ORA-29547: Java system class not available: oracle/aurora/rdbms/Compiler

Question

Hi experts,
I get the above error when I run the following code using sqlplus:
create or replace and compile java source named "DirList"
  2      as
  3      import java.io.*;
  4      import java.sql.*;
  5
  6      public class DirList
  7      {
  8      public static void getList(String directory)
  9                        throws SQLException
10      {
11         String element;
12
13
14         File path = new File(directory);
15         File[] FileList = path.listFiles();
16         String TheFile;
17         Date ModiDate;
18         #sql { DELETE FROM DIR_LIST};
19
20         for(int i = 0; i < FileList.length; i++)
21         {
22             TheFile = FileList[ i ].getAbsolutePath();
23             ModiDate = new Date(FileList[ i ].lastModified());
24
25             #sql { INSERT INTO DIR_LIST (FILENAME,LASTMODIFIED)
26                    VALUES (:TheFile,:ModiDate) };
27         }
28     }
29    }
30  /
create or replace and compile java source named "DirList"
ERROR at line 1:
ORA-29547: Java system class not available: oracle/aurora/rdbms/CompilerAny body can tell me what to do to run external commands like os commands using pl/sql in details with example.
I will appreciate any sooner response.
Thanks

Answer 1

What is the output of this query?
SQL> select owner, object_name, object_type from dba_objects where object_name = 'oracle/aurora/rdbms/Compiler' ;
OWNER                          OBJECT_NAME                     OBJECT_TYPE
SYS                            oracle/aurora/rdbms/Compiler    JAVA CLASS
PUBLIC                         oracle/aurora/rdbms/Compiler    SYNONYM
2 rows selected.
SQL> disconnect
Disconnected from Oracle9i Enterprise Edition Release 9.2.0.3.0 - Production
With the Partitioning, OLAP and Oracle Data Mining options
JServer Release 9.2.0.3.0 - Production
SQL>