特殊注册表可以设置为一个希望的值，以便为会话启用特定的维护表对象。
The special register can be set to a desired value to enable certain maintained table objects for a session.
如果DB 2 CODEPAGE注册表变量设置为不正确的值，那么可能会造成不可预期的结果和潜在的数据损失。
If the DB2CODEPAGE registry variable is set to an incorrect value, it may cause unpredictable results and potential data corruption.
将CURRENT REFRESH AGE特殊注册表设置为值any使得在当前连接上下文中，将为优化考虑所有刷新延迟的MQT。
Setting the current refresh AGE special register to the value ANY enables all refresh deferred MQTs to be considered for optimization in the context of the current connection.
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