原文地址：http://bbs.phpres.com/viewthread.php?tid=1736

all:
database1:
class: sfPropelDatabase
param:
dsn: pgsql://foo:bar@hostname/database1

database2:
class: sfPropelDatabase
param:
dsn: mysql://foo:bar@hostname/database2

先建立一个
PROJECT_DIR/config/database1.schema.xml
再建立一个
PROJECT_DIR/config/database2.schema.xml

最后build一下:

$ symfony propel-build-model

调用例子：

$database1_connection_handler = Propel::getConnection(FooPeer::DATABASE_NAME);
$database2_connection_handler = Propel::getConnection(BarPeer::DATABASE_NAME);