dd主题的文章列表，还有dd的技术要点_第1页

DDoS攻击的定义是什么

DDoS攻击，全称为分布式拒绝服务攻击（DistributedDenialofServiceattack），是一种常见的网络安全攻击方式。具体来说，DDoS攻击是指攻击者通过控制大量计算机、物联网终端或网络僵尸（Zombie）来向目标网站或服务器发送大量请求，从而耗尽其资源，导致正常用户无法访问服务。这种攻击方式以其见...

开发笔记 ·2024-08-29

com.alibaba.druid.pool.DruidDataSource : create connection SQLException, url: jdbc:mysql:/解决方法详解

com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException:Couldnotcreateconnectiontodatabaseserver.具体错误信息如下：2021-01-0420:20:09.071ERROR12300---[eate-...

开发笔记 ·2024-07-11

ORA-47362: error adding Rule string to Rule Set string, string

文档解释ORA-47362:erroraddingRulestringtoRuleSetstring,stringCause:AnunexpectederroroccurredaddingtheruletotherulesetAction:Pleasereviewthedefinitionforaccuracyandr...

IT技术学习 ·2023-07-28

ORA-29964: missing ADD or DROP keyword

文档解释ORA-29964:missingADDorDROPkeywordCause:OneofthekeywordsADDorDROPisexpected.Action:SpecifytheADDorDROPkeywordorchecktheSQLstatement.ORA-29964:missingADDorDRO...

IT技术学习 ·2023-07-28

ORA-60007: adding (string) blocks to index string.string subpartition string with MAXSIZE (string)

文档解释ORA-60007:adding(string)blockstoindexstring.stringsubpartitionstringwithMAXSIZE(string)Cause:ExtendinganindexsubpartitionviolatedMAXSIZElimit.Action:Increas...

IT技术学习 ·2023-07-28

ORA-29953: cannot issue DDL on a domain index partition marked as FAILED

文档解释ORA-29953:cannotissueDDLonadomainindexpartitionmarkedasFAILEDCause:TriedtoissueaDROP/ALTERonadomainindexpartitioninaFAILEDstate.Action:doALTERINDEXREBUILDPA...

IT技术学习 ·2023-07-28

ORA-38447: Type required for the embedded ADT attribute “string” is missing

文档解释ORA-38447:TyperequiredfortheembeddedADTattribute“string”ismissingCause:ObjecttyperequiredfortheembeddedADTwasmissing.Action:SetserveroutputONfor...

IT技术学习 ·2023-07-28

ORA-53211: unable to read invalid ORDDicom object

文档解释ORA-53211:unabletoreadinvalidORDDicomobjectCause:ThevalueofthesourceattributeortheextensionattributeoftheORDDicomobjectwasnull.Action:SeetheOracleMultimedia...

IT技术学习 ·2023-07-28

ORA-31629: unable to allocate additional memory

文档解释ORA-31629:unabletoallocateadditionalmemoryCause:Adynamicmemoryallocationfailureoccurred.Action:Reportthisproblemtoadatabaseadministrator.ORA-31629:无法分配额外内存官...

IT技术学习 ·2023-07-28

ORA-14640: add/coalesce index partition operation is valid only for hash partitioned global indexes

文档解释ORA-14640:add/coalesceindexpartitionoperationisvalidonlyforhashpartitionedglobalindexesCause:Userattemptedtoaddorcoalesceanindexpartitionofaglobalindexnotpa...

IT技术学习 ·2023-07-28

ORA-25252: listen failed, the address string is a non-persistent queue

文档解释ORA-25252:listenfailed,theaddressstringisanon-persistentqueueCause:Anon-persistentqueuewasspecifiedasanaddressforanagentintheLISTENcall.Action:Specifyanorma...

IT技术学习 ·2023-07-28

ORA-14703: The AFTER clause can be used to ADD PARTITION only to a System Partitioned table.

文档解释ORA-14703:TheAFTERclausecanbeusedtoADDPARTITIONonlytoaSystemPartitionedtable.Cause:ThetableisnotpartitionedbytheSystemmethodAction:SkiptheAFTERclause.ORA-14...

IT技术学习 ·2023-07-27

ORA-15490: not all instances could add/drop the volume

文档解释ORA-15490:notallinstancescouldadd/dropthevolumeCause:TheASMvolumecannotbeadded/droppedonallinstances.Action:Seethealertlogforthereasonthevolumecouldnotbeadd...

IT技术学习 ·2023-07-27

ORA-28143: Invalid argument passed to FGA ADD_POLICY procedure

文档解释ORA-28143:InvalidargumentpassedtoFGAADD_POLICYprocedureCause:InvalidinputargumentwasspecifiedforFGAADD_POLICYprocedure.Action:Specifycorrecttypeandnumberofa...

IT技术学习 ·2023-07-26

ORA-06817: TLI Driver: could not read the Novell network address

文档解释ORA-06817:TLIDriver:couldnotreadtheNovellnetworkaddressCause:Thefile$ORACLE_HOME/spx/addresscouldnotbeopenedforreadingandwriting.Action:MakesureORACLE_HOMEi...

IT技术学习 ·2023-07-26