virtual主题的文章列表，还有virtual的技术要点_第1页

ORA-55339: a virtual model already exists for the specified model-rulebase combination

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

IT技术学习 ·2023-07-28

ORA-26016: Virtual column string in table string.string cannot be loaded by direct path

文档解释ORA-26016:Virtualcolumnstringintablestring.stringcannotbeloadedbydirectpathCause:Youattemptedtoloadanvirtualcolumnusingthedirectpath.Action:Virtualcolumnsca...

IT技术学习 ·2023-07-28

ORA-30984: The XMLType column has to be declared as virtual

文档解释ORA-30984:TheXMLTypecolumnhastobedeclaredasvirtualCause:TheXMLTypecolumnwasnotdeclaredasvirtualwhencreatingastructuredXMLIndex.Action:TheXMLTypecolumnhastob...

IT技术学习 ·2023-07-28

ORA-55332: virtual model cannot be used in this context

文档解释ORA-55332:virtualmodelcannotbeusedinthiscontextCause:Avirtualmodelwasusedasinputinsteadofamodel.Action:Useamodelasinput.ORA-55332是Oracle数据库中用于指示语法错误的一条错误消息代...

IT技术学习 ·2023-07-27

ORA-55441: insufficient privileges to drop virtual model string

文档解释ORA-55441:insufficientprivilegestodropvirtualmodelstringCause:Anattemptwasmadetodropavirtualmodelwithouttheappropriateprivileges.Action:Askthedatabaseadmini...

IT技术学习 ·2023-07-26

ORA-39321: Cannot alter functional index or virtual expression column: string

文档解释ORA-39321:Cannotalterfunctionalindexorvirtualexpressioncolumn:stringCause:Alteredcolumnwasreferencedinavirtualcolumnorfunctionalindexexpression.ThereisnoSQL...

IT技术学习 ·2023-07-26

ORA-54005: keyword VIRTUAL cannot be specified here

文档解释ORA-54005:keywordVIRTUALcannotbespecifiedhereCause:ThekeywordVIRTUALwaseitherrepeatedorincorrectlyspecified.Action:Removethekeywordfromthespecifiedsyntax.OR...

IT技术学习 ·2023-07-26

ORA-54028: cannot change the HIDDEN/VISIBLE property of a virtual column

文档解释ORA-54028:cannotchangetheHIDDEN/VISIBLEpropertyofavirtualcolumnCause:AttemptedtochangetheHIDDEN/VIRTUALpropertyofavirtualcolumnAction:re-issuetheDDLwithoutt...

IT技术学习 ·2023-07-23

ORA-54030: datatype mismatch between virtual column and expression

文档解释ORA-54030:datatypemismatchbetweenvirtualcolumnandexpressionCause:virtualcolumnexpressionwaschangedaftercolumnwascreated”Action:changetheunderlyingexpr...

IT技术学习 ·2023-07-23

ORA-54018: A virtual column exists for this expression

文档解释ORA-54018:AvirtualcolumnexistsforthisexpressionCause:Specifiedindexexpressionmatchesanexistingvirtualcolumn”Action:Re-issuethestatmentbyreplacingthein...

IT技术学习 ·2023-07-22

ORA-55442: a virtual model cannot be used with other models in a SEM_MATCH query

文档解释ORA-55442:avirtualmodelcannotbeusedwithothermodelsinaSEM_MATCHqueryCause:ThesetofmodelsusedasinputtoaSEM_MATCHquerycontainedavirtualmodel.Action:Createanewv...

IT技术学习 ·2023-07-19

ORA-55480: model participating in a virtual model may not be VPD-enabled

文档解释ORA-55480:modelparticipatinginavirtualmodelmaynotbeVPD-enabledCause:AnattemptwasmadetoVPD-enableamodelthatparticipatedinavirtualmodel.Action:None。ORA-55480错...

IT技术学习 ·2023-07-19

ORA-54000: Virtual column feature not yet implemented

文档解释ORA-54000:VirtualcolumnfeaturenotyetimplementedCause:Featurehasnotbeenimplemented.Action:Featureisbeingimplemented.ORA-54000是Oracle数据库所报出的一条错误信息，它指出了一种尚未实现的...

IT技术学习 ·2023-07-19

ORA-55473: RDF model participating in a virtual model may not be version-enabled

文档解释ORA-55473:RDFmodelparticipatinginavirtualmodelmaynotbeversion-enabledCause:Anattemptwasmadetoversion-enableaResourceDefinitionFramework(RDF)modelwhichpartic...

IT技术学习 ·2023-07-19

ORA-54003: specified data type is not supported for a virtual column

文档解释ORA-54003:specifieddatatypeisnotsupportedforavirtualcolumnCause:Onlyscalardatatypesaresupportedforvirtualcolumns.LONG,BLOB,REF,andBFILEdatatypesarenotsuppor...

IT技术学习 ·2023-07-19