#PB

ORA-41712: missing groupby specification for the collection “string”

文档解释ORA-41712:missinggroupbyspecificationforthecollection“string”Cause:Anattemptwasmadetouseacollectionelementwithnogroupbyspecificationintherulecon...

ORA-41688: invalid value for the “groupby” attribute

文档解释ORA-41688:invalidvalueforthe“groupby”attributeCause:Aninvalidvaluewasspecifiedforthe“groupby”attribute.Action:Correcttheinputandtrya...

ORA-12855: cannot run parallel or insert direct load in a loopback

文档解释ORA-12855:cannotrunparallelorinsertdirectloadinaloopbackCause:Aloopbackwascreatedinthetransactionbeforethisoperation.Action:Donotuseloopbackwhenusingpdmlori...

ORA-12856: cannot run parallel query on a loopback connection

文档解释ORA-12856:cannotrunparallelqueryonaloopbackconnectionCause:Atableorindexinaparallelqueryisreferencedviaaloopbackconnection.Action:Donotuseloopbackconnection...

ORA-41687: attribute “string” not allowed in the “groupby” specification

文档解释ORA-41687:attribute“string”notallowedinthe“groupby”specificationCause:Theattributeslistedinthe“groupby”specificationinar...

ORA-27196: skgfpbk: sbtpcbackup returned error

文档解释ORA-27196:skgfpbk:sbtpcbackupreturnederrorCause:sbtpcbackupreturnedanerror.Thishappenswhenaproxybackupisbegun.Action:Thiserrorisreturnedfromthemediamanageme...

ORA-02725: osnpbr: cannot send break signal

文档解释ORA-02725:osnpbr:cannotsendbreaksignalCause:ThePipedrivercouldnotsendabreakmessagetotheORACLEshadowprocess.Action:Killsystemcallfailed.Checkerrnoandcontactc...

ORA-09777: osnpbr: cannot send break message

文档解释ORA-09777:osnpbr:cannotsendbreakmessageCause:ThepipedrivercouldnotsendabreakmessagetotheORACLEshadowprocessbreakthread.Action:Internalerror.Contactyourcusto...

ORA-02724: osnpbr: cannot send break message to orapop

文档解释ORA-02724:osnpbr:cannotsendbreakmessagetoorapopCause:ThePipedrivercouldnotsendabreakmessagetoorapop.Action:Contactyourcustomersupportrepresentative.ORA-0272...

MySQL Error number: 3871; Symbol: ER_CLONE_LOOPBACK; SQLSTATE: HY000

文档解释Errornumber:3871;Symbol:ER_CLONE_LOOPBACK;SQLSTATE:HY000Message:Clonecannotuseloopbackconnectionwhilecloningintocurrentdatadirectory.左右错误说明ER_CLONE_LOOPBACK...

C# Linq GroupBy 使用 new 能按值比较进行分组吗?

C#中:list.GroupBy(m => new { m.Id, m.Name });如上,分组使用了new,也就是创建了对象,而我们知道对象是按地址比较的,是不是这种分组就起不到分组作用了?不是,照样能按Id和Name分组。new不会影响分组,仅仅是...

C# Linq 去重-GroupBy、Select 巧对类去重

C#Linq去重-Select、Distinct对唯一性的认定C#Linq去重-GroupBy、Select巧对类去重假设我们从数据库表中读取了值,存在类中,由于不断地读取、添加,可能造成重复,我们的规则是Id重复,则重复,如何利用Linq快速去重呢?看代码public class C{public...

注意:Clipboard 不能设置零长度字符串

Clipboard.SetText("");如上会报错,说:值不能为null。...

PB 级数据处理挑战,Kubernetes如何助力基因分析?

/摘要: 一家大型基因测序功能公司每日会产生10TB到100TB的下机数据,大数据生信分析平台需要达到PB级别的数据处理能力。这背后是生物科技和计算机科技的双向支撑:测序应用从科研逐步走向临床应用,计算模式从离线向在线演进,交付效率越来越重要。作者李鹏,原文首发于InfoQ,《容器混合云,Kubernetes...

阿里PB级Kubernetes日志平台建设实践

/摘要: 将在QCon上分享的《阿里PB级Kubernetes日志平台建设实践》整理出来,分享给大家。阿里PB级Kubernetes日志平台建设实践QCon是由InfoQ主办的综合性技术盛会,每年在伦敦、北京、纽约、圣保罗、上海、旧金山召开。有幸参加这次QCon10周年大会,作为分享嘉宾在刘宇老师的运维专场发...
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