tomcat 启动报错问题

以下是tomcat启动时报错信息：

2009-11-25 18:49:33 org.apache.naming.NamingContext lookup
警告: Unexpected exception resolving reference
java.io.IOException: IOException writing to /opt/jakarta-tomcat-5.0.28/conf/tomcat-users.xml.new
        at org.apache.catalina.users.MemoryUserDatabase.save(MemoryUserDatabase.java:495)
        at org.apache.catalina.users.MemoryUserDatabaseFactory.getObjectInstance(MemoryUserDatabaseFactory.java:98)
        at org.apache.naming.factory.ResourceFactory.getObjectInstance(ResourceFactory.java:129)
        at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:301)
        at org.apache.naming.NamingContext.lookup(NamingContext.java:791)
        at org.apache.naming.NamingContext.lookup(NamingContext.java:151)
        at org.apache.catalina.mbeans.GlobalResourcesLifecycleListener.createMBeans(GlobalResourcesLifecycleListener.java:155)
        at org.apache.catalina.mbeans.GlobalResourcesLifecycleListener.createMBeans(GlobalResourcesLifecycleListener.java:125)
        at org.apache.catalina.mbeans.GlobalResourcesLifecycleListener.lifecycleEvent(GlobalResourcesLifecycleListener.java:97)
        at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
        at org.apache.catalina.core.StandardServer.start(StandardServer.java:2306)
        at org.apache.catalina.startup.Catalina.start(Catalina.java:556)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:324)
        at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:287)
        at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:425)
2009-11-25 18:49:33 org.apache.catalina.mbeans.GlobalResourcesLifecycleListener createMBeans
严重: Exception processing Global JNDI Resources
javax.naming.NamingException: IOException writing to /opt/jakarta-tomcat-5.0.28/conf/tomcat-users.xml.new
        at org.apache.naming.NamingContext.lookup(NamingContext.java:803)
        at org.apache.naming.NamingContext.lookup(NamingContext.java:151)
        at org.apache.catalina.mbeans.GlobalResourcesLifecycleListener.createMBeans(GlobalResourcesLifecycleListener.java:155)
        at org.apache.catalina.mbeans.GlobalResourcesLifecycleListener.createMBeans(GlobalResourcesLifecycleListener.java:125)
        at org.apache.catalina.mbeans.GlobalResourcesLifecycleListener.lifecycleEvent(GlobalResourcesLifecycleListener.java:97)
        at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
        at org.apache.catalina.core.StandardServer.start(StandardServer.java:2306)
        at org.apache.catalina.startup.Catalina.start(Catalina.java:556)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:324)
        at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:287)
        at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:425)
2009-11-25 18:49:33 org.apache.catalina.core.StandardService start
信息: Starting service Catalina
2009-11-25 18:49:33 org.apache.catalina.core.StandardEngine start
信息: Starting Servlet Engine: Apache Tomcat/5.0.28
2009-11-25 18:49:33 org.apache.naming.NamingContext lookup
警告: Unexpected exception resolving reference
java.io.IOException: IOException writing to /opt/jakarta-tomcat-5.0.28/conf/tomcat-users.xml.new
        at org.apache.catalina.users.MemoryUserDatabase.save(MemoryUserDatabase.java:495)
        at org.apache.catalina.users.MemoryUserDatabaseFactory.getObjectInstance(MemoryUserDatabaseFactory.java:98)
        at org.apache.naming.factory.ResourceFactory.getObjectInstance(ResourceFactory.java:129)
        at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:301)
        at org.apache.naming.NamingContext.lookup(NamingContext.java:791)
        at org.apache.naming.NamingContext.lookup(NamingContext.java:151)
        at org.apache.catalina.realm.UserDatabaseRealm.start(UserDatabaseRealm.java:252)
        at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1075)
        at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:478)
        at org.apache.catalina.core.StandardService.start(StandardService.java:480)
        at org.apache.catalina.core.StandardServer.start(StandardServer.java:2313)
        at org.apache.catalina.startup.Catalina.start(Catalina.java:556)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:324)
        at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:287)
        at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:425)
javax.naming.NamingException: IOException writing to /opt/jakarta-tomcat-5.0.28/conf/tomcat-users.xml.new
        at org.apache.naming.NamingContext.lookup(NamingContext.java:803)
        at org.apache.naming.NamingContext.lookup(NamingContext.java:151)
        at org.apache.catalina.realm.UserDatabaseRealm.start(UserDatabaseRealm.java:252)
        at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1075)
        at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:478)
        at org.apache.catalina.core.StandardService.start(StandardService.java:480)
        at org.apache.catalina.core.StandardServer.start(StandardServer.java:2313)
        at org.apache.catalina.startup.Catalina.start(Catalina.java:556)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:324)
        at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:287)
        at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:425)
2009-11-25 18:49:33 org.apache.catalina.startup.Catalina start
严重: Catalina.start:
LifecycleException:  No UserDatabase component found under key UserDatabase
        at org.apache.catalina.realm.UserDatabaseRealm.start(UserDatabaseRealm.java:259)
        at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1075)
        at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:478)
        at org.apache.catalina.core.StandardService.start(StandardService.java:480)
        at org.apache.catalina.core.StandardServer.start(StandardServer.java:2313)
        at org.apache.catalina.startup.Catalina.start(Catalina.java:556)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:324)
        at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:287)
        at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:425)
2009-11-25 18:49:33 org.apache.catalina.startup.Catalina start


报错的原因是磁盘空间已满：
用命令查看如下：




可见/目录已经满了
然后查看你那个目录占用空间异常
用命令 du -m  --max-depth=1 （-m表示用M（兆）显示，--max-depth=1表示当前一级目录下）
也可以用下面这个命令，du $1 --max-depth=1 | sort -n|awk '$2!="." {totalsizedir=totalsizedir+$1;printf "%14.3fM %14.3fK %s\n",$1/1024,$1,$2} END{printf "--------------Total: %fM---------------\n",totalsizedir/1024 }'|sed 's:/.*/\([^/]\{1,\}\)$:\1:g'

不过还是觉得上面的好用，又简单


然后一级级往下看，就知道那个文件夹占用的空间最多
由于我的tomcat在opt下面所以往下看：


就知道logs下内容不正常，太多了，删除一些就可以了
清空文件dbsync.log