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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

Lucene分类统计示例

在检索系统中，遇到了分组统计（Grouping/GroupBy）的需求，比如将搜索结果按照栏目分类，统计每个栏目下各有多少条结果。以前的做法很愚蠢，先发起一次search统计出有多少组，然后在每个组里发起一次search；这样在有N组的情况下一共执行了N+1此搜索，效率低下。最近发现Lucene提供了分组的功能，是通过...

开发笔记 ·2024-08-27

阿里云E-MapReduce

阿里云E-MapReduce(EMR)是构建在阿里云云服务器ECS上的开源Hadoop、Spark、HBase、Hive、Flink生态大数据PaaS产品。提供用户在云上使用开源技术建设数据仓库、离线批处理、在线流式处理、即时查询、机器学习等场景下的大数据解决方案。...

开发笔记 ·2024-06-23

ORA-44747: An XMLIndex with a structured component cannot be specified with ASYNC.

文档解释ORA-44747:AnXMLIndexwithastructuredcomponentcannotbespecifiedwithASYNC.Cause:AnattemptwasmadetospecifyASYNCparameterforanXMLIndexwithastructuredcomponent.Ac...

IT技术学习 ·2023-07-28

ORA-48474: Syntax error specifying product, must not be NULL

文档解释ORA-48474:Syntaxerrorspecifyingproduct,mustnotbeNULLCause:Theproductclauseisbeingused,butnoproductnameisprovidedAction:SupplytheproductnameORA-48474是一个表示系统无...

IT技术学习 ·2023-07-28

ORA-64104: Column name already used by internal column of the structured component of the XMLIndex.

文档解释ORA-64104:ColumnnamealreadyusedbyinternalcolumnofthestructuredcomponentoftheXMLIndex.Cause:Anattemptwasmadetouseacolumnnamealreadyinusebyaninternalcolumnoft...

IT技术学习 ·2023-07-28

ORA-16307: TSE key string successfully applied

文档解释ORA-16307:TSEkeystringsuccessfullyappliedCause:AnALTERSYSTEMSETENCRYPTIONKEYstatementwassuccessfullycommittedonthelogicalstandbydatabase.Action:Noactionnece...

IT技术学习 ·2023-07-28

ORA-48160: invalid input for ADR product id

文档解释ORA-48160:invalidinputforADRproductidCause:AninvalidinputwaspassedinfortheADRproductid.TheADRproductidiseitherNULLortoolongofastring.Action:ChecktheADRprodu...

IT技术学习 ·2023-07-27

ORA-41627: event structure object type in inconsistent state

文档解释ORA-41627:eventstructureobjecttypeininconsistentstateCause:Theobjecttypespecifiedfortheeventstructurewasinaninconsistentstate.Action:Fixtheobjecttypeandtrya...

IT技术学习 ·2023-07-26

ORA-48497: “string” is an invalid product type

文档解释ORA-48497:“string”isaninvalidproducttypeCause:TheproducttypeisnotregisteredAction:ChecktheproducttypeORA-48497是Oracle服务器在处理某一错误时会抛出的一个标准错误提示。ORA...

IT技术学习 ·2023-07-26

ORA-16030: session specific change to the LOG_ARCHIVE_MIN_SUCCEED_DEST parameter requires a LOG_ARCHIVE_DEST_n destination

文档解释ORA-16030:sessionspecificchangetotheLOG_ARCHIVE_MIN_SUCCEED_DESTparameterrequiresaLOG_ARCHIVE_DEST_ndestinationCause:Thefollowingeventcausedanincompatibilit...

IT技术学习 ·2023-07-26

ORA-41674: dmlevents policy allowed only for event structures with table aliases

文档解释ORA-41674:dmleventspolicyallowedonlyforeventstructureswithtablealiasesCause:Anattemptwasmadetousethedmleventspolicyforaneventstructurewithnotablealiasconstr...

IT技术学习 ·2023-07-26

ORA-13050: unable to construct spatial object

文档解释ORA-13050:unabletoconstructspatialobjectCause:Thisisaninternalerror.Action:ContactOracleSupportServices.ORA-13050是由Oracle数据库抛出的一个错误，其中表明无法构造出一个空间对象，即无法构造出一个...

IT技术学习 ·2023-07-26

ORA-18122: XUDY0023 – Updating expression introduces a namespace conflict

文档解释ORA-18122:XUDY0023–UpdatingexpressionintroducesanamespaceconflictCause:AnINSERT,REPLACE,orRENAMEexpressionaffectedanelementnodebyintroducinganewnamesp...

IT技术学习 ·2023-07-26

ORA-07416: slpath: pathname construction failed; lack of output buffer space.

文档解释ORA-07416:slpath:pathnameconstructionfailed;lackofoutputbufferspace.Cause:Theslpathroutineisgivenamaximumlengthbuffertoexpandthenameinto.Anoverflowofthisbuf...

IT技术学习 ·2023-07-26