begin
dbms_xdb.createResource('/sys/acls/ro_anonymous_acl.xml',
'<acl description="Read-only privileges to anonymous"
       xmlns="http://xmlns.oracle.com/xdb/acl.xsd"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://xmlns.oracle.com/xdb/acl.xsd
       http://xmlns.oracle.com/xdb/acl.xsd">
 <ace>
  <grant>true</grant>
  <principal>ANONYMOUS</principal>
  <privilege>
    <read-properties/>
    <read-contents/>
    <resolve/>
  </privilege>
 </ace>
</acl>');

dbms_xdb.setacl('/i', '/sys/acls/ro_anonymous_acl.xml');

end;
/

/xdbconfig/sysconfig/protocolconfig/httpconfig/allow-repository-anonymous-access => true