com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Data source rejected establishment of connection, message from server: Too many connections
最简单的办法是因为你的my.ini中设定的并发连接数太少或者系统繁忙导致连接数被占满解决方式：打开MySQL安装目录打开MY.INI找到max_connections默认是100.--实例WINDOWS解决mysql Errno.:1040错误XXXXinfo:CannotconnecttoMySQLserv...
ORA-25228: timeout or end-of-fetch during message dequeue from string.string
文档解释ORA-25228:timeoutorend-of-fetchduringmessagedequeuefromstring.stringCause:User-specifieddequeuewaittimehaspassedortheendofthequeuehasbeenreachedbutnomessage...
ORA-32310: object materialized views must select from an object table
文档解释ORA-32310:objectmaterializedviewsmustselectfromanobjecttableCause:Anattemptwasmadetocreateanobjectmaterializedviewwhosedefinitionquerydidnotselectfromanobje...
ORA-46086: Cannot detach from a direct-login XS session
文档解释ORA-46086:Cannotdetachfromadirect-loginXSsessionCause:AnattemptwasmadetodetachfromanXSsessioncreatedbyadirectpasswordlogin.Action:TodetachanddestroytheXSses...
ORA-28512: cannot get data dictionary translations from string
文档解释ORA-28512:cannotgetdatadictionarytranslationsfromstringCause:ORACLEwasunabletoretrievedatadictionarytranslationinformationforthenon-Oraclesystemconnectedthr...
ORA-25241: cannot change correlation ID from string to string without FIRST_MESSAGE option
文档解释ORA-25241:cannotchangecorrelationIDfromstringtostringwithoutFIRST_MESSAGEoptionCause:AnattemptwasmadetochangethecorrelationIDwhileusingtheNEXT_MESSAGEorNEXT...