我有以下代码
Savepoint sp1 = conn.setSavepoint("save");
，它给出了以下异常
Exception in thread "main" java.lang.UnsupportedOperationException
at sun.jdbc.odbc.JdbcOdbcConnection.setSavepoint(JdbcOdbcConnection.java:1713)
at Transaction.TransSavePoint.main(TransSavePoint.java:32)
这里错了