try {
conn = DriverManager.getConnection("jdbc:Oracle:thin:@host:1521:SID","username","userpwd";
conn.setAutoCommit(false);//禁止自動提交，設置回滾點
stmt = conn.createStatement();
stmt.executeUpdate(“alter table …”); //數(shù)據(jù)庫更新操作1
stmt.executeUpdate(“insert into table …”); //數(shù)據(jù)庫更新操作2
conn.commit(); //事務提交
}catch(Exception ex) { 
ex.PRintStackTrace();
try {
conn.rollback(); //操作不成功則回滾
}catch(Exception e) {
e.printStackTrace();
}
}