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Re:Improved vacuum in PostgreSQL 13 by ComodoHacker on Tuesday May 12, 2020 @01:28PM (#23156775)
Avoiding ORA-01555 is a matter of properly sizing your undo.
Re:Improved vacuum in PostgreSQL 13 by marcosdumay on Tuesday May 12, 2020 @04:16PM (#23159143)
And a matter of not getting any task that is slower than what you expected.