Date: Thu, 24 Feb 2005 08:51:38 -0500
From: "Joel Fradkin" <jfradkin@wazagua.com>
Subject: Re: Speeds using a transaction vrs not
In-reply-to: <421C38A8.5010809@archonet.com>
To: "'Richard Huxton'" <dev@archonet.com>
Cc: <pgsql-sql@postgresql.org>
Message-id: <001b01c51a77$f704e250$797ba8c0@jfradkin>
MIME-version: 1.0
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No I did not do it in on transaction (although in .net I never started or
commited a transaction.

ODBC :
 myTrans = myConnection.BeginTransaction(IsolationLevel.ReadCommitted)
' Assign transaction object for a pending local transaction
 myCommand.Transaction = myTrans
'example of insert
'myCommand.CommandText = "Insert into Region (RegionID, RegionDescription)
VALUES (101, 'Description')"
myCommand.CommandText = insertsqltext
myCommand.ExecuteNonQuery()
myTrans.Commit()

.net driver:
Dim cmd As New NpgsqlCommand(insertsqltext, cnn)
cmd.ExecuteNonQuery()
cmd.Dispose()

Joel Fradkin
 
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-----Original Message-----
From: Richard Huxton [mailto:dev@archonet.com] 
Sent: Wednesday, February 23, 2005 3:03 AM
To: Joel Fradkin
Cc: pgsql-sql@postgresql.org
Subject: Re: [SQL] Speeds using a transaction vrs not

Joel Fradkin wrote:
> I wrote a .net program to move my data to postgres (works great on
> SQ_ASCII).
> 
> In fiddling around I tried it using the odbc driver and a transaction
> originally, but converted it to using the .net connectivity but no
> transaction.
> 
> What I found was it moved my database (4 gig in MSSQL) in 2 hours using
the
> .net, but 12 hours with the odbc and transaction.

You *are* using transactions, you don't have a choice. Did you do the 
transfer of all 4GB in ONE transaction with the ODBC? Please describe 
the process in more detail.

--
   Richard Huxton
   Archonet Ltd