JDeveloper啟動時老是報錯－解決方法

前兩天在oracle上下的jdeveolper studio 10.1.3,解壓後執行jdeveloper.exe,老是報:Unable to create an instance of the Java Virtual Machine Located at path:....jdkjrebinclientjvm.dl[@more@]

Unable to create an instance of the Java Virtual Machine Located at path: ....jdkjrebinclientjvm.dll

1：start JDeveloper by running the jdev.exe file in the jdev/bin subdirectory，錯誤提示：Could not reserve enough space for object heap 說明記憶體不足

2：Error occoured during initialization of VM
Could not reserve enough space for object heap

Reduce the value of
AddVMOption -Xmx512M
in jdev.conf
Set
AddVMOption -Xmx256M
or
AddVMOption -Xmx128M