Installing the XML & JAVA Components on Oracle Database

Shutdown the instance and then create and run the following sql script from a new sqlplus session:

-- Start of File full_rmjvm.sql
spool full_rmjvm.log
set echo on
connect / as sysdba
startup mount
alter system set "_system_trig_enabled" = false scope=memory;
alter system enable restricted session;
alter database open;
@?/rdbms/admin/catnoexf.sql
@?/rdbms/admin/catnojav.sql
@?/xdk/admin/rmxml.sql
@?/javavm/install/rmjvm.sql
truncate table java$jvm$status;
select * from obj$ where obj#=0 and type#=0;
delete from obj$ where obj#=0 and type#=0;
commit;
select owner, count(*) from all_objects
where object_type like '%JAVA%' group by owner;
select obj#, name from obj$
where type#=28 or type#=29 or type#=30 or namespace=32;
select o1.name from obj$ o1,obj$ o2
where o1.type#=5 and o1.owner#=1 and o1.name=o2.name and o2.type#=29;
shutdown immediate
set echo off
spool off
exit
-- End of File full_rmjvm.sql

OR

- Start of File full_jvminst.sql
spool full_jvminst.log;
set echo on
connect / as sysdba
startup mount
alter system set "_system_trig_enabled" = false scope=memory;
alter database open;
select obj#, name from obj$
where type#=28 or type#=29 or type#=30 or namespace=32;
@?/javavm/install/initjvm.sql
select count(*), object_type from all_objects
where object_type like '%JAVA%' group by object_type;
@?/xdk/admin/initxml.sql
select count(*), object_type from all_objects
where object_type like '%JAVA%' group by object_type;
@?/xdk/admin/xmlja.sql
select count(*), object_type from all_objects
where object_type like '%JAVA%' group by object_type;
@?/rdbms/admin/catjava.sql
select count(*), object_type from all_objects
where object_type like '%JAVA%' group by object_type;
@?/rdbms/admin/catexf.sql
select count(*), object_type from all_objects
where object_type like '%JAVA%' group by object_type;
shutdown immediate
set echo off
spool off
exit
-- End of File full_jvminst.sql


You can also get the same tips from original Oracle metalink notes:
Subject: How to Reload the JVM in 10.1.0.X and 10.2.0.X
Doc ID: Note:276554.1