was 报内存溢出错误。怎么解决？

was刚启动就发现系统报内存溢出错误，无法正常使用。错误信息如下：

[11-10-27 8:13:31:795 GMT+08:00] 000000e3 SystemErr     R Exception in thread "[SSL: ServerSocket[addr=0.0.0.0/0.0.0.0,port=0,localport=8880]]" java.lang.OutOfMemoryError
[11-10-27 8:13:31:795 GMT+08:00] 000000e3 SystemErr     R  at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:457)
[11-10-27 8:13:31:795 GMT+08:00] 000000e3 SystemErr     R  at java.net.ServerSocket.implAccept(ServerSocket.java:473)
[11-10-27 8:13:31:795 GMT+08:00] 000000e3 SystemErr     R  at com.ibm.jsse2.hc.accept(hc.java:47)
[11-10-27 8:13:31:795 GMT+08:00] 000000e3 SystemErr     R  at com.ibm.ws.http.HttpTransport.run(HttpTransport.java:456)
[11-10-27 8:13:31:795 GMT+08:00] 000000e3 SystemErr     R  at java.lang.Thread.run(Thread.java:811)
[11-10-27 8:13:33:304 GMT+08:00] 000000e4 SystemErr     R Exception in thread "Thread-62" java.lang.OutOfMemoryError
[11-10-27 8:13:33:305 GMT+08:00] 000000e4 SystemErr     R  at java.lang.String.<init>(String.java:346)
[11-10-27 8:13:33:305 GMT+08:00] 000000e4 SystemErr     R  at com.ibm.tivoli.itcam.toolkit.ai.gccollector.BufferedFileReader.ready(BufferedFileReader.java:249)
[11-10-27 8:13:33:305 GMT+08:00] 000000e4 SystemErr     R  at com.ibm.tivoli.itcam.toolkit.ai.gccollector.GCEventParser.getEvent(GCEventParser.java:143)
[11-10-27 8:13:33:305 GMT+08:00] 000000e4 SystemErr     R  at com.ibm.tivoli.itcam.toolkit.ai.gccollector.GCEventParser.parse(GCEventParser.java:157)
[11-10-27 8:13:33:305 GMT+08:00] 000000e4 SystemErr     R  at com.ibm.tivoli.itcam.toolkit.ai.gccollector.GCLogChecker.parseLog(GCLogChecker.java:146)
[11-10-27 8:13:33:305 GMT+08:00] 000000e4 SystemErr     R  at com.ibm.tivoli.itcam.toolkit.ai.gccollector.GCLogChecker.runForFixedInterval(GCLogChecker.java:223)
[11-10-27 8:13:33:305 GMT+08:00] 000000e4 SystemErr     R  at com.ibm.tivoli.itcam.toolkit.ai.gccollector.GCLogChecker.run(GCLogChecker.java:208)
[11-10-27 8:13:33:305 GMT+08:00] 000000e4 SystemErr     R  at java.lang.Thread.run(Thread.java:811)
[11-10-27 8:13:33:307 GMT+08:00] 000000e5 SystemErr     R Exception in thread "LT=0:P=802781:O=0:port=9100" java.lang.OutOfMemoryError
[11-10-27 8:13:33:308 GMT+08:00] 000000e5 SystemErr     R java.lang.OutOfMemoryError
[11-10-27 8:13:33:308 GMT+08:00] 000000e6 SystemErr     R Exception in thread "LT=2:P=802781:O=0:port=9402"  at com.ibm.oti.vm.VM.findClassOrNull(Native Method)
[11-10-27 8:13:33:309 GMT+08:00] 000000e5 SystemErr     R  at java.net.PlainSocketImpl.socketAccept(Native Method)
[11-10-27 8:13:33:309 GMT+08:00] 000000e6 SystemErr     R java.lang.OutOfMemoryError
[11-10-27 8:13:33:309 GMT+08:00] 000000e5 SystemErr     R  at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:457)
[11-10-27 8:13:33:309 GMT+08:00] 000000e6 SystemErr     R  at java.net.PlainSocketImpl.socketAccept(Native Method)
[11-10-27 8:13:33:309 GMT+08:00] 000000e5 SystemErr     R  at java.net.ServerSocket.implAccept(ServerSocket.java:473)
[11-10-27 8:13:33:309 GMT+08:00] 000000e5 SystemErr     R  at java.net.ServerSocket.accept(ServerSocket.java:444)
[11-10-27 8:13:33:309 GMT+08:00] 000000e5 SystemErr     R  at com.ibm.rmi.transport.ListenerThread.run(ListenerThread.java:170)
[11-10-27 8:13:33:310 GMT+08:00] 000000e6 SystemErr     R  at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:457)
[11-10-27 8:13:33:310 GMT+08:00] 00000018 SystemErr     R  at com.ibm.oti.vm.BootstrapClassLoader.loadClass(BootstrapClassLoader.java:67)
[11-10-27 8:13:33:311 GMT+08:00] 000000e6 SystemErr     R  at java.net.ServerSocket.implAccept(ServerSocket.java:473)
[11-10-27 8:13:33:311 GMT+08:00] 000000e7 SystemErr     R Exception in thread "PSB-Thread-Main"  at java.lang.management.ManagementFactory.getThreadMXBean(ManagementFactory.java:328)
[11-10-27 8:13:33:312 GMT+08:00] 000000e6 SystemErr     R  at com.ibm.jsse2.hc.accept(hc.java:47)
[11-10-27 8:13:33:312 GMT+08:00] 00000018 SystemErr     R  at com.ibm.ws.runtime.component.ThreadMonitorImpl$RasListener.threadIsHung(ThreadMonitorImpl.java:486)
[11-10-27 8:13:33:312 GMT+08:00] 000000e6 SystemErr     R  at com.ibm.rmi.transport.ListenerThread.run(ListenerThread.java:170)
[11-10-27 8:13:33:312 GMT+08:00] 00000018 SystemErr     R  at com.ibm.ws.runtime.component.ThreadMonitorImpl.threadIsHung(ThreadMonitorImpl.java:655)
[11-10-27 8:13:33:313 GMT+08:00] 000000e8 SystemErr     R Exception in thread "PSB-Thread-Main"  at com.ibm.ws.runtime.component.ThreadPoolMgrImpl$ThreadPoolMonitorAdapter.checkThread(ThreadPoolMgrImpl.java:765)
[11-10-27 8:13:33:313 GMT+08:00] 00000018 SystemErr     R  at com.ibm.ws.util.ThreadPool.checkAllThreads(ThreadPool.java:1337)
[11-10-27 8:13:33:313 GMT+08:00] 000000e8 SystemErr     R java.lang.OutOfMemoryError