Problem of shutdown in CentOs or Fedora Linux

[Arvind Subramanian]

A wierd problem occur while shutdowning the tomcat 6 in the Fedora and Centos. Usually i use shell file to shutdown. After shutting down when see the postgre preocess by

ps -ef | grep java

it is still showing the process as running.

such as

  tomcat   14694     1 72 Apr23 ?        23:44:25 /usr/java/jdk1.5.0_13/jre/bin/java -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.util.logging.config.file=/usr/share/tomcat6/apache-tomcat-6.0.18/conf/logging.properties -verbose:gc -Xloggc:gc.log -XX:+PrintGCDetails -XX:MaxPermSize=512M -Xms1024M -Xmx1024M -Djava.awt.headless=true -Djava.endorsed.dirs=/usr/share/tomcat6/apache-tomcat-6.0.18/endorsed -classpath :/usr/share/tomcat6/apache-tomcat-6.0.18/bin/bootstrap.jar -Dcatalina.base=/usr/share/tomcat6/apache-tomcat-6.0.18 -Dcatalina.home=/usr/share/tomcat6/apache-tomcat-6.0.18 -Djava.io.tmpdir=/usr/share/tomcat6/apache-tomcat-6.0.18/temp org.apache.catalina.startup.Bootstrap start  

So if i keep repeating the start and shutdown after few cycles it is completely refusing to start. What might be the source or reason of this problem?