#MV

MVC和MVVM有什么区别?

「MVC」M-Model:模型,是应用程序中用于处理应用程序数据逻辑的部分,通常模型对象负责在数据库中存取数据V-View:视图,是应用程序中处理数据显示的部分,通常视图是依据模型数据创建的。C-Controller:控制器,是应用程序中处理用户交互的部分,通常控制器负责从视图读取数据,控制用户输入,并向模型发送数据。...
开发笔记 ·2024-10-10

ORA-42031: interim table cannot have a commit SCN-based MV log defined on it

文档解释ORA-42031:interimtablecannothaveacommitSCN-basedMVlogdefinedonitCause:AnattemptwasmadetouseaninterimtablewhichhadacommitSCN-basedmaterialzedviewlogdefinedon...

ORA-32342: The EXPLAIN_MVIEW facility failed to explain the materialized view statement

文档解释ORA-32342:TheEXPLAIN_MVIEWfacilityfailedtoexplainthematerializedviewstatementCause:Anerrorexistsinthematerializedviewdefinition.Asaresult,thematerializedvie...

ORA-32309: object mview type “string”.”string” does not match the master table type

文档解释ORA-32309:objectmviewtype“string”.”string”doesnotmatchthemastertabletypeCause:Anattemptwasmadetocreateanobjectmaterializedviewwhoset...

ORA-12046: cannot use trusted constraints for refreshing remote MV

文档解释ORA-12046:cannotusetrustedconstraintsforrefreshingremoteMVCause:REFRESHUSINGTRUSTEDCONSTRAINTSspecifiedinALTERMATERIALIZEDVIEWorCREATEMATERIALIZEDVIEWofarem...

ORA-32341: The EXPLAIN_MVIEW facility failed to explain the materialized view “string”.”string”

文档解释ORA-32341:TheEXPLAIN_MVIEWfacilityfailedtoexplainthematerializedview“string”.”string”Cause:Thedependentobject(s)ofthematerializedvie...

ORA-30378: MV_CAPABILITIES_TABLE is not compatible with Oracle version

文档解释ORA-30378:MV_CAPABILITIES_TABLEisnotcompatiblewithOracleversionCause:OneormorecolumndefinitionsintheMV_CAPABILITIES_TABLEiseithermissingorincompatiblewithth...

ORA-23363: mismatch of mview base table “string” at master and mview site

文档解释ORA-23363:mismatchofmviewbasetable“string”atmasterandmviewsiteCause:Thenameofthebasetableofthematerializedviewatthemastersiteisdifferentfromtheb...

ORA-23328: mview base table “string”.”string” differs from master table “string”.”string”

文档解释ORA-23328:mviewbasetable“string”.”string”differsfrommastertable“string”.”string”Cause:Whencreatingamateriali...

ORA-30377: table string.MV_CAPABILITIES_TABLE not found

文档解释ORA-30377:tablestring.MV_CAPABILITIES_TABLEnotfoundCause:YouhaveusedtheDBMS_MVIEW.EXPLAIN_MVIEW()APIbeforeyouhavedefinedtheMV_CAPABILITIES_TABLE.Action:Invo...

ORA-12068: updatable mview log for mview “string”.”string” does not exist

文档解释ORA-12068:updatablemviewlogformview“string”.”string”doesnotexistCause:Theupdatablematerializedviewwasmissingtheupdatablematerialized...

ORA-32334: cannot create prebuilt materialized view on a table already referenced by a MV

文档解释ORA-32334:cannotcreateprebuiltmaterializedviewonatablealreadyreferencedbyaMVCause:thetableonwhichthematerializedviewiscreatedasprebuiltisalreadyreferencedby...

ORA-32303: mviews with user-defined types cannot reference multiple master sites

文档解释ORA-32303:mviewswithuser-definedtypescannotreferencemultiplemastersitesCause:Formaterializedviewswithuser-definedtypes,thedefinitionquerycannotreferencetabl...

ORA-30450: refresh_after_errors was TRUE; The following MVs could not be refreshed: string

文档解释ORA-30450:refresh_after_errorswasTRUE;ThefollowingMVscouldnotberefreshed:stringCause:Oneormoreerrorsoccurredduringarefreshofmultiplesummaries.Action:Thenumb...

ORA-42030: cannot online redefine table “string”.”string” with commit SCN-based MV log

文档解释ORA-42030:cannotonlineredefinetable“string”.”string”withcommitSCN-basedMVlogCause:AnattemptwasmadetoredefineatablewhichhadacommitSCN...
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