javax.persistence.PersistenceException : Transaction failed to flush

Question

我遇到了 JPA 异常

"javax.persistence.PersistenceException: Transaction failed to flush"

然后我从系统中删除了本地数据存储(datastore-indexes-auto.xml 和 local_db.bin)。再次重新创建所有数据，之后异常消失了。我想知道刚刚发生了什么？

以下是堆栈跟踪

[RPC Fault faultString="org.springframework.orm.jpa.JpaSystemException : Transaction failed to flush; nested exception is javax.persistence.PersistenceException: Transaction failed to flush" faultCode="Server.Processing" faultDetail="null"]
at mx.rpc::AbstractInvoker/http://www.adobe.com/2006/flex/mx/internal::faultHandler()[C:\autobuild\3.5.0\frameworks\projects\rpc\src\mx\rpc\AbstractInvoker.as:290]
at mx.rpc::Responder/fault()[C:\autobuild\3.5.0\frameworks\projects\rpc\src\mx\rpc\Responder.as:58]
at mx.rpc::AsyncRequest/fault()[C:\autobuild\3.5.0\frameworks\projects\rpc\src\mx\rpc\AsyncRequest.as:103]
at NetConnectionMessageResponder/statusHandler()[C:\autobuild\3.5.0\frameworks\projects\rpc\src\mx\messaging\channels\NetConnectionChannel.as:581]
at mx.messaging::MessageResponder/status()[C:\autobuild\3.5.0\frameworks\projects\rpc\src\mx\messaging\MessageResponder.as:222]

Answer 1

我不知道 google-app-engine，但我假设您的数据库空间有限？也许您只是空间不足？