Re: outOfMemoryError

From: "Vidas Makauskas" <vms(at)centras(dot)lt>
To: pgsql-jdbc(at)postgresql(dot)org
Subject: Re: outOfMemoryError
Date: 2006-08-29 13:22:07
Message-ID: ed1evf$1lqb$1@news.hub.org
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> Can you post your basic loop ?
>

ResultSet oracle = <"SELECT * FROM oracle">
ResultSet postgres = <SELECT oid,* FROM postgres WHERE oid=0>
ResultSetMetaData rsmd = postgres.getMetaData();
int vnt = rsmd.getColumnCount();
int rows = 0;
while (oracle.next()) {
<***** SEE BELLOW ******>
postgres.moveToInsertRow();
for (int i=1; i <= vnt; i++)
if ( ! "oid".equals(rsmd.getColumnName(i)))
if (oracle.getObject(rsmd.getColumnName(i)) != null)
postgres.updateObject(i, oracle.getObject(rsmd.getColumnName(i)));
postgres.insertRow();
}

> From what I can see your expectations are a little unrealistic how do you
> expect to process 10G rows at a time?
rows += 1;
if ( rows > 100000 ) {
postgres = <SELECT oid,* FROM postgres WHERE oid=0>
rsmd = postgres.getMetaData();
rows = 0;
}

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