Обсуждение: Backend crash

I am facing some problem while using postgres (version 7.3.1)

On trying to execute a psql command  from the postges interactive terminal
as user 'test' (which exists in the pg database), pgsql seems to be
crashing.

The postmaster log file contains the following -
--------------------------------------------------------------------------------
WARNING:  ROLLBACK: no transaction in progress
FATAL:  Password authentication failed for user "test"
LOG:  fast shutdown request
LOG:  shutting down
.......
StreamConnection: accept() failed: Connection aborted
------------------------------------------------------------------------------------


Can anyone please tell me why postmaster is shutting down ?   What all
causes the SIGINT signal to be sent to postmaster that causes rollback of
open transactions and  disconnection of open connections ?

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"angshumitra ghosh" <angshumitrag@hotmail.com> writes:
> Can anyone please tell me why postmaster is shutting down ?   What all
> causes the SIGINT signal to be sent to postmaster that causes rollback of
> open transactions and  disconnection of open connections ?

I suspect that you are doing something roughly along the lines of

    postmaster ... &

    psql ...

    ^C

When you launch the postmaster from an interactive session, it is still
susceptible to being SIGINT'd by your shell unless you take steps to
prevent that.  When I need to manually launch a postmaster, I usually
do this sort of thing:

    nohup postmaster ...args... </dev/null >logfile 2>&1 &

The combination of nohup and making sure that none of stdin, stdout,
stderr are still connected to your terminal is enough to disconnect
the postmaster from your shell session in the Unixen that I've used.

            regards, tom lane