虚拟机中weblogic因内存空间不够无法启动

-bash-3.00$ ./startWebLogic.sh
.
.
JAVA Memory arguments: -Xms512m -Xmx512m
.
WLS Start Mode=Production
.
CLASSPATH=/home/weblogic/patch_wls1033/profiles/default/sys_manifest_classpath/weblogic_patch.jar:/home/weblogic/patch_oepe1033/profiles/default/sys_manifest_classpath/weblogic_patch.jar:/home/weblogic/patch_ocp353/profiles/default/sys_manifest_classpath/weblogic_patch.jar:/home/weblogic/jrockit_160_17_R28.0.0-679/lib/tools.jar:/home/weblogic/wlserver_10.3/server/lib/weblogic_sp.jar:/home/weblogic/wlserver_10.3/server/lib/weblogic.jar:/home/weblogic/modules/features/weblogic.server.modules_10.3.3.0.jar:/home/weblogic/wlserver_10.3/server/lib/webservices.jar:/home/weblogic/modules/org.apache.ant_1.7.1/lib/ant-all.jar:/home/weblogic/modules/net.sf.antcontrib_1.1.0.0_1-0b2/lib/ant-contrib.jar:/home/weblogic/wlserver_10.3/common/derby/lib/derbyclient.jar:/home/weblogic/wlserver_10.3/server/lib/xqrl.jar:.:/u01/java/jdk1.5.0_22/jre/lib/rt.jar:/u01/java/jdk1.5.0_22/lib/dt.jar:/u01/java/jdk1.5.0_22/lib/tools.jar
.
PATH=/home/weblogic/wlserver_10.3/server/bin:/home/weblogic/modules/org.apache.ant_1.7.1/bin:/home/weblogic/jrockit_160_17_R28.0.0-679/jre/bin:/home/weblogic/jrockit_160_17_R28.0.0-679/bin:/usr/kerberos/bin:/usr/local/bin:/bin:/usr/bin:/usr/X11R6/bin:/u01/java/jdk1.5.0_22/bin
.
***************************************************
*  To start WebLogic Server, use a username and   *
*  password assigned to an admin-level user.  For *
*  server administration, use the WebLogic Server *
*  console at http://hostname:port/console        *
***************************************************
starting weblogic with Java version:
java version "1.6.0_17"
Java(TM) SE Runtime Environment (build 1.6.0_17-b04)
Oracle JRockit(R) (build R28.0.0-679-130297-1.6.0_17-20100312-2128-linux-ia32, compiled mode)
Starting WLS with line:
/home/weblogic/jrockit_160_17_R28.0.0-679/bin/java -jrockit   -Xms512m -Xmx512m -Dweblogic.Name=AdminServer -Djava.security.policy=/home/weblogic/wlserver_10.3/server/lib/weblogic.policy  -Dweblogic.ProductionModeEnabled=true   -da -Dplatform.home=/home/weblogic/wlserver_10.3 -Dwls.home=/home/weblogic/wlserver_10.3/server -Dweblogic.home=/home/weblogic/wlserver_10.3/server   -Dweblogic.management.discover=true  -Dwlw.iterativeDev=false -Dwlw.testConsole=false -Dwlw.logErrorsToConsole=false -Dweblogic.ext.dirs=/home/weblogic/patch_wls1033/profiles/default/sysext_manifest_classpath:/home/weblogic/patch_oepe1033/profiles/default/sysext_manifest_classpath:/home/weblogic/patch_ocp353/profiles/default/sysext_manifest_classpath  weblogic.Server
<Apr 4, 2011 11:40:43 PM CST> <Info> <WebLogicServer> <BEA-000377> <Starting WebLogic Server with Oracle JRockit(R) Version R28.0.0-679-130297-1.6.0_17-20100312-2128-linux-ia32 from Oracle Corporation>
<Apr 4, 2011 11:40:47 PM CST> <Info> <Management> <BEA-141107> <Version: WebLogic Server 10.3.3.0  Fri Apr 9 00:05:28 PDT 2010 1321401 >
<Apr 4, 2011 11:40:51 PM CST> <Info> <Security> <BEA-090065> <Getting boot identity from user.>
Enter username to boot WebLogic server:weblogic
Enter password to boot WebLogic server:
<Apr 4, 2011 11:41:40 PM CST> <Notice> <WebLogicServer> <BEA-000365> <Server state changed to STARTING>
<Apr 4, 2011 11:41:40 PM CST> <Info> <WorkManager> <BEA-002900> <Initializing self-tuning thread pool>

Weblogic启动到此处后，再也没有任何反应，不知道怎么回事，就是启动不起来啦！
在网上搜索了一通，也没有结果，后来仔细想了下， 可能是虚拟机内存不够大，导致不能正常启动，重新设置了下虚拟机内存空间的大小，可以正常启动了！