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Re: [JDBC] number of transactions doubling

From: Heikki Linnakangas <heikki(at)enterprisedb(dot)com>
To: "Jim C(dot) Nasby" <jim(at)nasby(dot)net>
Cc: Sriram Dandapani <sdandapani(at)counterpane(dot)com>, pgsql-jdbc(at)postgresql(dot)org, pgsql-admin(at)postgresql(dot)org
Subject: Re: [JDBC] number of transactions doubling
Date: 2006-09-29 08:56:15
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Lists: pgsql-adminpgsql-jdbc
Jim C. Nasby wrote:
> On Thu, Sep 28, 2006 at 02:51:24PM -0700, Sriram Dandapani wrote:
>> The target table has triggers that route data to appropriate tables. The
>> tables to which data is routed has check constraints that do further
>> inserts. (All of this happens in 1 jdbc transaction)
> Actually, no matter what JDBC is doing, all of that will happen within a
> single transaction on the database (unless you're using something like
> dblink from within the triggers). So even if you were issuing insert
> statements with autocommit on, you'd see at most one transaction per
> insert.

The triggers might use subtransactions. You get implicit subtransactions 
if have an EXCEPTION clause in a plpgsql function. I'm not sure if 
there's other things that do that as well.

  Heikki Linnakangas

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