ORA-38870: cannot backup a control file that may have incorrect data file structure.

Recently,

setting one of standby databases I have faced quite interesting error message:

ORA-38870: cannot backup a control file that may have incorrect data file structure

It appeared when I was doing some controlfile maintenance using RMAN, like deleting references to old/unavailable backups and archive logs and CONTROLFILE AUTOBACKUP was ON.

Looking at this message someone may decide that there are some VERY SERIOUS PROBLEMS with CONTROLFILE Continue reading

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