perf主题的文章列表，还有perf的技术要点_第1页

Web Performance Optimization

WebPerformanceOptimization 技术不断演进，包括： - LazyLoading:延迟加载非必要的资源，提升页面加载速度。- CodeSplitting:将代码拆分成更小的部分，按需加载。- HTTP/3:新一代HTTP协议，提升了网络传输性能和安...

开发笔记 ·2024-08-31

ORA-32150: Cannot perform operation on a null timestamp

文档解释ORA-32150:CannotperformoperationonanulltimestampCause:Thetimestampinvolvedinthisoperationisnull.Action:Usevalid,non-nulltimestampinstancetoperformthisoperat...

IT技术学习 ·2023-07-28

ORA-32156: Cannot perform operation on stream

文档解释ORA-32156:CannotperformoperationonstreamCause:ThisoperationisnotapplicabletostreamsobtainedfromLOBs.Action:NoneORA-32156:不能对流表执行操作官方解释ORA-32156：当向流表执行操作时，可能...

IT技术学习 ·2023-07-28

ORA-28385: cannot perform a PKI certificate-based migration

文档解释ORA-28385:cannotperformaPKIcertificate-basedmigrationCause:APKIcertificate-basedmigrationtoHSMwasattempted.Action:PerformasymmetricMasterKeymigration.ORA-28...

IT技术学习 ·2023-07-28

ORA-47920: Authorization failed for user string to perform this operation

文档解释ORA-47920:AuthorizationfailedforuserstringtoperformthisoperationCause:TheoperationattemptedisnotallowedforthisuserAction:Pleaseensureyouhaveprivilegestoperf...

IT技术学习 ·2023-07-28

ORA-44827: Number of Performance Classes is too large

文档解释ORA-44827:NumberofPerformanceClassesistoolargeCause:Alargenumber(>=50)ofPerformanceClasseswererequested.Action:Submitasmaller(ORA-44827：表示性能类的数量太多。官方解释OR...

IT技术学习 ·2023-07-28

ORA-53802: cannot perform conformance validation because recursion level exceeds MAX_RECURSION_DEPTH

文档解释ORA-53802:cannotperformconformancevalidationbecauserecursionlevelexceedsMAX_RECURSION_DEPTHCause:WhenevaluatingtherecursiveconstraintontheDICOMobject,thenum...

IT技术学习 ·2023-07-27

ORA-32144: Cannot perform operation on a null interval

文档解释ORA-32144:CannotperformoperationonanullintervalCause:Theintervalinvolvedinthisoperationisnull.Action:Usevalid,non-nullintervalinstancetoperformthisoperation...

IT技术学习 ·2023-07-27

ORA-32114: Cannot perform operation on a null LOB

文档解释ORA-32114:CannotperformoperationonanullLOBCause:TheLOBinstanceonwhichtheoperationwasattemptedwasnull.Action:Useavalid,non-nullLOBinstancetoperformthisoperat...

IT技术学习 ·2023-07-26

ORA-16150: FINISH recovery performed on another, older standby database

文档解释ORA-16150:FINISHrecoveryperformedonanother,olderstandbydatabaseCause:AnarchivelogcontainingaFINISHrecoveryindicatorwasreceivedbyastandbydatabasethathasrecei...

IT技术学习 ·2023-07-26

ORA-26930: User “string” does not have privileges to perform this operation

文档解释ORA-26930:User“string”doesnothaveprivilegestoperformthisoperationCause:Anattemptwasmadetocreate,alter,ordropaprocessthathasadifferentuser(suchas...

IT技术学习 ·2023-07-26

ORA-30037: Cannot perform parallel DML after a prior DML on the object

文档解释ORA-30037:CannotperformparallelDMLafterapriorDMLontheobjectCause:AttempttoperformparallelDMLafteranotherDMLonthesameobjectinthesametransaction.Action:Usebit...

IT技术学习 ·2023-07-26

ORA-22906: cannot perform DML on expression or on nested table view column

文档解释ORA-22906:cannotperformDMLonexpressionoronnestedtableviewcolumnCause:AttemptedtoperformaDMLonanexpressionoronanestedtableviewcolumnwhereanestedtablecolumnof...

IT技术学习 ·2023-07-26

ORA-16584: operation cannot be performed on a standby database

文档解释ORA-16584:operationcannotbeperformedonastandbydatabaseCause:Thedatabasespecifiedfortheoperationwasastandbydatabase,ortheoperationwasattemptedonastandbydatab...

IT技术学习 ·2023-07-26

ORA-10548: Cannot perform block media recovery on a read-only plugged-in datafile.

文档解释ORA-10548:Cannotperformblockmediarecoveryonaread-onlyplugged-indatafile.Cause:Anattemptwasmadetoperformblockmediarecoveryonaread-onlyplugged-indatafile.Acti...

IT技术学习 ·2023-07-26