Looking for detailed explanation behind RMAN-08606 error
Hello,
We ran into this error in our rman backup:
RMAN-08606: warning: The change tracking file is invalid
The oracle note on this error is:
What I am looking for are:
1) what internal information rman uses to identify the unmarked blocks against the bct file to throw the error. We understand ctwr keeps 8 versions of bitmap extents of the changed blocks in datafiles by default, but we want to know where the crosscheck reference information is coming from to validate the bct file, is it the controlfile or something else? I could not find any oracle document on this.
We ran into this error in our rman backup:
RMAN-08606: warning: The change tracking file is invalid
The oracle note on this error is:
Cause: Backup found changed blocks that were not marked in the change
tracking file. See alert log for more information.
Action: Do not use any of the incremental backups taken since the last full
backup.
What I am looking for are:
1) what internal information rman uses to identify the unmarked blocks against the bct file to throw the error. We understand ctwr keeps 8 versions of bitmap extents of the changed blocks in datafiles by default, but we want to know where the crosscheck reference information is coming from to validate the bct file, is it the controlfile or something else? I could not find any oracle document on this.
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