Ulimit(stack) and ulimit(nofiles) needs to be changed.

root@iibtreasury2 # ulimit -a
time(seconds) unlimited
file(blocks) unlimited
data(kbytes) unlimited
stack(kbytes) 8192
coredump(blocks) unlimited
nofiles(descriptors) 1024
memory(kbytes) unlimited
root@iibtreasury2 #
And
root@iibtreasury1 # ulimit -Ha
core file size (blocks, -c) unlimited
data seg size (kbytes, -d) unlimited
file size (blocks, -f) unlimited
open files (-n) 65536
pipe size (512 bytes, -p) 10
stack size (kbytes, -s) unlimited
cpu time (seconds, -t) unlimited
max user processes (-u) 16384
virtual memory (kbytes, -v) unlimited
root@iibtreasury1 #
how to:-
1)Increase the ulimit(STACK) to a minimum of 32768
2)Increase the ulimit(NOFILES) to a minimum of 4096
permanently.
these are entries in /etc/system
set noexec_user_stack=1
set max_nprocs = 30000
set maxuprc = 16384
set rlim_fd_cur=1024
set shmsys:shminfo_shmmax=12884901888

well, after hours of searching around on the web and just after posting my question I now finally found this:
http://www.sapgeek.net/2010/10/sap-j2ee-engine-db-connection/
Using the configtool.bat (logged in with windows account <SID>adm and startet it from E:\usr\sap\<SID>\Jxx\j2ee\configtool) I was able to edit the connection string accordingly.
Now j2ee starts up properly.
Regards
Renaud

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