OLE DB, OleDbConnection模式:
<add key="ConnectionString" value="Provider=OraOLEDB.Oracle.1;Data Source=orcl;User ID=sysman;Password=sa;Unicode=True"/>
<add key="ConnectionString" value="Provider=OraOLEDB.Oracle.1;Data Source=orcl;User ID=sysman;Password=sa;Unicode=True"/>
OracleConnection 模式:
<add key="orclConnStr" value="Data Source=orcl;User ID=exp;Password=sql;"/>