Oracle BLOB Insert

connect system/bitservice;

create or replace directory BlobFile as 'C:\TEMP';
grant read on directory BlobFile to tt;

connect tt/bitservice;

Create Table blobTest(
 filename varchar2(200),
 filedesc varchar2(200),
 filebody blob
);

Create Or Replace Procedure Proc_loadBlob(p_filename varchar2,p_filedesc varchar2)
Is
 src_file bfile;
 dst_file BLOB;
 lgh_file binary_integer;
Begin
 --src_file := bfilename('BlobFile',p_filename);
 src_file := bfilename('BLOBFILE',p_filename);
 
 insert into blobTest(filename,filedesc,filebody)
  values (p_filename,p_filedesc,EMPTY_BLOB())
   returning filebody into dst_file;
 
 dbms_lob.fileopen(src_file,dbms_lob.file_readonly);
 lgh_file := dbms_lob.getlength(src_file);
 dbms_lob.loadfromfile(dst_file,src_file,lgh_file);
 
 update blobTest
 set filebody = dst_file
 where filename = p_filename;
 
 dbms_lob.fileclose(src_file);
End Proc_loadBlob;
/
Show Err;

exec Proc_loadBlob('girls-nude-new101.jpg','桌面-美女-01');
exec Proc_loadBlob('DSC04894.JPG','宝宝照片-01');
exec Proc_loadBlob('PA030058.JPG','白鹅-01');

错误一：
ORA-22285: 对不存在的目录或文件进行 FILEOPEN 操作
ORA-06512: 在 "SYS.DBMS_LOB", line 523
ORA-06512: 在 "TT.PROC_LOADBLOB", line 12
ORA-06512: 在 line 2

解决方案：
 写法一：src_file := bfilename('BlobFile',p_filename);  create or replace directory "BlobFile" as 'C:\TEMP';
 写法二：src_file := bfilename('BLOBFILE',p_filename);  create or replace directory BlobFile as 'C:\TEMP';

错误二：
ORA-06502: PL/SQL: 数字或值错误 : invalid LOB locator specified: ORA-22275
ORA-06512: 在 "SYS.DBMS_LOB", line 637
ORA-06512: 在 "TT.PROC_LOADBLOB", line 14
ORA-06512: 在 line 2

解决方案：
 缺少语句：returning filebody into dst_file;

Blob数据类型支持：

create table table_name as select * from old_table_name;

update table1 set blob_column = (select new_blob_column from table2 where ******) where ******