Today is Sunday, 10th March 2019

Archive for June, 2010


Eclipse Developer Conferences

Save the dates. Great conferences!

Eclipse Summit Europe 2010

EclipseCon 2011




GlassFish v2: Installing two Windows Services on same machine

I had a requirement to install two separate instances of GlassFish v2 on the same box. I initially looked at using separate domains but for infrastructure reasons, I needed to separate installations (long story).



Blank Page on GlassFish v3 Admin Console

I recently encountered a strange error with GlassFish v3. I installed GlassFish on one of my test servers. The installation went fine. Then I attempted to log into the Admin Console at http://localhost:4848.  The page informed me that it was initializing….then all of sudden the page went blank. I tried reloading but encountered the same problem.

I checked the server logs to see if anything was funny. I found the following:

After poking around and Googling, I found that this problem can be solved by updating to Java 6 Update 17+. Hmmm, strange. My test box had an older version of the JDK, Java 6 Update 5 to be exact. I upgraded to the latest Java 6 update (20, at the time of this writing).  Now everything works just fine.

IMHO, the GlassFish admin app should at least perform a version check or give a meaningful error message. Without a proper error message, the user has no idea what went wrong.

Anyways, hope this helps.

Update:

I dug thru the documentation for GlassFish v3. The docs provide the system requirements and list JDK 1.6.0_17 as a minimum. RTFM 🙂