Java and JavaScript in the Database

Hi,

I don't know what happened that I get invalid classes on my database..

I have uploaded JAR file several months ago with loadjava and recompile classes on database side and all worked ok..

Now the classes are invlaid...

I tryed to drop all classes and repeat the procedure with load java... with:

c:\loadjava -force -genmissing -grant r_inis_prod -user insurance2/i@MYDB -verbose C:\iText-2.0.7.jar

If I look in Toad I get: 398 invalid classes...

How to "recompile" this classes?

I have also used this approach:

select 'alter java class '||'"'||object_name||'"'|| ' compile;'

from user_objects

where status <> 'VALID'

And object_type ='JAVA CLASS';

But It's not working...

thank you for any help...