ORA-16086: Redo data cannot be written to the standby redo log
Cause: The primary database was in MAXIMUM PROTECTION or MAXIMUM AVAILABILITY mode, but redo data could not be written to the standby redo log at the standby database(s).
Action: Check the Remote File Server (RFS) trace file for specific errors and reconfigure the standby redo log as appropriate.
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ORA-16086错误是由Oracle数据库引擎使用的Oracle NetServices发出的，表明用户已尝试将redo数据写入基于网络的备份日志。这在Oracle网络数据库架构中是不允许的，因为在网络备份架构中，redo日志文件是只写的，并通过网络将redo日志写入到另一个实例中。