#DR

loadrunner 场景设计-集合点设置

1 作用通过让多用户在同一时间点上进行并发操作来测试系统的并发处理的能力2 实现通过集合点函数来实现。注意:集合点经常和事务结合起来使用。集合点只能插入到Action部分,vuser_init和vuser_end中不能插入集合点。所以,如果要模拟并发登录,那么必须把登录操作放到Action中3&nb...

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-...

android是如何识别JEPG文件的

判断前面3个字节是什么,如果是FFD8FF开始,就认为它是JEPG图片。注意android不是根据后缀名来判断是什么文件的//SkImageDecoder_libjpeg.cpp(externalskiasrcimages)staticboolis_jpeg(SkStream*stream){//需要匹配的字节stat...

几个好用的Android Studio插件

类似于Sublime或Xcode,此插件在您的编辑器中嵌入了一个代码迷你地图。滚动条也会变得稍大一些。CodeGlance预览了文件的代码模式,让您快速导航到所需的部分。对于程序员来说,嵌套的括号和圆括号可能是一个麻烦,特别是当某些括号丢失时。它们在代码审查中可能会让人真正头疼。此插件为圆括号、方括号和花括号添加了可爱...

ORA-48161: invalid input for ADR instance id

文档解释ORA-48161:invalidinputforADRinstanceidCause:AninvalidinputwaspassedinfortheADRinstanceid.TheADRinstanceidiseitherNULLortoolongofastring.Action:ChecktheADRin...

ORA-44739: Cannot drop the last group.

文档解释ORA-44739:Cannotdropthelastgroup.Cause:Anattemptwasmadetodropthelastgroupintheindex.Action:UsetheDROPINDEXstatementinstead.ORA-44739是Oracle数据库中的一个错误代码。它表明,用...
IT技术学习 ·2023-07-28

ORA-38810: Implementation restriction: cannot drop edition that has a parent and a child

文档解释ORA-38810:Implementationrestriction:cannotdropeditionthathasaparentandachildCause:Thiserroroccurredbecauseanattemptwasmadetodropaneditionthathasaparentandac...

ORA-56609: Usage not supported with DRCP

文档解释ORA-56609:UsagenotsupportedwithDRCPCause:ThisusagewasnotsupportedonaDRCPconnection.Action:Useadedicatedconnectiontoperformthistask.ORA-56609错误是指应用程序不能使用数据库连...

ORA-48121: error with opening the ADR stream file [string] [string]

文档解释ORA-48121:errorwithopeningtheADRstreamfile[string][string]Cause:AnerrorwasencounteredwhenattemptingtoopenanADRstreamfile.Action:Checktherestoftheerrorstackf...

ORA-48494: ADR home is not set, the corresponding operation cannot be done

文档解释ORA-48494:ADRhomeisnotset,thecorrespondingoperationcannotbedoneCause:TheadrhomeisnotsetinthecurrentadrcisessionAction:Settheadrhomeusingtheadrcicommand̶...
IT技术学习 ·2023-07-28

ORA-30746: error occured while trying to drop column “string” in table “string”

文档解释ORA-30746:erroroccuredwhiletryingtodropcolumn“string”intable“string”Cause:TheusertriedtodropasubtypewithVALIDATEoptionwhichtriedtoch...

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-56512: DRCP: Failed to synchronize RAC instances [string]

文档解释ORA-56512:DRCP:FailedtosynchronizeRACinstances[string]Cause:SomeoftheRACinstanceswerenotsynchronized.Action:Performthesameoperationsonallthefailedinstances....

ORA-42297: cannot drop a schema synonym for a schema of a user who is currently connected

文档解释ORA-42297:cannotdropaschemasynonymforaschemaofauserwhoiscurrentlyconnectedCause:Anattemptwasmadetodropaschemasynonymforaschemaofauserwhowasloggedon.Action:M...

ORA-29856: error occurred in the execution of ODCIINDEXDROP routine

文档解释ORA-29856:erroroccurredintheexecutionofODCIINDEXDROProutineCause:FailedtosuccessfullyexecutetheODCIIndexDroproutine.Action:Checktoseeiftheroutinehasbeencode...
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