Re: DB wal file disabled --_Query

Hi All,

Archive mode is already disabled. If more wal files will generate fs also
reached 100 percent based on application data load.

As updated archive enabled or disabled. Will any state wall file that
will be generate correct?

On Wed, Nov 13, 2024 at 9:54 PM Adrian Klaver <adrian(dot)klaver(at)aklaver(dot)com>
wrote:

> On 11/13/24 08:15, jayakumar s wrote:
> > Hi Team,
> >
> > We have disabled walfile ion database level. While I do manual switch
> > wal file generating in wal file location.
> >
> > Here is my question if we disable it. Walfile won't generate am i
> correct?
> >
> > Kindly clarify my doubts.
> >
> > postgres=# select name,setting from pg_settings where name like
> 'archive%';
> > name | setting
> > -----------------+------------
> > archive_command | (disabled)
> > archive_mode | off
> > archive_timeout | 0
> > (3 rows)
>
> The above is disabling the archiving of WAL files to another location.
> WAL will still be written to pg_wal.
>
> What are you trying to achieve?
>
> You can specify individual tables be UNLOGGED as shown here:
>
> https://www.postgresql.org/docs/current/sql-createtable.html
>
> "UNLOGGED
>
> If specified, the table is created as an unlogged table. Data
> written to unlogged tables is not written to the write-ahead log (see
> Chapter 28), which makes them considerably faster than ordinary tables.
> However, they are not crash-safe: an unlogged table is automatically
> truncated after a crash or unclean shutdown. The contents of an unlogged
> table are also not replicated to standby servers. Any indexes created on
> an unlogged table are automatically unlogged as well.
>
> If this is specified, any sequences created together with the
> unlogged table (for identity or serial columns) are also created as
> unlogged.
> "
>
>
>
>
> >
> > postgres=#
> >
> > postgres=# SELECT pg_switch_wal();
> > pg_switch_wal
> > ---------------
> > D/9D000000
> > (1 row)
> >
> > [postgres(at)xxxxxxxxx pg_wal]$ ls -lrt
> > total 81920
> > drwx------. 2 postgres postgres 6 Oct 13 2020 archive_status
> > -rw-------. 1 postgres postgres 16777216 Nov 13 20:47
> > 000000010000000D0000009F
> > -rw-------. 1 postgres postgres 16777216 Nov 13 20:50
> > 000000010000000D000000A0
> > -rw-------. 1 postgres postgres 16777216 Nov 13 20:51
> > 000000010000000D000000A1
> > -rw-------. 1 postgres postgres 16777216 Nov 13 21:02
> > 000000010000000D0000009D
> > -rw-------. 1 postgres postgres 16777216 Nov 13 21:02
> > 000000010000000D0000009E
> > [postgres(at)# pg_wal]$
>
> --
> Adrian Klaver
> adrian(dot)klaver(at)aklaver(dot)com
>
>