#Class

ORA-41682: invalid rule class package

文档解释ORA-41682:invalidruleclasspackageCause:Anattemptwasmadetousearuleclasspackagewithinvalidsignatureorpermissions.Action:Droptheruleclassandrecreateit.ORA-4168...

ORA-41613: invalid action preference for rule class: string

文档解释ORA-41613:invalidactionpreferenceforruleclass:stringCause:Anattemptwasmadetouseaninvalidactionpreference.Action:Correcttheinputandtryagain.ORA-41613表示规则类型有误...

ORA-44821: Number of classifiers is too large

文档解释ORA-44821:NumberofclassifiersistoolargeCause:Averylargenumber(>1024)ofclassifierswererequested.Action:Submitasmaller(ORA-44821错误指示您尝试使用的分类器数量过多。该错误可以出现在使...

ORA-29509: incorrectly formed Java binary class definition

文档解释ORA-29509:incorrectlyformedJavabinaryclassdefinitionCause:AnattemptwasmadetocreateaJavaclassusingdataexpectedtobeinbinary(Java.class)format.Thedatawasfoundn...

ORA-44806: Extra classifiers are present in list

文档解释ORA-44806:ExtraclassifiersarepresentinlistCause:Moreclassifierswerepresentinthelistthanspecified.Action:Onlyincludethenumberofclassifierslessthanorequaltonu...

ORA-41608: rule class does not exist

文档解释ORA-41608:ruleclassdoesnotexistCause:Anattemptwasmadetoaccessaruleclassthatdoesnotexistorisnotaccessible.Action:Correcttheruleclassnameandtryagain.ORA-41608...
IT技术学习 ·2023-07-08

ORA-41675: schema for data tables does not match that of the rule class

文档解释ORA-41675:schemafordatatablesdoesnotmatchthatoftheruleclassCause:Anattemptwasmadetousethedmleventspolicyforaruleclassthatreferstotableresidingindifferentsch...

ORA-29661: Unable to find the superclass of the defined in the EXTERNAL NAME

文档解释ORA-29661:UnabletofindthesuperclassofthedefinedintheEXTERNALNAMECause:Theclassisnotloadedinthedatabase.Action:MakesurethesuperclassoftheEXTERNALNAMEisloaded...
IT技术学习 ·2023-07-08

ORA-41721: invalid use of DMLEVENTS and CNFEVENTS in rule class properties

文档解释ORA-41721:invaliduseofDMLEVENTSandCNFEVENTSinruleclasspropertiesCause:AnattemptwasmadetospecifyboththeDMLEVENTSandCNFEVENTSforthesameruleclass.Action:Remove...

ORA-41667: rule class results view name already used for an existing object

文档解释ORA-41667:ruleclassresultsviewnamealreadyusedforanexistingobjectCause:Anattemptwasmadetouseaduplicatenamefortheruleclassresultsview.Action:Useadifferentname...

List<Class> 如何用多态?

假如:B 是基类,D 是派生类。我们知道可以这么用:Bb=newD();但如果是List<B> 怎么用呢?List<B>bs=newList<D>();??这是错误的。正确如下:List<B>bs=newList<B>();bs....
代码星球 ·2023-04-16

Python classmethod()

通常要调用一个类的方法,我们需要首先创建该类的一个实例或对象。但是类方法绑定到类,而不是它的对象,所以类方法函数的创建返回给定函数的类方法**classmethod(function)**#wherefunctionisannameoffunctionclassmethod()函数只接受一个参数参数描述必需/可选函数要...
php学习 ·2023-04-09

Python issubclass()

如果函数的第一个参数是第二个参数的子类,则isinstance()函数返回true。实际上,我们可以说这个函数是用来检查给定的类是否是另一个类的子类。**issubclass(class,classinfo)**#whereclassspecifytheclassname字节()参数:取2个参数。我们还可以传递一个类元...
php学习 ·2023-04-09

python3 操作excel 报错 AttributeError:module ‘win32com.gen_py.’ has no attribute CLSIDToClassMap

电脑python3使用pywin32操作excel文件就报错。报错信息如下:Traceback(mostrecentcalllast):File"F:Pythonlibsite-packagesxlwings\_xlwindows.py",line288,in__init__File"F:Pythonlibsite-p...

issubclass/type/isinstance、函数和方法、反射、callable、特殊成员补充

一、issubclass/type/isinstance(***)  1、issubclass(参数1,参数2):检查第一个参数是否是第二个参数的子子孙孙类,如下示例:classBase(object):passclassFoo(Base):passclassBar(Foo):passprint(issubclass(...
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