[ADMIN] Vacuum not removing dead tuples

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От Rui DeSousa
Тема [ADMIN] Vacuum not removing dead tuples
Дата
Msg-id 7D8ED7AF-E189-4FA2-BB6D-FC9E8A127E28@icloud.com
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Ответы Re: [ADMIN] Vacuum not removing dead tuples  (Laurenz Albe <laurenz.albe@cybertec.at>)
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Is there a reason vacuum will not remove dead tuples other than the usual suspects?  There are no two phase transactions and even after a restoring the database from binary backup with nothing connect to the restored instance; vacuum still does not remove the dead tuples.


psql: FATAL:  the database system is starting up
[postgres@pgdb02 ~]$ psql
psql (9.6.5)
Type "help" for help.

pgdb02=# vacuum verbose prod.bb_rate;
INFO:  vacuuming "prod.bb_rate"
INFO:  index "bb_rate_pkey" now contains 210082099 row versions in 495747 pages
DETAIL:  0 index row versions were removed.
1 index pages have been deleted, 0 are currently reusable.
CPU 7.55s/1.35u sec elapsed 12.99 sec.
INFO:  index "bb_rate_idx1" now contains 210082099 row versions in 678445 pages
DETAIL:  0 index row versions were removed.
474 index pages have been deleted, 0 are currently reusable.
CPU 10.46s/2.07u sec elapsed 24.67 sec.
INFO:  "bb_rate": found 0 removable, 190511368 nonremovable row versions in 1070330 out of 2038195 pages
DETAIL:  171750178 dead row versions cannot be removed yet.
There were 28676154 unused item pointers.
Skipped 0 pages due to buffer pins.
0 pages are entirely empty.
CPU 71.52s/45.55u sec elapsed 228.24 sec.
INFO:  vacuuming "pg_toast.pg_toast_419371"
INFO:  index "pg_toast_419371_index" now contains 0 row versions in 1 pages
DETAIL:  0 index row versions were removed.
0 index pages have been deleted, 0 are currently reusable.
CPU 0.00s/0.00u sec elapsed 0.00 sec.
INFO:  "pg_toast_419371": found 0 removable, 0 nonremovable row versions in 0 out of 0 pages
DETAIL:  0 dead row versions cannot be removed yet.
There were 0 unused item pointers.
Skipped 0 pages due to buffer pins.
0 pages are entirely empty.
CPU 0.00s/0.00u sec elapsed 0.00 sec.

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