nav主题的文章列表，还有nav的技术要点_第2页

ORA-15205: requested mirror side unavailable

文档解释ORA-15205:requestedmirrorsideunavailableCause:Therequestedmirrorsideofablockiseitherunallocatedorallocatedonadiskthathasbeendroppedfromthediskgroup.Action:R...

IT技术学习 ·2023-07-08

ORA-12210: TNS:error in finding Navigator data

文档解释ORA-12210:TNS:errorinfindingNavigatordataCause:ApplicationcallingnavigationroutinehasnotproperlyconfiguredtheTNSNAV.ORAfile.Action:CheckthesyntaxoftheTNSNAV...

IT技术学习 ·2023-07-08

ORA-48315: ADR unavailable

文档解释ORA-48315:ADRunavailableCause:theADRdirectoryisnotavailableAction:enableADRandretryoperationORA-48315:ADR尚未启动。官方解释ORA-48315异常表示用户尝试运行一个ADR（自动故障诊断仓库）不支持的操作，但...

IT技术学习 ·2023-07-08

ORA-12207: TNS:unable to perform navigation

文档解释ORA-12207:TNS:unabletoperformnavigationCause:ImproperlyconfigurednavigationfileTNSNAV.ORA.Action:CheckthesyntaxoftheTNSNAV.ORAfileontheapplication`smachine,...

IT技术学习 ·2023-07-08

ORA-27492: unable to run job “string.string”: scheduler unavailable

文档解释ORA-27492:unabletorunjob“string.string”:schedulerunavailableCause:Ajobrunwithcurrentsessionsettofalsecannotbeissuediftheschedulerisnotactive.Che...

IT技术学习 ·2023-07-08

ORA-16016: archived log for thread string sequence# string unavailable

文档解释ORA-16016:archivedlogforthreadstringsequence#stringunavailableCause:Redoapplytimedoutwaitingfortherequestedarchivedlogfile.Action:Verifythattheprimarydataba...

IT技术学习 ·2023-07-08

ORA-12211: TNS:needs PREFERRED_CMANAGERS entry in TNSNAV.ORA

文档解释ORA-12211:TNS:needsPREFERRED_CMANAGERSentryinTNSNAV.ORACause:TNSNAV.ORAdoesnothaveaPREFERRED_CMANAGERSdefined.Action:AddaPREFERRED_CMANAGERSentrytotheTNSNAV...

IT技术学习 ·2023-07-08

ORA-12214: TNS:missing local communities entry in TNSNAV.ORA

文档解释ORA-12214:TNS:missinglocalcommunitiesentryinTNSNAV.ORACause:ThereisnoLOCAL_COMMUNITIESentryinTNSNAV.ORA.Action:DefinetheLOCAL_COMMUNITIESforthisnodeintheTNS...

IT技术学习 ·2023-07-08

ORA-25237: navigation option used out of sequence

文档解释ORA-25237:navigationoptionusedoutofsequenceCause:TheNEXT_MESSAGEorNEXT_TRANSACTIONoptionwasspecifiedafterdequeuingallthemessages.Action:Resetthedequeuingpos...

IT技术学习 ·2023-07-08

MySQL Error number: 3182; Symbol: ER_MASTER_KEY_ROTATION_SE_UNAVAILABLE; SQLSTATE: HY000

文档解释Errornumber:3182;Symbol:ER_MASTER_KEY_ROTATION_SE_UNAVAILABLE;SQLSTATE:HY000Message:Storageengineisnotavailable.错误说明：ER_MASTER_KEY_ROTATION_SE_UNAVAILABLE错误...

IT技术学习 ·2023-07-01

MySQL Error number: MY-010186; Symbol: ER_DEFAULT_SE_UNAVAILABLE; SQLSTATE: HY000

文档解释Errornumber:MY-010186;Symbol:ER_DEFAULT_SE_UNAVAILABLE;SQLSTATE:HY000Message:Default%sstorageengine(%s)isnotavailableErrorMY-010186:ER_DEFAULT_SE_UNAVAILABL...

IT技术学习 ·2023-06-30

MySQL Error number: MY-010254; Symbol: ER_CONN_TCP_IPV6_UNAVAILABLE; SQLSTATE: HY000

文档解释Errornumber:MY-010254;Symbol:ER_CONN_TCP_IPV6_UNAVAILABLE;SQLSTATE:HY000Message:IPv6isnotavailable.错误说明：MY-010254:ER_CONN_TCP_IPV6_UNAVAILABLE（状态码HY000）是MyS...

IT技术学习 ·2023-06-25

MySQL Error number: MY-011093; Symbol: ER_DD_UPGRADE_SCHEMA_UNAVAILABLE; SQLSTATE: HY000

文档解释Errornumber:MY-011093;Symbol:ER_DD_UPGRADE_SCHEMA_UNAVAILABLE;SQLSTATE:HY000Message:Upgradingthedatadictionaryfailed,temporaryschemaname‘%s’nota...

IT技术学习 ·2023-06-20

flutter系列之:Navigator的高级用法

简介在最后一篇文章中，我们讨论了navigator在flutter中的基本用法，我们可以使用它的push和pop方法来跳转Router之间。在flutter中，Router是widget，但在Android中，Router是Activity，在IOS中，Router是Viewcontroler。Router除了之前提到...

开发笔记 ·2023-03-02

503 Service Unavailable的原因及解决方法

当遇到503ServiceUnavailable，表示该网站服务器不可用。这可能是因为它太忙或正在维护中。与其他类似的http状态码不同，503表示您的网站已在线且正在运行，但目前无法访问。1.服务器维护就像您的汽车一样，服务器需要例行维护，以保持运行平稳。它可能正在进行常规更新或升级，以提高用户体验；还可能是进行重要...

开发笔记 ·2023-01-09