Grid Control installation failed at omsca
I am installing Grid Control 11G, it failed at omsca with the following message
<span calibri="" style="font-size: 8pt;line-height: 115%;font-family: ">Mar 21, 2011 2:07:11 PM oracle.sysman.omsca.util.CoreOMSConfigAssistantUtil execCommand
</span>
<span calibri="" style="font-size: 8pt;line-height: 115%;font-family: ">INFO: error messages of the command :
</span>
<span calibri="" style="font-size: 8pt;line-height: 115%;font-family: ">Exception in thread "Main Thread" java.lang.NoClassDefFoundError: weblogic/descriptor/DescriptorClassLoader
</span>
<span calibri="" style="font-size: 8pt;line-height: 115%;font-family: "><span style="mso-spacerun: yes;"> </span>at weblogic.WLST.main(WLST.java:19)
</span>
Any idea what may be the problem?