I have executed jboss's database manager by jxm-console and manipulated Hypersonic database.
But after installation of liferay on jboss-3.2.6 and Tomcat-5.0.28, it doesn't work.

When I invoked startDatabaseManager operation, error occured.
Anyone know how to fix this problem?


18:13:26,014 ERROR [HypersonicDatabase] Failed to start database manager
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.jboss.jdbc.HypersonicDatabase$1.run(HypersonicDatabase.java:565)
Caused by: java.awt.HeadlessException
at java.applet.Applet.(Applet.java:44)
at javax.swing.JApplet.(JApplet.java:97)
at org.hsqldb.util.DatabaseManagerSwing.(Unknown Source)
at org.hsqldb.util.DatabaseManagerSwing.main(Unknown Source)
... 5 more