A hint for the “Object foo is not a known entity type” errors from Glassfish

Posted on 26/04/2009 by Tor Henning Ueland

As a JavaEE-codemonkey you have perhaps noticed this error:

java.lang.IllegalArgumentException: Object: Ting@193c227 is not a known entity type.

This will occur when you have redeployed an app f.ex through Eclipse to Glassfish, the Glassfish server has not quite understood that it`s time to update its version, so what you need to do then is to simply restart the server (or domain).

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10 Responses to A hint for the “Object foo is not a known entity type” errors from Glassfish

Phill says:

22/01/2010 at 05:05

Wow Thanks you saved me from going grey :p
Nasseria says:

31/03/2010 at 21:17

Thanks, it was a applicable solution:)
maosmurf says:

10/05/2010 at 23:27

Thanks!

After googling for over 1hr, you had the correct answer
xwrs says:

14/10/2010 at 14:56

Glassfish suxxx
llaith says:

25/11/2010 at 20:15

Again, a simple thing but it worked. After 30 mins of frustration, you saved me at least the same again!

Ta.
1.april says:

17/01/2011 at 21:47

saved the day!! thanks
замена батарей отопления в квартире says:

02/02/2011 at 16:56

ок здорово
Colin says:

03/03/2011 at 14:19

I had this exact problem, but with JDeveloper and its’ integrated Weblogic server. A restart solved it

Thanks!
Bahram Jowharshamshiri says:

28/06/2011 at 13:05

Thanks. You saved me a lot of frustration. I wish someone would create a website for small tips like this one.
Ayesha says:

04/08/2011 at 13:18

I did that anyway and was feeling kinda stupid… then saw ur post.. now i’m like “okay, so thr r more ppl who think like me!!!”