Re: outOfMemoryError
От | Dave Cramer |
---|---|
Тема | Re: outOfMemoryError |
Дата | |
Msg-id | DE16CA8B-FB61-429B-92B3-D859DA009E3D@fastcrypt.com обсуждение исходный текст |
Ответ на | Re: outOfMemoryError ("Vidas Makauskas" <vms@centras.lt>) |
Ответы |
Re: outOfMemoryError
Re: outOfMemoryError |
Список | pgsql-jdbc |
This design is limited by memory. You would be far better off inserting directly instead of using a ResultSet Dave On 29-Aug-06, at 9:22 AM, Vidas Makauskas wrote: >> 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; > } > > > > ---------------------------(end of > broadcast)--------------------------- > TIP 4: Have you searched our list archives? > > http://archives.postgresql.org >
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