Re: [SQL] Inserting into table only if the row does not already

2004-10-16 Thread Steven Klassen
* C. Bensend <[EMAIL PROTECTED]> [2004-10-15 08:14:51 -0500]:

> Concurrency shouldn't be an issue - this is a perl script running
> from cron. The only concurrency that will ever happen is if I'm a
> bonehead and I run the script manually right as cron kicks off
> another copy.

Even cron'd scripts can run amok. Lock files are great as a CYA
measure even if you're relatively certain there will be no opportunity
for one copy to step on the next.

I once had a cron'd script mail upper management every hour I was on
vacation. You can imagine how long it was until I got another vacation
request approved. ;)

-- 
Steven Klassen - Lead Programmer
Command Prompt, Inc. - http://www.commandprompt.com/
PostgreSQL Replication & Support Services, (503) 667-4564

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Re: [SQL] Inserting into table only if the row does not already

2004-10-16 Thread C. Bensend

> Even cron'd scripts can run amok. Lock files are great as a CYA
> measure even if you're relatively certain there will be no opportunity
> for one copy to step on the next.

Yes, you are absolutely correct, of course.  :)

I should be more specific - I'm working on a personal project, and I'm
not going to worry about that right now.  The risk of a cron gone wild
is acceptable to me at this moment.

Right now my priority is getting data flowing into the database instead
of piling up on the host like it is.  :)

Thanks much!

Benny


-- 
"Even if a man chops off your hand with a sword, you still have two nice,
sharp bones to stick in his eyes."
  -- .sig on Slashdot




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[SQL] Database backup

2004-10-16 Thread sreejith s
Hai,
How to take Database backup from an application developed in Visual
Basic thats running at Windows Client and Database resting at Linux
Server. THanx

Sreejith

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Re: [SQL] Database backup

2004-10-16 Thread Steven Klassen
* sreejith s <[EMAIL PROTECTED]> [2004-10-17 08:49:44 +0530]:

> How to take Database backup from an application developed in Visual
> Basic thats running at Windows Client and Database resting at Linux
> Server. THanx

pg_dump -U your_username your_database > your_database.sql

-- 
Steven Klassen - Lead Programmer
Command Prompt, Inc. - http://www.commandprompt.com/
PostgreSQL Replication & Support Services, (503) 667-4564

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Re: [SQL] Inserting into table only if the row does not already

2004-10-16 Thread Greg Stark

"C. Bensend" <[EMAIL PROTECTED]> writes:

> The risk of a cron gone wild is acceptable to me at this moment.

Gee, now I have images of late-night advertisements for bofh-porn video tapes
of Cron Jobs Gone Wild(tm) dancing through my head... thanks.

-- 
greg


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Re: [SQL] Inserting into table only if the row does not already

2004-10-16 Thread C. Bensend

> Gee, now I have images of late-night advertisements for bofh-porn video
> tapes
> of Cron Jobs Gone Wild(tm) dancing through my head... thanks.

Wow.  THERE'S something I didn't need before hitting the sack.  ;)

Benny


-- 
"Even if a man chops off your hand with a sword, you still have two nice,
sharp bones to stick in his eyes."
  -- .sig on Slashdot




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