Delphi 7下测试通过的数据库连接池对象，有ADO和DBExpress两种方式，都兼容了SQLServer和oracle，使用方式为创建TDBExpPool或者TADOPool，执行查询语句直接调用OpenSQL，返回一个TataSet，使用完毕释放。insert语句使用ExecSQL，如果要使用事务，请先调用GetDBConn获取一个DBConn，然后调用Enter，调用Pool的ExecSQL时传入此DBConn，使用完毕Leave即可。-Delphi 7 to test the database connection pool through objects, there are two ways to ADO and DBExpress are compatible with the SQLServer and oracle, used to create TDBExpPool or TADOPool, execute a query directly call OpenSQL, returns a TataSet, released after use. insert statement using ExecSQL, if you want to use transactions, please call GetDBConn get a DBConn, then call Enter, when the incoming call Pool of ExecSQL this DBConn, Leave can be used up.