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SQL注入与防止及myBaits基本作用

SQL注入在嵌入式SQL编程中，sql语句通常是以字符串的形式提交给数据库管理系统的。SQL注入是利用SQL语法将一些恶意代码加入到该字符串中，从而获取到非授权的数据。如：用户登录（假设用户名为admin，密码为123456），通常使用以下语句进行判断 select * from ...

开发笔记 ·2024-10-09

linux编译报错：/usr/include/c++/7/cstdlib:41:10: fatal error: bits/c++config.h: No such file or directory

今天在Linux中编译C/C++的程序遇到如下错误：make[3]:Leavingdirectory'/home/v2ray/lede/feeds/luci/applications/luci-app-upnp'time:package/feeds/luci/luci-app-upnp/compile#...

开发笔记 ·2024-08-29

ORA-32042: recursive WITH clause must reference itself directly in one of the UNION ALL branches

文档解释ORA-32042:recursiveWITHclausemustreferenceitselfdirectlyinoneoftheUNIONALLbranchesCause:AWITHclausequeryreferredtoitself(recursive)indirectly,suchasthrougha...

IT技术学习 ·2023-07-28

ORA-22887: type of REF column is not the same as that of its scoped table

文档解释ORA-22887:typeofREFcolumnisnotthesameasthatofitsscopedtableCause:ThetypespecifiedfortheREFcolumnandthetypespecifiedforthescopetablearedifferent.Action:Ensur...

IT技术学习 ·2023-07-28

ORA-19155: FOCH0004: collation does not support collation units

文档解释ORA-19155:FOCH0004:collationdoesnotsupportcollationunitsCause:AnerroroccurredduringtheprocessingoftheXQueryexpression.Action:Checkthedetailederrormessagefor...

IT技术学习 ·2023-07-28

ORA-28331: encrypted column size too long for its data type

文档解释ORA-28331:encryptedcolumnsizetoolongforitsdatatypeCause:columnwasencryptedandforVARCHAR2,thelengthspecifiedwas>3932;forCHAR,thelengthspecifiedwas>1932...

IT技术学习 ·2023-07-26

ORA-26085: direct path operation must start its own transaction

文档解释ORA-26085:directpathoperationmuststartitsowntransactionCause:Adirectpathoperationisbeingattemptedwithinatransaction*thathasalreadybeenstarted.Action:Committ...

IT技术学习 ·2023-07-26

ORA-48176: error translating a path name into its full path name

文档解释ORA-48176:errortranslatingapathnameintoitsfullpathnameCause:Anerrorwasencounteredwhentranslatingapathnameintoitsfullpathname.Action:Checktheinputtedpathname...

IT技术学习 ·2023-07-26

ORA-08464: input raw decimal data contains more than 42 digits

文档解释ORA-08464:inputrawdecimaldatacontainsmorethan42digitsCause:TheinputrawbufferpassedtoaUTL_PGRAW_TO_NUMBERconversionroutinecontainedmorethan42digits.Thisexcee...

IT技术学习 ·2023-07-26

ORA-13349: polygon boundary crosses itself

文档解释ORA-13349:polygonboundarycrossesitselfCause:Theboundaryofapolygonintersectsitself.Action:Correctthegeometricdefinitionoftheobject.ORA-13349信息：“polygonbounda...

IT技术学习 ·2023-07-26

ORA-38816: edition has a child that inherits objects from the edition

文档解释ORA-38816:editionhasachildthatinheritsobjectsfromtheeditionCause:Thiserroroccurredbecauseanattemptwasmadetodropaneditionthatachildthatinheritsobjectsfromthe...

IT技术学习 ·2023-07-26

ORA-15027: active use of diskgroup “string” precludes its dismount

文档解释ORA-15027:activeuseofdiskgroup“string”precludesitsdismountCause:AnALTERDISKGROUP…DISMOUNTcommandspecifiedadiskgroupwhichhadclientswithopen...

IT技术学习 ·2023-07-25

ORA-16780: a database has exhausted its archived redo log storage quota

文档解释ORA-16780:adatabasehasexhausteditsarchivedredologstoragequotaCause:Adatabasehasexhausteditsquotaforstoringarchivedredologs.Action:ChecktheDataGuardbrokerlog...

IT技术学习 ·2023-07-23

ORA-41103: Only the designated Cluster Director: string can undesignate itself.

文档解释ORA-41103:OnlythedesignatedClusterDirector:stringcanundesignateitself.Cause:AnattemptwasmadetoundesignatethecurrentClusterDirectorbyadatabasethatisnottheClu...

IT技术学习 ·2023-07-23

ORA-29655: USING clause is incompatible with its supertype

文档解释ORA-29655:USINGclauseisincompatiblewithitssupertypeCause:TheUSINGclauseofatypehastobethesameasitssupertypeorcompatiblewithit.Action:MakesuretheUSINGclauseis...

IT技术学习 ·2023-07-23