解决tomcat内存溢出问题
在catalina.bat第一行设置
set JAVA_OPTS=-Xms256m -Xmx512m -XX:MaxPermSize=256m

如果是myeclipse启动,则在配置java的DefaultVM Arguments中配置：
-Xms128M -Xmx512M -XX:PermSize=64M -XX:MaxPermSize=128M

在catalina.sh中
# ----- Execute The Requested Command -----------------------------------------

# Bugzilla 37848: only output this if we have a TTY
if [ $have_tty -eq 1 ]; then
JAVA_OPTS="$JAVA_OPTS -server -Xms128M -Xmx512M -XX:PermSize=64M -XX:MaxPermSize=128M" echo "Using CATALINA_BASE: $CATALINA_BASE"
echo "Using CATALINA_HOME: $CATALINA_HOME"
echo "Using CATALINA_TMPDIR: $CATALINA_TMPDIR"
if [ "$1" = "debug" ] ; then
echo "Using JAVA_HOME: $JAVA_HOME"
else
echo "Using JRE_HOME: $JRE_HOME"
fi
echo "Using CLASSPATH: $CLASSPATH"
if [ ! -z "$CATALINA_PID" ]; then
echo "Using CATALINA_PID: $CATALINA_PID"
fi
fi