Derby problems

Hi
my Rational Team Concert 2.0.0.2 Server on Linux 64 (with Apache Derby) worked well, but, without any warning, Apache Derby has had some problems. Here the stacktrace from jazz.log:

2010-02-07 00:20:03,115 INFO uration.OverridablePropertyFileServerConfiguration - CRJAZ1363I Loading configuration from "file:///opt/IBM/TeamConcert/server/conf/jazz/teamserver.properties".
2010-02-07 00:20:06,029 INFO .repository.service.internal.rdb.ConnectionFactory - CRJAZ1365I Attempting Initial Database Connection Using
Db Name/Location: repositoryDB
2010-02-07 00:20:07,588 ERROR .repository.service.internal.rdb.ConnectionFactory - CRJAZ0503I Failed to connect to the database: "Failed to start database 'repositoryDB', see the next exception for details."
Db Name/Location: "repositoryDB"
java.sql.SQLException: Failed to start database 'repositoryDB', see the next exception for details.
at org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown Source)
at org.apache.derby.impl.jdbc.Util.newEmbedSQLException(Unknown Source)
at org.apache.derby.impl.jdbc.Util.seeNextException(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedConnection.bootDatabase(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedConnection.<init>(Unknown Source)
at org.apache.derby.jdbc.Driver30.getNewEmbedConnection(Unknown Source)
at org.apache.derby.jdbc.InternalDriver.connect(Unknown Source)
at org.apache.derby.jdbc.EmbeddedDriver.connect(Unknown Source)
at com.ibm.team.repository.service.db.provider.AbstractDbProvider.getConnection(AbstractDbProvider.java:115)
at com.ibm.team.repository.jdbcdriver.internal.derby.DerbyProvider.getConnection(DerbyProvider.java:77)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:79)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:618)
at org.eclipse.soda.sat.core.internal.record.ExportProxyServiceRecord.invoke(ExportProxyServiceRecord.java:370)
at org.eclipse.soda.sat.core.internal.record.ExportProxyServiceRecord.access$0(ExportProxyServiceRecord.java:356)
at org.eclipse.soda.sat.core.internal.record.ExportProxyServiceRecord$ExportedServiceInvocationHandler.invoke(ExportProxyServiceRecord.java:56)
at $Proxy20.getConnection(Unknown Source)
at com.ibm.team.repository.service.internal.rdb.ConnectionFactory.createConnection(ConnectionFactory.java:89)
at com.ibm.team.repository.service.internal.rdb.JDBCConnectionPool.createEntry(JDBCConnectionPool.java:57)
at com.ibm.team.repository.service.internal.rdb.AbstractPool.getEntry(AbstractPool.java:199)
at com.ibm.team.repository.service.internal.rdb.JDBCConnectionPool.getConnection(JDBCConnectionPool.java:93)
at com.ibm.team.repository.service.internal.schemagen.PersistentMappingService.activate(PersistentMappingService.java:85)
at com.ibm.team.repository.service.AbstractService.bindRequiredServices(AbstractService.java:182)
at com.ibm.team.repository.common.transport.internal.registry.AbstractActivationManagerOwner.bindRequiredServices(AbstractActivationManagerOwner.java:236)
at com.ibm.team.repository.common.transport.internal.registry.AbstractActivationManagerOwner.doActivate(AbstractActivationManagerOwner.java:583)
at com.ibm.team.repository.common.transport.internal.registry.AbstractActivationManagerOwner.activate(AbstractActivationManagerOwner.java:166)
at org.eclipse.soda.sat.core.internal.framework.bundle.BundleActivationManager.activate(BundleActivationManager.java:290)
at org.eclipse.soda.sat.core.internal.framework.bundle.BundleActivationManager.performActivation(BundleActivationManager.java:1589)
at org.eclipse.soda.sat.core.internal.framework.bundle.BundleActivationManager.access$2(BundleActivationManager.java:1574)
at org.eclipse.soda.sat.core.internal.framework.bundle.BundleActivationManager$3.acquired(BundleActivationManager.java:573)
at org.eclipse.soda.sat.core.internal.record.container.ImportServiceRecordContainer.serviceAcquired(ImportServiceRecordContainer.java:582)
at org.eclipse.soda.sat.core.internal.record.container.ImportServiceRecordContainer.access$1(ImportServiceRecordContainer.java:566)
at org.eclipse.soda.sat.core.internal.record.container.ImportServiceRecordContainer$5.serviceAcquired(ImportServiceRecordContainer.java:352)
at org.eclipse.soda.sat.core.internal.record.ImportServiceRecord.acquire(ImportServiceRecord.java:116)
at org.eclipse.soda.sat.core.internal.record.container.ImportServiceRecordContainer$1.execute(ImportServiceRecordContainer.java:64)
at org.eclipse.soda.sat.core.internal.record.container.ServiceRecordContainer.doForService(ServiceRecordContainer.java:363)
at org.eclipse.soda.sat.core.internal.record.container.ServiceRecordContainer.doForEach(ServiceRecordContainer.java:330)
at org.eclipse.soda.sat.core.internal.record.container.ImportServiceRecordContainer.acquire(ImportServiceRecordContainer.java:303)
at org.eclipse.soda.sat.core.internal.framework.bundle.BundleActivationManager.acquireImportedServices(BundleActivationManager.java:234)
at org.eclipse.soda.sat.core.internal.framework.bundle.BundleActivationManager.acquireImportServiceRecords(BundleActivationManager.java:250)
at org.eclipse.soda.sat.core.internal.framework.bundle.BundleActivationManager.startSync(BundleActivationManager.java:2054)
at org.eclipse.soda.sat.core.internal.framework.bundle.BundleActivationManager.start(BundleActivationManager.java:2023)
at com.ibm.team.repository.common.transport.internal.registry.OsgiServicesManager.register(OsgiServicesManager.java:404)
at com.ibm.team.repository.common.transport.services.TeamServiceRegistry.registerServices(TeamServiceRegistry.java:325)
at com.ibm.team.repository.common.transport.services.TeamServiceRegistry.initialize(TeamServiceRegistry.java:286)
at com.ibm.team.repository.common.transport.services.TeamServiceRegistry.start(TeamServiceRegistry.java:367)
at com.ibm.team.repository.servlet.AbstractTeamServerServlet.init(AbstractTeamServerServlet.java:1200)
at com.ibm.team.repository.servlet.TeamServerServlet.init(TeamServerServlet.java:192)
at javax.servlet.GenericServlet.init(GenericServlet.java:212)
at org.eclipse.equinox.http.registry.internal.ServletManager$ServletWrapper.initializeDelegate(ServletManager.java:195)
at org.eclipse.equinox.http.registry.internal.ServletManager$ServletWrapper.service(ServletManager.java:179)
at org.eclipse.equinox.http.servlet.internal.ServletRegistration.handleRequest(ServletRegistration.java:90)
at org.eclipse.equinox.http.servlet.internal.ProxyServlet.processAlias(ProxyServlet.java:111)
at org.eclipse.equinox.http.servlet.internal.ProxyServlet.service(ProxyServlet.java:75)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.eclipse.equinox.servletbridge.BridgeServlet.service(BridgeServlet.java:121)
at com.ibm.team.repository.server.servletbridge.JazzServlet.service(JazzServlet.java:54)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:210)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:525)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:870)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:685)
at java.lang.Thread.run(Thread.java:811)
Caused by:
java.sql.SQLException: Invalid checksum on Page Page(2,Container(0, 6768)), expected=1,327,448,919, on-disk version=3,467,064,184, page dump follows: Hex dump:
00000000: 0075 0000 0001 0000 0000 0000 1ecd 0016 .u...........ￍ..

etc.

Where are the problems in your opinion?

thanks

Daniele