For user and server processes, PMON will release the locks held by users, roll back every uncommitted transaction, and release any resources this process is using.
而对于用户和服务器进程，PMON将释放用户持有的锁，回滚每个未提交事件，并释放该进程正在使用的所有资源。
When DB2 performs an index or table scan, DB2 will block on a row lock when it comes across an uncommitted row which another transaction has exclusively (X) locked.
DB2在执行索引或表扫描时，如果遇到一个被另一个事务独占 (X) 锁定的未提交行，那么 DB2将阻塞在行锁上。
Isolation: the degree of isolation this transaction has from the work of other transactions. For example, can this transaction see uncommitted writes from other transactions?
事务隔离：当前事务和其它事务的隔离的程度。例如，这个事务能否看到其他事务未提交的写数据？
We show that this protocol is free of deadlock and in addition a high priority transaction is not blocked by uncommitted lower priority transactions.
这个协议可以避免死锁，而且高优先级事务不会被未提交的低优先级事务阻塞。
Each query executed by a transaction sees only data that was committed before the query (not the transaction) began. An Oracle query never reads dirty (uncommitted) data.
事务中的查询只能看到在此查询之前(而非事务开始之前)提交的数据。
Each query executed by a transaction sees only data that was committed before the query (not the transaction) began. An Oracle query never reads dirty (uncommitted) data.
事务中的查询只能看到在此查询之前(而非事务开始之前)提交的数据。
应用推荐