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ORA-06953: Not enough virtual memory

文档解释ORA-06953:NotenoughvirtualmemoryCause:Notenoughmemoryavailable.Action:CheckVMSprocessquotasand/orsysgenparametersORA-06953错误是Oracle数据库在系统没有足够的虚拟内存时报出的错误。官方解...

MySQL Error number: MY-013347; Symbol: ER_LDAP_MAPPING_PROCESS_DELIMITER_EQUAL_NOT_FOUND; SQLSTATE: HY000

文档解释Errornumber:MY-013347;Symbol:ER_LDAP_MAPPING_PROCESS_DELIMITER_EQUAL_NOT_FOUND;SQLSTATE:HY000Message:Processingdelimiter,separator=notfound,resettingpositio...

MySQL Error number: MY-011622; Symbol: ER_GRP_RPL_UNABLE_TO_EVALUATE_APPLIER_STATUS; SQLSTATE: HY000

文档解释Errornumber:MY-011622;Symbol:ER_GRP_RPL_UNABLE_TO_EVALUATE_APPLIER_STATUS;SQLSTATE:HY000Message:Unabletoevaluatethegroupreplicationapplierexecutionstatus.Gr...

MySQL Error number: 4164; Symbol: ER_SP_NO_ALTER_LANGUAGE; SQLSTATE: HY000

文档解释Errornumber:4164;Symbol:ER_SP_NO_ALTER_LANGUAGE;SQLSTATE:HY000Message:Alteringthelanguageofanexistingroutineisnotpossible.错误说明:ER_SP_NO_ALTER_LANGUAGE错误,其代码...
IT技术学习 ·2023-06-27

MySQL Error number: MY-011205; Symbol: ER_AUDIT_LOG_WRITER_RENAME_FILE_FAILED_REMOVE_FILE_MANUALLY; SQLSTATE: HY000

文档解释Errornumber:MY-011205;Symbol:ER_AUDIT_LOG_WRITER_RENAME_FILE_FAILED_REMOVE_FILE_MANUALLY;SQLSTATE:HY000Message:Couldnotrenamefilefrom‘%s’to̵...

MySQL Error number: 3175; Symbol: ER_CANNOT_CREATE_VIRTUAL_INDEX_CONSTRAINT; SQLSTATE: HY000

文档解释Errornumber:3175;Symbol:ER_CANNOT_CREATE_VIRTUAL_INDEX_CONSTRAINT;SQLSTATE:HY000Message:Cannotcreateindexonvirtualcolumnwhosebasecolumnhasforeignconstraint....
IT技术学习 ·2023-06-20

MySQL Error number: 3103; Symbol: ER_UNSUPPORTED_ALTER_INPLACE_ON_VIRTUAL_COLUMN; SQLSTATE: HY000

文档解释Errornumber:3103;Symbol:ER_UNSUPPORTED_ALTER_INPLACE_ON_VIRTUAL_COLUMN;SQLSTATE:HY000Message:INPLACEADDorDROPofvirtualcolumnscannotbecombinedwithotherALTERT...
IT技术学习 ·2023-06-19

MySQL Error number: MY-011078; Symbol: ER_DROP_DATABASE_FAILED_RMDIR_MANUALLY; SQLSTATE: HY000

文档解释Errornumber:MY-011078;Symbol:ER_DROP_DATABASE_FAILED_RMDIR_MANUALLY;SQLSTATE:HY000Message:Problemwhiledroppingdatabase.Can’tremovedatabasedirectory(%s...

MySQL Error number: 3733; Symbol: ER_FK_CANNOT_USE_VIRTUAL_COLUMN; SQLSTATE: HY000

文档解释Errornumber:3733;Symbol:ER_FK_CANNOT_USE_VIRTUAL_COLUMN;SQLSTATE:HY000Message:Foreignkey‘%s’usesvirtualcolumn‘%s’whichisnotsupported...
IT技术学习 ·2023-06-17

MySQL Error number: 3178; Symbol: ER_UNSUPPORTED_ALTER_ONLINE_ON_VIRTUAL_COLUMN; SQLSTATE: HY000

文档解释Errornumber:3178;Symbol:ER_UNSUPPORTED_ALTER_ONLINE_ON_VIRTUAL_COLUMN;SQLSTATE:HY000Message:ADDCOLUMNcol…VIRTUAL,ADDINDEX(col)错误说明:ER_UNSUPPORTED_ALTE...
IT技术学习 ·2023-06-17

MySQL Error number: 3174; Symbol: ER_CANNOT_ADD_FOREIGN_BASE_COL_VIRTUAL; SQLSTATE: HY000

文档解释Errornumber:3174;Symbol:ER_CANNOT_ADD_FOREIGN_BASE_COL_VIRTUAL;SQLSTATE:HY000Message:Cannotaddforeignkeyonthebasecolumnofindexedvirtualcolumn.错误说明MySQL错误317...
IT技术学习 ·2023-06-17

Visual Studio如何管理NuGet程序包

 NuGet作为VS的扩展程序,已经做好了UI,我们可以通过ManageNuGetPackages 的对话框。这里我们主要说说如何通过控制台进行包管理。使用命令行的方式,其实也是有其好处,对于比较熟悉linux系统的同学就深有体会,命令行操作,灵活度很大,操作更加编辑等等。NuGet的控制台使用的是...

Visual Studio 2022 不支持 .NET Framework 4.5 项目解决办法

如下图提示开始以为是未安装4.5版本,下载安装好后依然打不开,在网络各种搜索下发现,原来2默认VisualStudio2022不再支持安装.NETFramework4.5组件,安装界面根本没有4.5版本的选项,如下图所示。解决方案解决方法是需要单独在nuget单独下载然后替换原来的4.5版本,步骤如下1、下载nuget...

new、virtual、override、abstract 等-隐藏与覆盖实际操作

new、virtual、override、abstract等-重载new、virtual、override、abstract等-隐藏new、virtual、override、abstract等-覆盖(改写、重写)new、virtual、override、abstract等-抽象new、virtual、override、...

C# 类、多态、继承之 virtual、new 可用于属性、字段、静态吗?

C# 类中,virtual 可以用于属性,但不能用于字段、静态。protectedvirtualstringP1{get;set;}//可protectedvirtualstaticstringP2{get;set;}//不可protectedvirtualstringF1="F1";//不可pro...
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