通过 JDBC-ODBC 桥使用保存点：UnsupportedOperationException

Posted 2023-03-29

【中文标题】通过 JDBC-ODBC 桥使用保存点：UnsupportedOperationException

【英文标题】：Using savepoints with the JDBC-ODBC Bridge: UnsupportedOperationException

【发布时间】：2014-11-10 06:16:52

【问题描述】：

我已将 NetBeans IDE 与 MS Access 连接，并且在执行事务时出现此错误。 似乎不支持保存点...请指导我..

             Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
            conn = DriverManager.getConnection("jdbc:odbc:cse");
            Statement stmt1, stmt2, stmt3;
                     System.out.println("Statements created");
            conn.setAutoCommit(false);
            String query1 = " update registration set id='105' " + 
                            "where first = 'Sumit' ";
            String query2 = " update registration set id='106' " + 
                            "where first = 'Zayed' ";
             System.out.println(" Queries created");


            stmt1 = conn.createStatement();
            System.out.println(" Connection created");
            Savepoint s1 = conn.setSavepoint("sp1");
             System.out.println(" Savept created");

            stmt2 = conn.createStatement();

            stmt1.executeUpdate(query1);
            stmt2.executeUpdate(query2);

            conn.commit();

            stmt3 = conn.createStatement();

            stmt1.close();
            stmt2.close();
            conn.releaseSavepoint(s1);
            conn.close();

错误是 创建的语句 创建的查询 已创建连接 错误：java.lang.UnsupportedOperationException

【参考方案1】：

JDBC-ODBC 桥显然根本不支持保存点。但是，UCanAccess JDBC 驱动程序确实支持未命名的保存点：

String connStr = "jdbc:ucanaccess://C:/__tmp/test.mdb";
try (Connection conn = DriverManager.getConnection(connStr)) 
    conn.setAutoCommit(false);
    try (Statement s = conn.createStatement()) 
        s.executeUpdate("UPDATE ucaTest SET Field2='NEWVALUE1' WHERE ID=1");
    
    java.sql.Savepoint sp1 = conn.setSavepoint();
    try (Statement s = conn.createStatement()) 
        s.executeUpdate("UPDATE ucaTest SET Field2='NEWVALUE2' WHERE ID=2");
    
    conn.rollback(sp1);
    conn.commit();
 catch (Exception e) 
    e.printStackTrace(System.out);

有关使用 UCanAccess 的更多信息，请参阅

Manipulating an Access database from Java without ODBC