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EJB2 CMP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。

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When update activity is excessive, the ability of cluster replication to maintain database synchronization becomes limited if the server is not sized properly.

如果没有适当地安排服务器的大小，当更新活动比较频繁时，集群复制维护数据库同步的能力就会受到限制。

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Use Disable Logical Model Synchronization when you want to individually update, commit or synchronize.emx and.efx file artifacts.

当您个人想要更新，指定或者同步化. emx和. efx工件时，使用Disable Logical Model Synchronization。

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