在Vue3中，可以通过readonly函数将一个对象转化为只读的，使其属性成为只读的，无法被修改。使用方法如下：import{readonly}from'vue';constmyObject={name:'Alice',age:25};constreadonlyObject=readonly(myObject);//尝...

文档解释ORA-29510:name,string.string,alreadyusedbyanexistingobjectCause:ACREATEJAVAcommandattemptedtocreateasource,class,orresourceobjectwithanamethatisalreadyinuse...

文档解释ORA-55339:avirtualmodelalreadyexistsforthespecifiedmodel-rulebasecombinationCause:Avirtualmodelwithidenticalcomponentswasalreadypresent.Action:Chooseadiffer...

文档解释ORA-25197:anoverflowsegmentalreadyexistsfortheindexed-organizedtableCause:AnattemptwasmadetoADDOVERFLOWsegmentonanindex-organizedtablethatalreadyhasanoverfl...

文档解释ORA-32409:materializedviewlogon“string”.”string”alreadyexcludesnewvaluesCause:Thematerializedviewlogontheindicatedtablealreadyexclud...

文档解释ORA-49429:FilealreadyexistsandOVERWRITEoptionnotspecified[string]Cause:Theclientattemptedtocreateafilethatalreadyexists.Action:EitherremovethefileorusetheOV...

文档解释ORA-47000:FactorTypestringalreadydefinedCause:TheobjectwiththisnameexistsalreadyAction:ChooseauniqueobjectnameandretrytheoperationORA-47000是一个通用错误，称为“因素类型st...

文档解释ORA-32162:Read/WriteSQLmethodnotregisteredCause:readSQL/writeSQLmethodwasNULLorwasnotregisteredAction:RegisterreadSQL/writeSQLbycallingputmethodinMapORA-321...

文档解释ORA-25146:EXTENTMANAGEMENToptionalreadyspecifiedCause:InCREATETABLESPACE,theEXTENTMANAGEMENToptionwasspecifiedmorethanonce.Action:RemoveallbutoneoftheEXTENT...

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

文档解释ORA-16443:couldnotswitchoutoflogstringthreadstringCause:ALTERSYSTEMFLUSHREDOTOSTANDBYcouldnotswitchoutofthecurrentlog.Action:Thiscanhappenifthereareoneormor...

文档解释ORA-19955:onlyoneopenthreadisallowedtochangetheDBIDCause:Theoperationfailedbecausetherewereactivethreadsinthedatabase.Themostlikelycauseisthatthedatabasecra...

文档解释ORA-19674:filestringisalreadybeingbackedupwithproxycopyCause:Recoverymanagerattemptedtobackupthespecifiedfilewithproxycopy,butthefileisalreadybeingbackedupb...

文档解释ORA-16433:Thedatabasemustbeopenedinread/writemode.Cause:Anattemptwasmadetoopenthedatabaseinread-onlymodeafteranoperationthatrequiresthatthedatabasebeopenedi...

文档解释ORA-19587:erroroccurredreadingstringbytesatblocknumberstringCause:Anerroroccurredwhilereadingfromafile.Action:Oneormoreothermessagesshouldbedisplayedtohelpp...