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  1. MySQL(http://www.mysql.com) mysql-connector-java-2.0.14-bin.jar ;  Class.forName( "org.gjt.mm.mysql.Driver" );  com.mysql.jdbc.Driver  cn = DriverManager.getConnection( "jdbc:mysql://MyDbCompute...

Can't start a cloned connection while in manual transaction mode 为了保证多个sql全部执行成功后再提交，执行以下语句 conn.setAutoCommit(false); 然后执行多个执行语句后 conn.commit(); 出现Can't start a cloned connection while i...

在执行如下代码时，经常会出现ora-01000: maximum open cursors exceeded异常for(int i=0;i<balancelist.size();i++){     prepstmt = conn.prepareStatement(sql[i]);     prepstmt.setBigDecimal(1,nb.getRealCost());     pr...