#rita解说

ORA-48476: Cannot write the results out to a file, please check if the environment variable TMPDIR is set or the current directory is not writable

文档解释ORA-48476:Cannotwritetheresultsouttoafile,pleasecheckiftheenvironmentvariableTMPDIRissetorthecurrentdirectoryisnotwritableCause:Thecurrentpathmaynotbewritab...
IT技术学习 ·2023-07-16

ORA-44412: Invalid ACL: Cyclic ACL inheritance is not allowed

文档解释ORA-44412:InvalidACL:CyclicACLinheritanceisnotallowedCause:AcyclewasformedbyACLinheritance.Action:ChecktheACLinheritanceandbreakthecyclebyremovingsomeACLinh...

ORA-01300: writable database required for specified LogMiner options

文档解释ORA-01300:writabledatabaserequiredforspecifiedLogMineroptionsCause:Optionswerespecifiedwhichrequiredthedatabasetobewritable.Action:Specifydifferentoptionsor...

MySQL Error number: MY-010697; Symbol: ER_NDB_BINLOG_NDB_TABLES_WRITABLE; SQLSTATE: HY000

文档解释Errornumber:MY-010697;Symbol:ER_NDB_BINLOG_NDB_TABLES_WRITABLE;SQLSTATE:HY000Message:NDBBinlog:ndbtableswritable错误说明:MY-010697是一个MySQL错误。它出现时,表示发生了一种情况,其中Nd...

MySQL Error number: MY-010107; Symbol: ER_WRITABLE_CONFIG_REMOVED; SQLSTATE: HY000

文档解释Errornumber:MY-010107;Symbol:ER_WRITABLE_CONFIG_REMOVED;SQLSTATE:HY000Message:World-writableconfigfile‘%s’hasbeenremoved.错误说明MY-010107(ER_WRITAB...

MySQL Error number: MY-010460; Symbol: ER_INIT_DATADIR_EXISTS_AND_NOT_WRITABLE_WONT_INITIALIZE; SQLSTATE: HY000

文档解释Errornumber:MY-010460;Symbol:ER_INIT_DATADIR_EXISTS_AND_NOT_WRITABLE_WONT_INITIALIZE;SQLSTATE:HY000Message:–initializespecifiedbutthedatadirectoryexis...

C# List 作为参数传递的值变化演示解说

[TestMethod]publicvoidTestMethod1(){List<int>list=newList<int>();Test(list);Console.WriteLine(list.Count());//总数量变为1}privatevoidTest(List<int>...

组合优于继承 Composition over inheritance

https://stackoverflow.com/questions/49002/prefer-composition-over-inheritancePrefercompositionoverinheritanceasitismoremalleable/easytomodifylater,butdonotuseac...

JAVA对于程序的运行的一种解说

main方法,正如注释所说,这是程序开始执行的第一行。对于一个Java应用程序来说,main方法是必需的,Java解释器在没有生成任何对象的情况下,以main作为入口来执行程序。每个类中可以定义多个方法,但main方法只能有一个。关键字public表示访问权限,指明所有的类都可以使用这一方法。main必须被定义为pub...

Swagger注解说明

常用注解: - @Api()用于类; 表示标识这个类是swagger的资源 - @ApiOperation()用于方法; 表示一个http请求的操作 - @ApiParam()用于方法,参数,字段说明; 表示对参数的添加元数据(说...
代码星球 ·2021-02-01

hadoop学习第四天-Writable和WritableComparable序列化接口的使用&&MapReduce中传递javaBean的简单例子

1.如果一个javaBean想要作为MapReduce的key或者value,就一定要实现序列化,因为在Map到Reduce阶段的时候,只能是传输二进制数据,不可能将字符流直接进行RPC传输,只要一个javabean实现了序列化和反序列化,就可以做为key或者value最简单的序列化和反序列化就是实现Writable接...

Caused by: org.springframework.beans.NotWritablePropertyException:

一般这种错误是缺少set方法,如:Causedby:org.springframework.beans.NotWritablePropertyException:Invalidproperty'securityMetadataSource'ofbeanclass[com.basic.security.MyFilterS...

sudo: /etc/sudoers is world writable|给用户添加权限报错

给用户添加权限时候出现:sudo:/etc/sudoersisworldwritable|sudo:/etc/sudoersisworldwritable解决方式:pkexecchmod555/etc/sudoers ...
代码星球 ·2020-11-27

Ansible:遇到错误 "sudo: /etc/sudoers is world writable sudo: no valid sudoers sources found, quitting

执行ansible-playbook时,遇到该错误:经过检查发现是因为在Linux中/etc/sudoers该文件必须是只读权限的才行,故我们需要修改其权限为440,到root账户下修改,直接chmod0440/etc/sudoers就可以了。 转自:https://blog.csdn.net/wzh7019...

Hadoop WritableComparable接口

WritableComparable接口Writable接口大家可能都知道,它是一个实现了序列化协议的序列化对象。在Hadoop中定义一个结构化对象都要实现Writable接口,使得该结构化对象可以序列化为字节流,字节流也可以反序列化为结构化对象。那WritableComparable接口是可序列化并且可比较的接口。M...
代码星球 ·2020-10-21
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