这是java通过JDBC使用数据池连接数据库的小实例源码，有oracle和mysql两个实例-This is a java through JDBC data pool to connect to the database instance of the source code, oracle and mysql two instances

本代码为使用JDBC接口链接oracle数据库的JAVA源码，并包含实现增删改查操作-This Java source code for the link to oracle database using the JDBC interface and contains functions that implement the CRUD operations