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Re: Execute commands in single-user mode - Mailing list pgsql-general

From Melvin Davidson
Subject Re: Execute commands in single-user mode
Date
Msg-id CANu8FizL+2Miw60tq94m6e0PfC2UAxX71TpByHXP6-qymhTjRA@mail.gmail.com
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In response to Execute commands in single-user mode  (Andreas Joseph Krogh <andreas@visena.com>)
Responses Re: Execute commands in single-user mode  (Andreas Joseph Krogh <andreas@visena.com>)
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Well, you can't combine psql with the postgres startup, but you can issue subsequent commands from bash with the -c option:

EG:

postgres --single -O -D $PGDATA $DB_NAME
# give postgres a few seconds to complete startup
sleep 30
psql -U postgres -d your_database -c "alter table pg_largeobject set tablespace some_tablespace;"

pg_ctl stop -d $PGDATA -m fast

BTW, it's always good form to state the exact O/S and version of PostgreSQL, regardless of whether you think it may apply.


On Sun, Jan 10, 2016 at 8:53 AM, Andreas Joseph Krogh <andreas@visena.com> wrote:
Hi all.
 
I'm planning to move all my pg_largeobject tables to separate tablespaces and to be able to do that I need to shuddown PG and start in single-user mode, like this:
 
postgres --single -O -D $PGDATA $DB_NAME
 
Then I have to execute the command:
alter table pg_largeobject set tablespace some_tablespace;
 
Is it possible to issue the above ALTER-statement from the command-line so I can start PG in single-user mode AND execute the ALTER-statement from the command-line i a bash-loop?
 
Thanks.
 
--
Andreas Joseph Krogh
CTO / Partner - Visena AS



--
Melvin Davidson
I reserve the right to fantasize.  Whether or not you
wish to share my fantasy is entirely up to you.
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