嘿,我编写了一个EJB程序,并从我的SQL数据库创建了实体类。一切运行正常,它可以连接到我的数据库,但由于某些原因,我现在收到这个错误。WARNING: RAR5038:Unexpected exception while creating resource for pool mysql_carrent_rootPool..optional.MysqlDataSource
WARNING: RAR5117 : Failed to obtain/create connection from con
= "SELECT bd_brushfilepath FROM tbl_brushdescription WHERE bd_brushid = $idreceived";$filepath = mysql_fetch_assoc($Recordset($updatedownlaodquery,$connection_psfriend) or die(<