snapshot too old when logical backup happen in the background
hi all,need to understand exactly how does the data pump works.
I got this error sometime, think is when the logical export is running, there is some kind of batch job running at the same time on this table FGHN_DETACH and crashes with the export job.
i was thinking why oracle will choose to skip it?
Can i assume that there is some kind of DML happening in the background as there is a ora-01555 error. Meaning something is updating on this table and while the export utility is 'reading' it, plus the undo is also phase out, thus both error appear?
I got this error sometime, think is when the logical export is running, there is some kind of batch job running at the same time on this table FGHN_DETACH and crashes with the export job.
i was thinking why oracle will choose to skip it?
Can i assume that there is some kind of DML happening in the background as there is a ora-01555 error. Meaning something is updating on this table and while the export utility is 'reading' it, plus the undo is also phase out, thus both error appear?
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