12c R2 DB Alert Log频繁输出”An internal routine has requested a dump of selected redo”

1套Oracle 12.2 4Nodes RAC ON SELS11的本地磁盘使用率告警,DIAG目录在不断的生成redo dump的trace file, db alert log也在不停的显示如下信息:
An internal routine has requested a dump of selected redo.
This usually happens following a specific internal error

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