Re: TOAST Table / Dead Tuples / Free Pages
| От | Kashif Zeeshan |
|---|---|
| Тема | Re: TOAST Table / Dead Tuples / Free Pages |
| Дата | |
| Msg-id | CAAPsdhfgtid0=b4j0xC=MNG1tpQrMxL6OJb9GHm+PC7jVQG+WA@mail.gmail.com обсуждение исходный текст |
| Ответ на | TOAST Table / Dead Tuples / Free Pages ("Shenavai, Manuel" <manuel.shenavai@sap.com>) |
| Ответы |
Re: TOAST Table / Dead Tuples / Free Pages
Re: TOAST Table / Dead Tuples / Free Pages |
| Список | pgsql-general |
Hi
You can use the CLUSTER command, which will physically reorder the table based on index, effectively reducing the size of the table without using VACUUM.
CLUSTER your_table USING your_index;
Or you can use the pg_repack extension as well.
pg_repack -d your_database -t your_table
Regards
Kashif Zeeshan
On Thu, Jun 13, 2024 at 12:55 PM Shenavai, Manuel <manuel.shenavai@sap.com> wrote:
Hi everyone,
I created a simple scenario to understand the handling of TOASTs: There is an empty database with a single table and record. The single record gets updated multiple times with 10MB (bytea column). I can see that the table/toasttable size is growing (500MB).
Now I tried to find a way to get the DB size down again (it should be around 10MB instead of 500MB). I don’t want to use VACUUM FULL due to the exclusive lock.
Is there any way to remove the dead tuples and free the pages?
Thanks in advance &
Best regards,
Manuel
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