JVM not found during installation domino server 8.5.2

hi

i have installed java-6-sun then i have launched as root the command /linux/domino/tools/ java -jar setup.jar -console

the console opens and asks me for configuration untilt the toolbar appears to 0% and give me error -JVM not found

in dominoinstallation.log there is this:

anybody can help me please?

(Jan 3, 2011 11:01:12 PM), , com.installshield.product.actions.UninstallerJVMRes

olution, dbg.jvm, attempting to use the current JVM

(Jan 3, 2011 11:01:12 PM), , com.installshield.product.actions.UninstallerJVMRes

olution, dbg.jvm, searching for a JVM

(Jan 3, 2011 11:01:12 PM), , com.ibm.wizard.platform.linux.LinuxJVMServiceImpl,

dbg.jvm, executing launcher to resolve JVM

(Jan 3, 2011 11:01:12 PM), , com.ibm.wizard.platform.linux.LinuxJVMServiceImpl,

dbg.jvm, waiting to read output from the launcher

(Jan 3, 2011 11:01:15 PM), , com.ibm.wizard.platform.linux.LinuxJVMServiceImpl,

dbg.jvm, got output from launcher. First line = 0

(Jan 3, 2011 11:01:15 PM), , com.ibm.wizard.platform.linux.LinuxJVMServiceImpl,

dbg.jvm, unable to find matching JVM

(Jan 3, 2011 11:01:15 PM), , com.installshield.product.actions.UninstallerJVMRes

olution, dbg.jvm, resolved to JVM file: null with JVM_HOME = null

(Jan 3, 2011 11:01:15 PM), , com.installshield.product.service.product.PureJavaP

roductServiceImpl$Installer, err, ProductException: (error code = 601; message="

JVM not found")