我需要一些信息：

我有 2 台带有 TOMCAT 7.0.28 和 JAVA 的 redhat 6.1 Linux 服务器jdk1.7.0_05

在192.168.1.20(TOM04)上，我有一个实例TOMCAT 7，带有MBEAN“Java . lang:type = memory pool，name=Perm Gen”

在 192.168.1.21（TOM01） 上，我有 1 个实例 TOMCAT 7，带有 MBEAN “java.lang：type=MemoryPool，name=PS Perm Gen”

为什么MBEAN与“PERM GEN”不同

http://img27.imageshack.us/img27/5803/tom01u.png

http://img839.imageshack.us/img839/7539/tom04.png

Java 版本相同：java 版本 java 版本 “1.7.0_05” Java（TM） SE 运行时环境（build 1.7.0_05-b06）

setnenv.sh192.168.1.20（TOM04）：

LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$CATALINA_HOME/lib导出LD_LIBLARY_PAT

导出JAVA_HOME=/usr/java/default

JAVA _ OPTS = " $ JAVA _ OPTS-xmx 1024m-xms 512m-xmn 384m-server-XX:MaxPermSize = 384m " JAVA _ OPTS = " $ JAVA _ OPTS-DLOG _ ROOT _ PATH =/opt/applogs/instance 01 " JAVA _ OPTS = " $ JAVA _ OPTS-DCOM . ogig . environment = PRODUCTION " JAVA _ OPTS = " $ JAVA _ OPTS-XX:heapdumponotofmemorerror " JAVA _ OPTS = " $ JAVA _ OPTS-XX:HeapDumpPath

导出 JAVA_OPTS=$JAVA_OPTS

setenv.sh192.168.1.21（TOM01）：

LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$CATALINA_HOME/lib导出LD_LIBLARY_PAT

导出JAVA_HOME=/usr/java/default

JAVA _ OPTS = " $ JAVA _ OPTS-xmx 1024m-xms 512m-xmn 384m-server-XX:MaxPermSize = 384m " JAVA _ OPTS = " $ JAVA _ OPTS-DLOG _根_路径=/opt/applogs/instance 01 " JAVA _ OPTS = " $ JAVA _ OPTS-Dcom。ogige . environment = PRODUCTION " JAVA _ OPTS = " $ JAVA _ OPTS-XX:heapdumponotofmemoryerror " JAVA _ OPTS = " $ JAVA _ OPTS-XX:HeapDumpPath =/opt/applogs " JAVA _ OPTS = " $ JAVA _ OPTS-XX:ParallelGCThreads = 2 " JAVA _ OPTS = " $ JAVA _ OPTS-XX:survivor ratio = 8 "

导出 JAVA_OPTS=$JAVA_OPTS