PZL 有关JAVA使用Oracle的问题及事务实现。
如果一个事务里面还要有事务该怎么办？使用Conn.setAutoCommit(false)?
Proxy Pool 老是出现Couldn't perform the operation prepareStatement: You can't perform any operations on this connection. It has been automatically closed by Proxool for some reason (see logs).异常怎么办？
[解决办法]
for some reason (see logs)
logs是啥呢
[解决办法]
1，事物里嵌套事务，在oracle中只能使用自治事物
2.有可能是你连接池配置错误的问题，也有可能网络问题
