On 2/9/21 12:00 PM, Wells Oliver wrote: > Hey guys, I just upgraded a DB from 12 to 13. In testing this seemed to go > well, but it seems like most of my queries are not using the indexes after > the upgrade, so everything is quite so. > > Is there a general need to REINDEX after upgrading to 13, or might there > be another issue? The configuration parameters are the same as they were > persisted via pg_upgradecluster.
Did you also change or upgrade the distro, or modify the collation? (That's an automatic need to rebuild indices.)