文档解释
ORA-25242: cannot change subscriber name from string to string without FIRST_MESSAGE option
Cause: An attempt was made to change the subscriber name while using the NEXT_MESSAGE or NEXT_TRANSACTION option for dequeuing.
Action: To use a subscriber name that is different from the previous dequeue call, reset the dequeuing position by using the FIRST_MESSAGE navigation option.
ORA-25242错误是Oracle数据库中常见的一个错误,它表示发布/订阅事务处理系统中订阅者不能更改订阅者名称而没有 FIRST_MESSAGE 选项。
Oracle官方文档中对于ORA-25242的描述为:
ORA-25242:无法在没有FIRST_MESSAGE选项的情况下从string to string更改订阅者名称
这个错误是指,当我们更改订阅者名称时,必须要设置 FIRST_MESSAGE 选项,如果不设置,则会抛出ORA-25242的异常。
常见案例
一般处理方法及步骤
”alter subscriber subscribery change name subscriberB first_message latest_received”;
上述sql语句改变订阅者subscriberA的名称为subscriberB,同时指定第一条消息为系统当前最新收到的消息。