HulkDataSource HulkDataSource (testdb) has been closed

TongWeb7.0调用数据源报错如下， 请问如何解决？

[testdb - Shutdown initiated...]
[testdb - Close initiated...]
[testdb - Closed.]
[Deleting Resource<id=testdb>]
[testdb - Starting...]
[testdb - Start completed.]
[Creating Resource<id=testdb>]
[java.sql.SQLException: HulkDataSource HulkDataSource (testdb) has been closed.]
[    at com.tongweb.hulk.HulkDataSource.getConnection(HulkDataSource.java:62)]
[    at com.tongweb.tongejb.resource.jdbc.DecoratorDS.getConnection(DecoratorDS.java:26)]
[    at com.tongweb.tongejb.resource.jdbc.managed.local.ManagedConnection.newConnection(ManagedConnection.java:205)]