这个异常错误是怎么回事？怎么解决？谢谢各位！
用得是jboss-4.0.5和oracle10g，系统一直运行正常，今天在加了一些功能模块后突然这样了
17:41:39,051 WARN [TxConnectionManager] Connection error occured: org.jboss.resource.connectionmanager.TxConnectionManager$TxConnectionEventListener@132820a[state=NORMAL mc=org.jboss.resource.adapter.jdbc.local.LocalManagedConnection@1607bee handles=0 lastUse=1237801116111 permit=false trackByTx=false mcp=org.jboss.resource.connectionmanager.JBossManagedConnectionPool$OnePool@12bf560 context=org.jboss.resource.connectionmanager.InternalManagedConnectionPool@fa930d xaResource=org.jboss.resource.connectionmanager.TxConnectionManager$LocalXAResource@1685138 txSync=null]
java.sql.SQLException: pingDatabase failed status=-1
at org.jboss.resource.adapter.jdbc.vendor.OracleValidConnectionChecker.isValidConnection(OracleValidConnectionChecker.java:72)
at org.jboss.resource.adapter.jdbc.BaseWrapperManagedConnectionFactory.isValidConnection(BaseWrapperManagedConnectionFactory.java:435)
at org.jboss.resource.adapter.jdbc.BaseWrapperManagedConnection.checkValid(BaseWrapperManagedConnection.java:231)
at org.jboss.resource.adapter.jdbc.local.LocalManagedConnectionFactory.matchManagedConnections(LocalManagedConnectionFactory.java:200)
at org.jboss.resource.connectionmanager.InternalManagedConnectionPool.getConnection(InternalManagedConnectionPool.java:209)
at org.jboss.resource.connectionmanager.JBossManagedConnectionPool$BasePool.getConnection(JBossManagedConnectionPool.java:491)
at org.jboss.resource.connectionmanager.BaseConnectionManager2.getManagedConnection(BaseConnectionManager2.java:341)
at org.jboss.resource.connectionmanager.TxConnectionManager.getManagedConnection(TxConnectionManager.java:301)
at org.jboss.resource.connectionmanager.BaseConnectionManager2.allocateConnection(BaseConnectionManager2.java:396)
at org.jboss.resource.connectionmanager.BaseConnectionManager2$ConnectionManagerProxy.allocateConnection(BaseConnectionManager2.java:842)
at org.jboss.resource.adapter.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:88)
17:41:39,052 WARN [JBossManagedConnectionPool] Destroying connection that could not be successfully matched: org.jboss.resource.connectionmanager.TxConnectionManager$TxConnectionEventListener@132820a[state=DESTROYED mc=org.jboss.resource.adapter.jdbc.local.LocalManagedConnection@1607bee handles=0 lastUse=1237801116111 permit=false trackByTx=false mcp=org.jboss.resource.connectionmanager.JBossManagedConnectionPool$OnePool@12bf560 context=org.jboss.resource.connectionmanager.InternalManagedConnectionPool@fa930d xaResource=org.jboss.resource.connectionmanager.TxConnectionManager$LocalXAResource@1685138 txSync=null]
17:41:42,371 ERROR [STDERR] java.sql.SQLException: ORA-00600: internal error code, arguments: [kdsgrp1], [], [], [], [], [], [], []
17:41:42,371 ERROR [STDERR] at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)
17:41:42,372 ERROR [STDERR] at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:331)