oracle基础教程(8)oracle修改字符集 1.用dba连接数据库 -->sqlplus / as sysdba 2.查看字符集 -->SELECT parameter, value FROM v$nls_parameters WHERE parameter LIKE '%CHARACTERSET'; 好像结果: PARAMETER ---------------------------------------------------------------- VALUE -------
1.problem describe: when your dependency jar about oracle use code like this: <!-- oracle-connector --> <dependency> <groupId>com.oracle</groupId> <artifactId>ojdbc14</artifactId>
1.Some projects cannot be imported because they already exist in the workspace 2.Some projects were hidden because they exist in the workspace directory 这种情况基本是以下错误操作造成: 1.手动删除本地磁盘下的工程目录 2.删除时,没有勾选Delete project contents on disk(cannot be undone) 以上2
最近项目中遇见一问题,在开发环境没有问题的代码,到了生产环境就会报如下错误: 严重: A web application registered the JBDC driver [oracle.jdbc.OracleDriver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregis