ORA-23633: Cannot turn off combined capture and apply mode in apply-state checkpoint mode (value “string”, string parameter string)
文档解释ORA-23633:Cannotturnoffcombinedcaptureandapplymodeinapply-statecheckpointmode(value“string”,stringparameterstring)Cause:Thecapturewasrunninginap...
ORA-25190: an index-organized table maintenance operation may not be combined with other operations
文档解释ORA-25190:anindex-organizedtablemaintenanceoperationmaynotbecombinedwithotheroperationsCause:ALTERTABLEstatementattemptedtocombineanindex-organizedtablemain...
ORA-26901: string propagation sender in the combined capture and apply mode is to be suspended while apply is disabled.
文档解释ORA-26901:stringpropagationsenderinthecombinedcaptureandapplymodeistobesuspendedwhileapplyisdisabled.Cause:Thecorrespondingsubscriberwasdroppedorsplit.Actio...
ORA-14048: a partition maintenance operation may not be combined with other operations
文档解释ORA-14048:apartitionmaintenanceoperationmaynotbecombinedwithotheroperationsCause:ALTERTABLEorALTERINDEXstatementattemptedtocombineapartitionmaintenanceopera...
ORA-29872: parameters clause cannot be combined with the specified options
文档解释ORA-29872:parametersclausecannotbecombinedwiththespecifiedoptionsCause:TheusercombinedPARAMETERSclausewithotheralterindexoptions.Action:Reissuethestatementw...
ORA-14121: MODIFY DEFAULT ATTRIBUTES may not be combined with other operations
文档解释ORA-14121:MODIFYDEFAULTATTRIBUTESmaynotbecombinedwithotheroperationsCause:ALTERTABLEorALTERINDEXstatementattemptedtocombineMODIFYDEFAULTATTRIBUTESwithsomeot...
C# Path.Combine 并不那么智能
Path.Combine的两个参数，均不允许为null，另外，只要其中一个参数为零长度字符串，就直接返回另一个参数。string s1 = Path.Combine("D:", "cftea.txt"); // D:cf...
MR案例：CombineFileInputFormat
CombineFileInputFormat是一个抽象类。Hadoop提供了两个实现类CombineTextInputFormat和CombineSequenceFileInputFormat。此案例让我明白了三点：详见解读：MR多路径输入和解读：CombineFileInputFormat类对于单一输入路径情况：//...
解读：CombineFileInputFormat类
MR-Job默认的输入格式FileInputFormat为每一个小文件生成一个切片。CombineFileInputFormat通过将多个“小文件”合并为一个"切片"（在形成切片的过程中也考虑同一节点、同一机架的数据本地性），让每一个Mapper任务可以处理更多的数据，从而提高MR任务的执行速度...