tomcat logs

31-Oct-2014 03:35:17 org.apache.coyote.http11.Http11Processor process
SEVERE: Error finishing response
java.lang.OutOfMemoryError: Java heap space
	at sun.util.resources.TimeZoneNames.getContents(TimeZoneNames.java:203)
	at sun.util.resources.OpenListResourceBundle.loadLookup(OpenListResourceBundle.java:125)
	at sun.util.resources.OpenListResourceBundle.loadLookupTablesIfNecessary(OpenListResourceBundle.java:113)
	at sun.util.resources.OpenListResourceBundle.handleGetObject(OpenListResourceBundle.java:74)
	at sun.util.resources.TimeZoneNamesBundle.handleGetObject(TimeZoneNamesBundle.java:75)
	at java.util.ResourceBundle.getObject(ResourceBundle.java:398)
	at java.util.ResourceBundle.getObject(ResourceBundle.java:401)
	at java.util.ResourceBundle.getStringArray(ResourceBundle.java:381)
	at sun.util.TimeZoneNameUtility.retrieveDisplayNames(TimeZoneNameUtility.java:118)
	at sun.util.TimeZoneNameUtility.retrieveDisplayNames(TimeZoneNameUtility.java:99)
	at java.util.TimeZone.getDisplayNames(TimeZone.java:423)
	at java.util.TimeZone.getDisplayName(TimeZone.java:374)
	at java.text.SimpleDateFormat.subFormat(SimpleDateFormat.java:1110)
	at java.text.SimpleDateFormat.format(SimpleDateFormat.java:899)
	at java.text.SimpleDateFormat.format(SimpleDateFormat.java:869)
	at java.text.DateFormat.format(DateFormat.java:333)
	at org.apache.tomcat.util.http.FastHttpDateFormat.getCurrentDate(FastHttpDateFormat.java:115)
	at org.apache.coyote.http11.Http11Processor.prepareResponse(Http11Processor.java:1604)
	at org.apache.coyote.http11.Http11Processor.action(Http11Processor.java:956)
	at org.apache.coyote.Response.action(Response.java:181)
	at org.apache.coyote.http11.InternalOutputBuffer.endRequest(InternalOutputBuffer.java:398)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:901)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
	at java.lang.Thread.run(Thread.java:701)
31-Oct-2014 03:35:18 org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor processChildren
SEVERE: Exception invoking periodic operation:
java.lang.OutOfMemoryError: Java heap space
	at java.lang.reflect.Array.newInstance(Array.java:70)
	at java.util.AbstractCollection.toArray(AbstractCollection.java:176)
	at org.apache.catalina.startup.HostConfig.checkResources(HostConfig.java:1263)
	at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1382)
	at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:306)
	at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:142)
	at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1389)
	at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1653)
	at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1662)
	at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1642)
	at java.lang.Thread.run(Thread.java:701)