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Active Data Guard and Undo and ora-01555

user11993454Nov 2 2010 — edited Feb 25 2011
Hi

We have an 11.1.0.7 two-node RAC primary with a single instance Active Data Guard physical standby. When running a datapump export from the standby, we get an ORA-01555 although the undo_retention is set way beyond the run time for the export.

I'm looking to better understand undo within the context of Active Data Guard. Is there any dependency for undo between the primary(s) and standby? Are the undo settings (undo_retention, undo tablespace size..) on the primary and standby independent of each other?

Thanks.
This post has been answered by Dr. Paranoid-Oracle on Feb 25 2011
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Locked on Mar 25 2011
Added on Nov 2 2010
#data-guard, #performance-availability
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