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List:       postgresql-general
Subject:    re PG 9.6x and  found xmin  from before relfrozenxid  and removal of pg_internal.init file(s)
From:       Reid Thompson <Reid.Thompson () omnicell ! com>
Date:       2020-09-28 14:19:40
Message-ID: 29aee54495d509eb005a8fca1e27ad949fae89da.camel () omnicell ! com
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We have a planned upgrade that would permanentlty remedy this.

regarding the below errors on our PG 9.6.x instance.

2020-09-28 09:08:15.741 EDT,,,26212,,5f71e03f.6664,1,,2020-09-28 09:08:15 \
EDT,250/9136136,0,ERROR,XX001,"found xmin 2675436435 from before relfrozenxid \
321165377",,,,,"automatic vacuum of table ""postgres.pg_catalog.pg_authid""",,,,"" \
2020-09-28 09:08:15.751 EDT,,,26212,,5f71e03f.6664,2,,2020-09-28 09:08:15 \
EDT,250/9136138,0,ERROR,XX001,"found xmin 2675019557 from before relfrozenxid \
321165377",,,,,"automatic vacuum of table \
""postgres.pg_catalog.pg_auth_members""",,,,""

I know that a db restart will reset the 'counter' (reset the
pg_internal.init files??)  on this issue.  We would rather avoid a
restart if possible. Some research on the internet found a page
suggesting that removal of pg_internal.init file(s) on a running system
would provide the same temporary resolution as a restart???   Is this a
valid temporary work around for this issue?  If it is, is there a
particular pg_internal.init file that needs to be removed, or just
remove all pg_internal.init that can be found?


Thanks,
reid


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