https://community.hpe.com/t5/operating-system-hp-ux/java-application-and-chatr/m-p/3553925#M225428 Hi,<BR />I am running a java application which is having a initialization script in which I pass startup parameters like Xmn &amp; Xmx i.e. the minimum and maximum memory and other parameters.<BR /><BR />My java application was compiled with 32 bit compiler, now If I want to start this application to use large memory heap of 4GB and if I specify Xmn=3000M and Xmx = 3072M and starte the application it fails with the following error message.<BR /><BR />"Error occurred during initialization of VM<BR />Could not reserve enough space for gen1 generation heap"<BR /><BR />Can anybody tell me can I start a 32 bit application to use 4GB, my JVM and OS are 64 bit and installed all the required patches to run jvm to enable 4GB Heap on HP box.<BR /><BR />What about chatr command and which binary should I modify using chatr.<BR /><BR />What about -d64 option in startup parameter for JVM to run it as 64 bit.<BR /><BR />Thanks,<BR />Amit.<BR /> Sun, 29 May 2005 18:26:40 GMT Amit Dixit_2 2005-05-29T18:26:40Z https://community.hpe.com/t5/operating-system-hp-ux/java-application-and-chatr/m-p/3553925#M225428 Hi,<BR />I am running a java application which is having a initialization script in which I pass startup parameters like Xmn &amp; Xmx i.e. the minimum and maximum memory and other parameters.<BR /><BR />My java application was compiled with 32 bit compiler, now If I want to start this application to use large memory heap of 4GB and if I specify Xmn=3000M and Xmx = 3072M and starte the application it fails with the following error message.<BR /><BR />"Error occurred during initialization of VM<BR />Could not reserve enough space for gen1 generation heap"<BR /><BR />Can anybody tell me can I start a 32 bit application to use 4GB, my JVM and OS are 64 bit and installed all the required patches to run jvm to enable 4GB Heap on HP box.<BR /><BR />What about chatr command and which binary should I modify using chatr.<BR /><BR />What about -d64 option in startup parameter for JVM to run it as 64 bit.<BR /><BR />Thanks,<BR />Amit.<BR /> Sun, 29 May 2005 18:26:40 GMT https://community.hpe.com/t5/operating-system-hp-ux/java-application-and-chatr/m-p/3553925#M225428 Amit Dixit_2 2005-05-29T18:26:40Z