一.JDBC 连接Oracle 说明 JDBC 的应用连接Oracle 遇到问题,错误如下: ORA-12505,TNS:listener does not currently know of SID given in connect descriptor TheConnection descriptor used by the client was. 我在DB 层面配置了静态注册,并且GLOBAL_DBNAME和SID_NAME 不一样,以往的配置都是一样的,所以没有发现这个问题. (SID_
selenium获取input时候,发现type=”hidden” 的input无法修改value,经牛人指点,可以使用js修改 首先html源文件如下,设置为text .hidden.submit <html> <head> <title>this is a test </title> <script type="text/javascript"> function display_alert() { alert("
Error ERROR TaskSetManager: Total size of serialized results of 8113 tasks (1131.0 MB) is bigger than spark.driver.maxResultSize (1024.0 MB) ERROR TaskSetManager: Total size of serialized results of 8114 tasks (1131.1 MB) is bigger than spark.driver.
Sqoop version:1.4.6-cdh Hadoop version:2.6.0-cdh5.8.2 场景:使用Sqoop从MSSqlserver导数据 虽然1.4.6的官网说 Even if Sqoop supports a database internally, you may still need to install the database vendor’s JDBC driver in your $SQOOP_HOME/lib path on your client. Sqo
今天项目中报了如下错误 The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. 查了下网上,都是说是mysql默认8小时关闭不用的连接.用数据库连接池导致的.可是项目中这个功能是用来导数据的,是动态连接,直接java jdbc 获取connection的,用完之后就关闭了.最后运维的人员查出来是i