko', obrazek_si, 1);
  DBMS_LOB.FREETEMPORARY(OBRAZEK_lob);
COMMIT;
END;

我收到以下错误消息。

Error report:
ORA-22285: non-existent directory or file for FILEOPEN operation
ORA-06512: at "SYS.DBMS_LOB", line 805
ORA-06512: at line 7
22285. 00000 -  "non-existent directory or file for %s operation"
*Cause:    Attempted to access a directory that does not exist, or attempted

问题是Oracle没有看到我手动创建的文件夹吗？按下面的命令创建自动指向路径的文件夹？

CREATE OR REPLACE DIRECTORY test AS '\home\oracle\Desktop\test';

Answer 1

从评论中，您在VBox中使用Oracle数据库，并希望从主机桌面加载图像。

这是两个选项。

将主机目录映射到VBox，然后继续执行上面的代码，但将目录调整为映射到驱动器中。

auto-mounted shared folders are mounted into the /media directory, along with the prefix sf_

制作此示例/ media / sf_klrice 在create directory命令中使用它。

VBox参考： https://www.virtualbox.org/manual/ch04.html#sf_mount_auto

使用允许JavaScript逻辑的SQLcl。代码不是PLSQL和目录，代码看起来就像下面的代码片段。我的博客上有一个更完整的写作和示例：http://krisrice.io/2015-10-14-sqlcl-blob-loading-from-file/

/*
*  Function to take in a filename and add or create it to a map
*  with bind variables
*/
function addBindToMap(map,bindName,fileName){
     /*  conn is the actual JDBC connection */
     var b = conn.createBlob();

     var out = b.setBinaryStream(1);

     var path = java.nio.file.FileSystems.getDefault().getPath(fileName);

     /* slurp the file over to the blob */
     java.nio.file.Files.copy(path, out);
     out.flush();

     if ( map == null ) {
         /* java objects as binds needs a hashmap */
         var HashMap = Java.type("java.util.HashMap");
         map = new HashMap();
     }
     /* put the bind into the map */
     map.put("b",b);
 return map;
}


/* File name */
var file = "/Users/klrice/workspace/raptor_common/10_5.log";

/* load binds */
binds = addBindToMap(null,"b",file);

/* add more binds */
binds.put("path",file);

/* exec the insert and pass binds */
var ret = util.execute("insert into k(path,blob_content,when) values(:path , :b, sysdate)",binds);

/* print the results */
sqlcl.setStmt("select path,dbms_lob.getlength(blob_content) from k order by when desc;");

sqlcl.run();

Answer 2

有趣，但必须在capital letters中指定oracle目录名称，使用TEST代替test。

Oracle无法读取SI_StillImage的图片

2 个答案: