rac

abbr.

1. （英国）皇家汽车俱乐部
   Royal Automobile Club . The RAC is a British organization which provides services for car owners.

1. There are several ways you can configure the RAC environment in a WebSphere product.
   可以通过多种方法在WebSphere产品中配置RAC环境。
2. For each connection request, the Oracle JDBC driver randomly picks up a RAC node for obtaining connections.
   对于每个连接请求，OracleJDBC驱动程序将随机选择一个RAC节点来获取连接。
3. Since the Oracle JDBC driver is not providing any load balancing, all of these inbound requests will open and use connections from the same RAC node.
   由于OracleJDBC驱动程序不提供任何负载平衡，所有这些入站请求都将打开并使用来自同一RAC节点的连接。
4. Oracle distributes the connection requests to RAC nodes using a random algorithm.
   Oracle使用随机算法把连接请求分发给RAC节点。
5. The primary and secondary RAC nodes are specified positionally in the data source URL.
   RAC主节点和辅助节点将在数据源URL中按位置指定。
6. Oracle attempts to distribute the data block's ownership uniformly across all RAC nodes.
   Oracle尝试跨所有RAC节点统一分发该数据块的所有权。
7. In general, such a random distribution algorithm uses all the RAC nodes in an uniform way.
   一般情况下，此类随机分发算法以统一方式使用全部RAC节点。
8. If a RAC node stops working, Oracle will not failover the DTP service until the Oracle RAC cleanup and recovery is complete.
   如果RAC节点停止工作，Oracle需要在完成OracleRAC清理和恢复之后才能对DTP服务进行故障转移。
9. Specifying the load-balance or failover in the URL when Oracle services are used will not affect the RAC nodes'load balance or failover.
   在使用Oracle服务时在URL中指定负载平衡或故障转移不会影响RAC节点的负载平衡或故障转移。
10. The JDBC driver will obtain new connections from the running RAC nodes.
    该JDBC驱动程序将从运行的RAC节点获取新的连接。
11. In an Oracle RAC environment, every Oracle data block is assigned one ( and only one)" Master "Oracle RAC node.
    在OracleRAC环境中，每个Oracle数据块都被赋予一个（且只有一个）“主”OracleRAC节点。
12. The Global Cache Service ( GCS) of that Oracle RAC node is responsible for managing access to these sets of data blocks.
    该OracleRAC节点的全局缓存服务（GCS）负责管理对这些数据块集的访问。
13. Again, in this approach for using Oracle RAC in a WebSphere product, you have to simply specify the RAC-ified URL as the Oracle URL when defining the relevant Oracle JDBC data sources.
    而且，在WebSphere产品中使用OracleRAC这一方法中，在定义相关的OracleJDBC数据源时，您只需将RAC-ifiedURL指定为OracleURL。
14. In case the first RAC node is not available, the JDBC driver will try to obtain connections from the second RAC node, and so on.
    如果第一个RAC节点不可用，JDBC驱动程序将尝试从第二个RAC节点中获取连接，依此类推。
15. Support has also been added for Highly Available ( HA) databases, including DB2 HADR and Oracle RAC.
    还添加了对高可用性（HA）数据库（包括DB2HADR和OracleRAC）的支持。
16. The URLs illustrated in this article can also be used in a WebSphere Process Server environment for automatic and smooth2PC distributed transaction recovery, should there be a RAC node failure.
    本文中演示的URL还可用于WebSphereProcessServer环境，以便在出现RAC节点故障时自动而顺利地恢复2PC分布式事务。
17. Configure a non-RAC Oracle data source, even if the Oracle environment is already a RAC one.
    配置一个非RACOracle数据源，即使Oracle环境已经是RAC环境。
18. The Oracle database administrator ( DBA) will consider many factors related to failover, load balancing, and others while creating and configuring an RAC.
    Oracle数据库管理员（DBA）在创建和配置RAC时需要考虑与故障转移、负载平衡以及其他事项相关的诸多因素。
19. Instead, the database administrator will have to manually move the service to the restarted RAC node.
    相反，数据库管理员需要手动将该服务移动到重启的RAC节点。
20. In addition to high availability, Oracle RAC can also be configured to provide workload balancing; workload balance to the database happens at the connection level.
    除高可用性外，还可以将OracleRAC配置为提供工作负载平衡；数据库的工作负载平衡在连接级别发生。
21. The WebSphere transaction manager then attempts to get a new connection to RAC.
    WebSphere事务管理器将尝试获取到RAC的新连接。
22. There can be multiple secondary RAC nodes.
    可能会有多个辅助RAC节点。
23. The Oracle JDBC driver can be configured for failover or load balancing ( or both) in an Oracle RAC environment.
    在OracleRAC环境中，可以将OracleJDBC驱动程序配置为用于故障转移或负载平衡（或者同时用于两者）。
24. However, only one RAC node, the first functional node in the list of RAC nodes in a URL like ( 2) will be used to obtain physical connections.
    但是，只有一个RAC节点，即URL中RAC节点列表中第一个起作用的节点（如（2））将用来获取物理连接。
25. Research and analysis of Oracle 10g RAC technology
    Oracle10gRAC技术研究与分析
26. Choksi next talked about the Advanced Pack for Oracle RAC.
    然后，Choksi还谈到了面向OracleRAC的高级包。
27. They also push data from the Platinum cluster into an instance of Oracle RAC.
    他们还将数据从白金集群推送到一个OracleRAC实例。
28. S& P plans to use its RAC ratio as an element of future credit ratings analysis.
    标普计划把rac比率用作未来信用评级分析的一项要素。
29. Based on their interactions with these developers SpringSource has found that many are not taking advantage of RAC features such as data types and fail over support.
    在与这些开发者的交流中，SpringSource发现很多开发者都没有充分利用到RAC特性的优势，例如数据类型和失败转移的支持。
30. Research of the Methods of Cache Optimization in the Oracle RAC Database
    ORACLERAC数据库缓存优化方法研究