Hi Vedrin,

On Thu, 7 Jul 2011 12:00:00 +0300, Vedrin Jeliazkov
<vedrin.jeliazkov at gmail.com> wrote:
> After successful deletion of about 2500 policies, the Policy server
> has started returning systematically the following NPE:
> 
> - - - - - - - - 8< - - - - - - - -
> 25373568 ["http-bio-8080"-exec-1067] ERROR
> org.apache.wink.server.internal.RequestProcessor -
> WebApplicationException (500 - Internal Server Error) occured during
> the handlers chain invocation
> javax.ws.rs.WebApplicationException
> 	at org.opentox.pol.PolServiceImpl.getPolID(PolServiceImpl.java:432)

If line numbers still match with mine, the code fragment would be:

      try {
        output =
output.substring(output.indexOf("<Policies>"),output.length()); //
incorporated XML formatting
      } catch (StringIndexOutOfBoundsException e) {
        throw new
WebApplicationException(Response.status(500).entity("XML serialization
failed.\n\n" + output + "\n\n").type("text/plain").build());
      }

So, can you find a StringIndexOutOfBoundsException in the logs? That
would mean the corresponding policy has no such substring "Policies". 
It is unfortunately rather easy to feed OpenAM syntactically invalid
policies, perhaps this has happened in your case, too.

Andreas