AppletTalk.com Java discussions newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Maximum Heap Size on Windows 2003          AppletTalk.com Forum Index -> JVM, native methods and hardware View previous topic :: View next topic   Author Message Yannick ROGER Guest Posted: Tue Apr 26, 2005 7:57 am    Post subject: Maximum Heap Size on Windows 2003 Hi, I an working with J2SE 1.4.2 (exactly 1.4.2_08) on Windows 2003 Server SP1 The server i use have 4Go of RAM.. As Windows 2003 is a 32bits OS, the limit memory size for jvm is supporsed to be 2048 Mo. Am I right? When i try to set -Xmx parameter to 2048m, i receive the following message: "Error occurred during initialization of VM Could not reserve enough space for object heap" If i try reducing this parameter to -Xmx1536m, it did not work too. The first value to make it work was -Xmx1408m. How can I do to make it work allowing 2040Mo to the jvm? Regards, Yannick Back to top Steve W. Jackson Guest Posted: Tue Apr 26, 2005 1:40 pm    Post subject: Re: Maximum Heap Size on Windows 2003 In article <d4kqtj$611$1 (AT) reader1 (DOT) imaginet.fr>, "Yannick ROGER" <yroger (AT) sqli (DOT) com> wrote: Quote: Hi, I an working with J2SE 1.4.2 (exactly 1.4.2_08) on Windows 2003 Server SP1 The server i use have 4Go of RAM.. As Windows 2003 is a 32bits OS, the limit memory size for jvm is supporsed to be 2048 Mo. Am I right? When i try to set -Xmx parameter to 2048m, i receive the following message: "Error occurred during initialization of VM Could not reserve enough space for object heap" If i try reducing this parameter to -Xmx1536m, it did not work too. The first value to make it work was -Xmx1408m. How can I do to make it work allowing 2040Mo to the jvm? Regards, Yannick You can't use 2048. Windows itself has an issue with large memory sizes, if I correctly remember something I read on the subject. I don't have immediate access to a 2003 box to check, but I thought I recalled testing and finding that the limitation there was the same as on my XP system, which is 1578m. = Steve = -- Steve W. Jackson Montgomery, Alabama Back to top wangzaixiang@gmail.com Guest Posted: Wed Apr 27, 2005 1:37 pm    Post subject: Re: Maximum Heap Size on Windows 2003 You cant use 2G memory because of that 2G is the total usable memory for user-code, which including: Quote: the JVM's code and data itself the JVM's management data strutrue the Heap. so the maxinum Heap size should less than 2G. Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First         AppletTalk.com Forum Index -> JVM, native methods and hardware All times are GMT Page 1 of 1   Jump to: Select a forum Java Newsgroups----------------Java DiscussionsWeb-based java games comp.lang.java 3D Graphics API's for Java Java: Support and criticism Java System Announcements comp.lang.java.api JavaBeans Java and CORBA Java and Databases comp.lang.java.developer Java GUI Toolkits Java Help comp.lang.java.javascript JVM, native methods and hardware comp.lang.java.misc Java Language Programming Security and Java comp.lang.java.setup Java Software Tools comp.lang.java.tech ibm.software.java.linux  Non-English Java Newsgroups----------------Java Language (German)Language Java (Français)Java (Italian)  You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum Powered by phpBB © 2001, 2006 phpBB Group SEO toolkit © 2004-2006 webmedic.