Remove circular "25.1.5.1. Multixacts And Wraparound" link that
references the section that the link itself appears in. An explanation
of MultiXactId age appears only a few sentences before the link, so
there's no question that the link is superfluous at best.
Oversight in commit
d5409295.
Author: Peter Geoghegan
Backpatch: 14-
As a safety device, an aggressive vacuum scan will
- occur for any table whose multixact-age (see
- linkend="vacuum-for-multixact-wraparound"/>) is greater than
+ occur for any table whose multixact-age is greater than
linkend="guc-autovacuum-multixact-freeze-max-age"/>. Also, if the
storage occupied by multixacts members exceeds 2GB, aggressive vacuum
scans will occur more often for all tables, starting with those that