ibm heapAnalyzer 启动 使用问题

websphere 无故停止，产生很多heapdump,javacore,snap文件
准备用ibm heapAnalyzer进行分析，下载之后却不能启动，
java –Xmx1000m –jar ha146.jar 这种方式该如何启动。
在本机双击却能打开heapAnalyzer界面，打开 heapdump文件却报错

Exception in thread "AWT-EventQueue-0" Exception in thread "Thread-4" java.lang.OutOfMemoryError: Java heap space
at java.awt.image.DataBufferInt.(Unknown Source)
at java.awt.image.Raster.createPackedRaster(Unknown Source)
at java.awt.image.DirectColorModel.createCompatibleWritableRaster(Unknown Source)
at sun.awt.image.SunVolatileImage.getBackupImage(Unknown Source)
at sun.awt.image.VolatileSurfaceManager.getBackupSurface(Unknown Source)
at sun.awt.image.VolatileSurfaceManager.initialize(Unknown Source)
at sun.awt.image.SunVolatileImage.(Unknown Source)
at sun.awt.image.SunVolatileImage.(Unknown Source)
at java.awt.GraphicsConfiguration.createCompatibleVolatileImage(Unknown Source)
at java.awt.GraphicsConfiguration.createCompatibleVolatileImage(Unknown Source)
at com.sun.java.swing.plaf.nimbus.AbstractRegionPainter.getImage(Unknown Source)
at com.sun.java.swing.plaf.nimbus.AbstractRegionPainter.paintWithFixedSizeCaching(Unknown Source)
at com.sun.java.swing.plaf.nimbus.AbstractRegionPainter.paint(Unknown Source)
at com.sun.java.swing.plaf.nimbus.AbstractRegionPainter.paint(Unknown Source)
at com.sun.java.swing.plaf.nimbus.SynthPainterImpl.paint(Unknown Source)
at com.sun.java.swing.plaf.nimbus.SynthPainterImpl.paintBackground(Unknown Source)
at com.sun.java.swing.plaf.nimbus.SynthPainterImpl.paintBackground(Unknown Source)
at com.sun.java.swing.plaf.nimbus.SynthPainterImpl.paintProgressBarBackground(Unknown Source)
at javax.swing.plaf.synth.SynthProgressBarUI.update(Unknown Source)
at javax.swing.JComponent.paintComponent(Unknown Source)
at javax.swing.JComponent.paint(Unknown Source)
at javax.swing.JComponent.paintChildren(Unknown Source)
at javax.swing.JComponent.paint(Unknown Source)
at javax.swing.JComponent.paintToOffscreen(Unknown Source)
at javax.swing.BufferStrategyPaintManager.paint(Unknown Source)
at javax.swing.RepaintManager.paint(Unknown Source)
at javax.swing.JComponent._paintImmediately(Unknown Source)
at javax.swing.JComponent.paintImmediately(Unknown Source)
at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
at javax.swing.RepaintManager.seqPaintDirtyRegions(Unknown Source)
at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(Unknown Source)
java.lang.OutOfMemoryError: Java heap space
at java.lang.StringBuilder.toString(Unknown Source)
at com.ibm.jinwoo.heap.PHDTask$ActualTask.processHeapDump(PHDTask.java:1113)
at com.ibm.jinwoo.heap.PHDTask$ActualTask.(PHDTask.java:1923)
at com.ibm.jinwoo.heap.PHDTask$1.construct(PHDTask.java:2034)
at com.ibm.jinwoo.heap.ThreadHandler$1.run(ThreadHandler.java:25)
at java.lang.Thread.run(Unknown Source)
这是为什么，网上查可能是内存没设够，可是heapAnalyzer没有设的地方，我的机器内存够大有3G，heapdump文件只有几十mb.收起