Error while connecting to Visual administrator - Server0 getting Restarted

Question

Hi Experts,
Kindly help me to Tune the JVM Parameters For AS Java ( Enterprise Portal 7)
We are Having our Development Portal on a 32-bit Machine and recently we have migrated the same to a 64-Bit with SAP OS/DB. We are Using IBM DB2 9.1 Fix pack 2.
Now I have to Configure the Java Virtual machine (JVM) Parameters for the EP instance in the 64-bit Hardware. The Hardware details are as Follows :
Ram - 10 GB
Paging Memory - 25 GB
OS - Win 2k3 - SP2
HDD - 500 GB
Current JVM Parameters : For (Server0)
-XX:MaxPermSize=256M
-XX:PermSize=256M
-Xms2048M
-Xmx2048M
-XX:NewSize=171M
-XX:MaxNewSize=171M
Now when iam connecting to Visual Administrator (VA) with administrator it is connecting upto 20 % - 25 % and giving a error - (Ping Timeout - connection to server Lost) and the Server0 is Restarting.
i have modified Xmx and Xmx to 3072 and restarted the J2ee Engine. And now for some time it is ok and again giving the same error.
And modifying the Server0 JVM parameters is sufficient or we have to modify Instance --> Servers General JVM Parameters Too ?**
i Believe this is the problem with JVM Parameters. Correct me if iam wrong
Please Help me to solve this Issue
Thank in Advance
P.S.V Santosh Chaitanya
SAP Basis Consultant
Mobile - [phone]

Answer 1

Hi Santosh,
The some Memory parameter you set is not correct
-XX:MaxPermSize=256M
-XX:PermSize=256M
-Xms2048M
-Xmx2048M
-XX:NewSize=171M
-XX:MaxNewSize=171M
it should be as below
-XX:MaxPermSize=512M
-XX:PermSize=512M
-Xms2048M
-Xmx2048M
-XX:NewSize=320M
-XX:MaxNewSize=320M
pls check the note suggest earlier.
Thanks
Anil