11.5.3 : Invalid JAVA CLASS /b31c4e07_MyFileAdapter after patch 1779336

Hi,

New invalid object after applying the patch 1779336 and the error message is as  following:
  SQL> alter JAVA CLASS  /b31c4e07_MyFileAdapter resolve;
  alter JAVA CLASS  /b31c4e07_MyFileAdapter resolve
                    *
  ERROR at line 1:
  ORA-29501: invalid or missing Java source, class, or resource name
 
1. What's the  java class /b31c4e07_MyFileAdapter ?
2. How to alter it to be valid?

Thank you.