Re: Database server restarting

Look in the archives about disk and memory testing.

memtest86 and some other program.

shoaib wrote:
> Our server reboots at 1 aM in the morning and the job I mentioned starts
> at 4 aM in the morning and the job ended at 4.13 AM. This process is
> database extensive around 10000 records are updated / inserted.Can it be
> the cause of this problem. After this thing happened my server just
> hangs.
>
> Last night I faced the same problem again on another server and it was
> after yet another DB extensive process.
> The system has 1 GB RAM, 1 GHZ processor and RAID 1 installed on it and
> Red Hat linux 7.3.
> We are about to install 70 such servers.
>
> Please help.
>
> regards
> Shoaib
>
> -----Original Message-----
> From: Dennis Gearon [mailto:gearond(at)cvc(dot)net]
> Sent: Monday, May 05, 2003 11:13 PM
> To: shoaib
> Cc: 'Nigel J. Andrews'; pgsql-general(at)postgresql(dot)org
> Subject: Re: [GENERAL] Database server restarting
>
> Modern OS's shouldn' need rebooting, unless something else is wrong.
> What's the quality of your hardware? Any applications compiled on bad
> hardware?
>
> sigh, is it a windows environment?
>
> shoaib wrote:
>
>>Thanks a lot for your prompt reply.
>>We are rebooting the server for cleaning up the buffers of the
>>system.Before rebooting I will shutdown database server.Can you
>
> provide
>
>>any futher clue why suddenly at 4.17 aM it restarted.Our preventive
>>maintenance run at 1 AM.
>>And another process of Reading data from some flat files and updating
>
> it
>
>>to database ended at 4.13 AM on the same day.
>>Your help is really appreciated.
>>
>>Regards
>>Shoaib
>>
>>-----Original Message-----
>>From: Nigel J. Andrews [mailto:nandrews(at)investsystems(dot)co(dot)uk]
>>Sent: Monday, May 05, 2003 7:08 PM
>>To: shoaib
>>Cc: pgsql-general(at)postgresql(dot)org
>>Subject: Re: [GENERAL] Database server restarting
>>
>>On Mon, 5 May 2003, shoaib wrote:
>>
>>
>>
>>>Hello Everybody,
>>>
>>>We are using postgressql 7.2.2 . our system running is 24 hours day it
>>
>>a
>>
>>
>>>preventive reboot once a day.
>>
>>
>>Odd concept. What is this reboot preventing?
>>
>>
>>
>>
>>>some time I am getting this error and after
>>>it the sytem hang .Can any body help in this.
>>>
>>>DEBUG: pq_recvbuf: unexpected EOF on client connection
>>>DEBUG: pq_recvbuf: unexpected EOF on client connection
>>>DEBUG: pq_recvbuf: unexpected EOF on client connection
>>>DEBUG: pq_recvbuf: unexpected EOF on client connection
>>>DEBUG: database system was interrupted at 2003-05-03 04:17:19 SGT
>>>DEBUG: checkpoint record is at 3/85EA18B0
>>>DEBUG: redo record is at 3/85EA18B0; undo record is at 0/0; shutdown
>>>FALSE
>>>DEBUG: next transaction id: 4111285; next oid: 7557242
>>>DEBUG: database system was not properly shut down; automatic recovery
>>>in progress
>>
>>
>>It looks like your preventative daily reboot is not preventing the
>>problems it
>>is causing. It is possible that the postmaster is not being shutdown
>>properly
>>because, for example, there is a client still connected and the
>
> shutdown
>
>>script
>>isn't forcing a fast shutdown. See pg_ctl manpage for infomation on
>
> the
>
>>switches.
>>
>>As for worrying about the messages, there's no real error message in
>>there,
>>aside from the 'EOF on client connection', just the normal messages on
>>start up
>>from a bad shutdown. If you're worried, I would look at solving
>
> whatever
>
>>the
>>answer to the daily reboot question shows is the problem.
>>
>>
>>
>>
>>>DEBUG: ReadRecord: record with zero length at 3/85EA18F0
>>>DEBUG: redo is not required
>>>DEBUG: recycled transaction log file 0000000300000083
>>>DEBUG: recycled transaction log file 0000000300000084
>>>DEBUG: database system is ready
>>>DEBUG: pq_recvbuf: unexpected EOF on client connection
>>>
>>>
>>>Regards
>>>
>>>Shoaib
>>>
>>>
>>
>>
>
>
> ---------------------------(end of broadcast)---------------------------
> TIP 4: Don't 'kill -9' the postmaster
>
>