python 字典的常用操作
1字典1.1python字典的概述字典是一个无序的，可以修改的，元素呈键值对的形式，以逗号分割的，以大括号包围的序列；字典是python基础数据类型当中唯一一个映射关系的数据类型；由于字典无序，所以我们定义字典和字典生成之后的元素的顺序是不同的；1.2python字典的定义1.定义字典、查看数据和类型直接使用print...
ORA-16534: switchover, failover or convert operation in progress
文档解释ORA-16534:switchover,failoverorconvertoperationinprogressCause:TheDataGuardbrokerreturnedthisstatusbecauseaswitchover,failoverorconvertoperationwasinprogres...
ORA-13911: Threshold not found
文档解释ORA-13911:ThresholdnotfoundCause:Thethresholddidnotexistwiththespecifiedthresholdkey.Action:Noactionrequired.？ORA-13911是一个可用于检测SQL语句的概要性门限错误。它会报告查询或更新操作的性能被...
ORA-14316: table is not partitioned by List method
文档解释ORA-14316:tableisnotpartitionedbyListmethodCause:ALTERTABLEADD|DROPVALUEScanonlybeperformedonListpartitionedobjectsAction:Re-issuethecommandagainstaListpart...
ORA-14616: table is not subpartitioned by List method
文档解释ORA-14616:tableisnotsubpartitionedbyListmethodCause:Asubpartitionmaintenanceoperation,suchasALTERTABLEMODIFYSUBPARTITIONADD|DROPVALUES,wasperformedonanon-Li...
ORA-64138: Cannot drop groups from an XMLIndex whose internal table has been indexed using Oracle Text.
文档解释ORA-64138:CannotdropgroupsfromanXMLIndexwhoseinternaltablehasbeenindexedusingOracleText.Cause:AnattemptwasmadetodropgroupsfromanXMLIndexwhoseinternaltableha...
ORA-25242: cannot change subscriber name from string to string without FIRST_MESSAGE option
文档解释ORA-25242:cannotchangesubscribernamefromstringtostringwithoutFIRST_MESSAGEoptionCause:AnattemptwasmadetochangethesubscribernamewhileusingtheNEXT_MESSAGEorNE...