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Re: perl and large objects

From: Sean Davis <sdavis2(at)mail(dot)nih(dot)gov>
To: "Daniel Verite" <daniel(at)manitou-mail(dot)org>
Cc: "pgsql-interfaces" <pgsql-interfaces(at)postgresql(dot)org>
Subject: Re: perl and large objects
Date: 2005-05-19 10:05:36
Message-ID: 4dc77e1fc370855bf943a592b665e88c@mail.nih.gov (view raw or flat)
Thread:
Lists: pgsql-interfaces
On May 18, 2005, at 7:07 PM, Daniel Verite wrote:

> 	Sean Davis wrote:
>
>> I am new to large objects and have a simple test script that dies (at
>> the lo_import line) and I don't know why (no descriptive error given).
>> Any suggestions (or a quick tutorial)?  The DBD manual just wasn't
>> quite enough for me, I guess.
>
> The lack of error message feels like what happens when you call lo_*
> functions outside of a transaction. IIRC you just get 0 as the 
> resulting
> oid to a lo_import, for instance.
>
> You could try adding $dbh->do("select 1") just after 
> $dbh->{AutoCommit}=0
> to ensure that a transaction is started before the lo_import.
>
> Also, your code snippet runs fine for me, unmodified, with DBD::Pg 1.21
> Are you running an older version?
>

DBD::Pg-1.41

It was indeed that the transaction was not started.  Putting in a 
couple of "select 1" worked just fine.

Thanks for the help.

Sean


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