IPlanet-WebServer-Enterprise/6.0SP6 for JDK1.6 upgrade issue

Question

I want to upgrade iPlanet Web Server 6.0 with JDK/jre 6.0. currently iPlanet Web Server 6.0 is refferring to JDK1.5.0_17 in our lab. I see following error in logs.Any ideas which state is this upgrade is valid or a resolution for the below error would be great.
I tried increasing stack size(StackSize 7168000 in magnus.conf),increasing Sun os filedescriptors and stacksize,jvm.minHeapSize=8388608 and jvm.maxHeapSize=33554432( in jvm12.conf)
Thanks in advance
iPlanet-WebServer-Enterprise/6.0SP6 B06/23/2003 14:40
[18/Dec/2009:09:44:27] info ( 3351): Installing a new configuration
[18/Dec/2009:09:44:27] info ( 3351): [LS ls1] http://stg-bobowww02.attws.com, port 9090 ready to accept requests
[18/Dec/2009:09:44:27] info ( 3351): A new configuration was successfully installed
[18/Dec/2009:09:44:27] config ( 3351): Error occurred during initialization of VM
[18/Dec/2009:09:44:27] config ( 3351): java.lang.StackOverflowError
[18/Dec/2009:09:44:27] config ( 3351):
[18/Dec/2009:09:44:27] config ( 3351): at java.lang.String.hashCode(String.java:1482)
[18/Dec/2009:09:44:27] config ( 3351): at java.util.Hashtable.get(Hashtable.java:334)
[18/Dec/2009:09:44:27] config ( 3351): at java.util.Properties.getProperty(Properties.java:932)
[18/Dec/2009:09:44:27] config ( 3351): at java.lang.System.getProperty(System.java:653)
[18/Dec/2009:09:44:27] config ( 3351): at java.lang.Class$3.run(Class.java:2897)
[18/Dec/2009:09:44:27] config ( 3351): at java.security.AccessController.doPrivileged(Native Method)
[18/Dec/2009:09:44:27] config ( 3351): at java.lang.Class.checkInitted(Class.java:2881)

Answer 1

Thanks for the reply.
curretnly i see from logs we have servicepack 6 for iplanet6.0 in my box. If i upgrade with new servicepack can i use JDK1.6? because i don't see that kind of statement with even in any of the documents.The documents only talk upto 1.4.2
secondly upgrading to newer version,I think for this we need to take new licences and is there will be a cost factor for 7.0 upgrade.Because i see the free download is only for 60 day evaluation. For upgradation i need to talk to my management for getting approval i need to atleast show them we cannot do it with the existing 6.0 server with SP6.
I use the default value intially,and i was getting the StackOverFlow error.Some sites suggested in increasing the stacksize value for remedy to StackOverFlow error.So i increased it in an increments of 1MB. And thought this would be the peak value and stopped over there.