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How to determine who performed the last full database dump before cumulative dump


ASE 15.7 SP100 allows cumulative backups, and if cumulative dump is tried before a full dump, ASE shows this error:

You cannot execute an incremental dump before a full database dump.

From my experiments, it seems that it does not matter how the full dump is performed (by native isql, or by a 3rd party API). As long as a full dump is done on a database, ASE seems to be keeping track of all the changed pages since the last full dump. So this means that you can perform a full dump using a 3rd party API, and then on isql, if you run a cumulative dump command, the cumulative dump succeeds, which is based on the last full dump by another library!

So, my question is: is there any way to programmatically determine how (by native isql or 3rd party) the last full backup was performed? I believe $SYBASE_HOME/ASE-15_0/dumphist contains this info, but it requires 'enable dump history' to be set first, and I am looking for a solution which does not involve checking a disk file.



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