Environments with high update transaction rates may require more page cleaners to be configured.
在具有高更新事务率的环境下，可能需要配置较多的页清除程序。
Environments with high update transaction rates might require more page cleaners to be configured.
具有较高事务更新率的环境可能需要配置更多页面清洗器。
This support allows you to write a generic update procedure that can be used for any update transaction, regardless of the columns being updated.
这个支持允许您编写一个可用于任何更新事务的通用更新过程，而不管正在更新哪些列。
This transaction can only be called successful if both SQL statements were able to update the table successfully.
只有在两条 SQL语句都能够成功更新表的情况下，事务才会得到成功调用。
Whenever an application needs to access or update the data in a transactional resource, it should (and usually must) use a transaction to do so.
当应用程序需要访问或更新事务资源中的数据时，它应该(通常是必须)使用事务来进行该项工作。
To carry this task out reliably, the sender needs to send the message and update its record of the transmission in a single transaction.
为了能够可靠地执行这个任务，发送方需要在一个单独事务中发送消息以及更新它的传输纪录。
Accessing the database using both JDBC and EJB2 CMP can cause data synchronization issues when update and query are performed together within one transaction.
如果同时使用JDBC和EJB2CMP访问数据库，那么当在一个事务中同时执行更新和查询时会发生数据同步问题。
Unless you cannot avoid processing the incoming messages and database update in a single unit of work, consider using local transaction for performance reasons.
除非您不能避免在单个工作单元中处理收到的消息和数据库升级，否则因为性能的原因要考虑用局部事务处理。
Whenever an application has a single function that needs to access or update the data in multiple transactional resources, it should use a distributed transaction.
当应用程序有一个单独的功能需要访问或更新多个事务资源中的数据时，应该使用分布式事务。
If either the database update or the MQ enqueuing fails, then the entire transaction should roll back.
无论是数据库更新或是MQ 队列产生错误，整个事务都应被取消。
For example, a J2EE transaction could be set to retrieve a message from a JMS provider, extract data from that message, and then attempt to update the database.
例如，可以建立一个J2EE事务来从一个JMS提供者那里获取一条消息，从该消息中提取数据，并尝试更新数据库。
If you are constantly reversing your database update operations, your system will slow down and probably perform more slowly overall than if you were to use one of the other transaction strategies.
如果经常反转数据库更新操作，系统速度会减慢而且与使用其他事务策略相比，这个策略可能会导致整体性能下降。
For the example, it is not the SELECT statement that caused the problematic lock, but the UPDATE statement executed just before the SELECT statement in the same transaction.
例如，不是select语句造成产生问题的锁，但update语句恰好在同一事务中在select语句前执行。
In standard JDBC code without auto-commit, the application USES a connection to access and update data, then commits the connection to end the transaction (and start another).
在没有自动提交的标准JDBC代码中，应用程序使用一个连接来访问和更新数据，然后提交该连接以结束这个事务(并启动另一个事务)。
Optimistic transaction locking should not be used to update sets of rows in a single update statement, as error handling in this case is very difficult.
乐观事务锁不能用于在单个update语句中更新数据行集合，因此在这种情况下，很难进行错误处理。
The corresponding error message is returned for the UPDATE statement in the victim transaction, as shown in Listing 19.
出错的事务的update语句返回相应错误信息，如清单19所示。
As you can see from Listing 4, if an exception is thrown in either of the update methods, it is the client layer method's responsibility to do the necessary transaction rollback.
从清单4中可以看到，如果任何一个更新方法抛出异常，则客户端层方法将负责执行必要的事务回滚。
For example, a stored procedure could update some DB2 UDB data, execute a CICS transaction, and be assured that if any of these operations was to fail, the entire transaction would be rolled back.
例如，一个存储过程可以更新某些DB 2udb数据，并执行CICS事务，如果这些操作中任何一个失败，则整个事务将回滚。
A way to avoid this is to be more optimistic and believe that it is unlikely that another transaction would want to update the same entity at the same time.
避免该问题的方法是变得更乐观些，并认为其它事务并不期望在同一时刻更新同一实体。
This is an infrequently used operation within a short-lived transaction, and there is no reason to take the risk of the update failing.
在短时间的事务中很少使用该操作，因为此操作会导致更新失败的风险。
For example, a query service is often simpler and requires less quality of service (for example, security or transaction reliability) than an update service.
例如，查询服务通常更简单且比更新服务需要更少的服务功能(例如，安全或事务的可靠性)。
The current task or transaction userid needs UPDATE access to the alternate user profile that protects the alternate userid, in order to be authorized to use it.
当前任务或事务userid需要保护替代userid的替代用户配置文件的UPDATE访问权权限，以便获得使用它的授权。
The transaction so far consists of an UPDATE command giving each employee a two percent raise.
到目前为止，这个事务包含一个UPDATE命令，该命令将每个员工的工资提高2%。
The lower-level technique involves starting the transaction at the lowest possible layer in the architecture while still being able to maintain atomicity and isolation of the update operations.
低级(lower - level)技巧涉及在体系结构中尽可能低的层启动事务，同时仍然能够更新操作的原子性和隔离。
It doesn't do the actual update until the implicit transaction is committed, however, using the commit method on the ObjectContainer.
但是，在使用ObjectContainer上的commit方法提交显式事务之前，它不会进行实际更新。
It will also invoke the callback function response to confirm the update when the transaction completes.
它还将在事务完成时调用回调函数response来确认更新。
Using this WebLogic extension makes it impossible for another transaction to read or update data while the first transaction is running.
使用此WebLogic扩展会使当第一个事务正在运行时，另一个事务读取或更新数据成为可能。
Once the update is completed, the table is unlocked and this transaction is logged with logger().
一旦更新完成，解锁这个表并使用logger()记录这个事务。
Once the update is completed, the table is unlocked and this transaction is logged with logger().
一旦更新完成，解锁这个表并使用logger()记录这个事务。
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