#there

ORA-27607: Smart I/O failed because there were no online disks. tablespace number: “string”, file number: “string”

文档解释ORA-27607:SmartI/Ofailedbecausetherewerenoonlinedisks.tablespacenumber:“string”,filenumber:“string”Cause:Therewerenoonlinedisksfound...

MySQL Error number: MY-010258; Symbol: ER_CONN_UNIX_IS_THERE_ANOTHER_USING_SOCKET; SQLSTATE: HY000

文档解释Errornumber:MY-010258;Symbol:ER_CONN_UNIX_IS_THERE_ANOTHER_USING_SOCKET;SQLSTATE:HY000Message:Doyoualreadyhaveanothermysqldserverrunningonsocket:%s?错误说明:MyS...

MySQL Error number: MY-010257; Symbol: ER_CONN_TCP_IS_THERE_ANOTHER_USING_PORT; SQLSTATE: HY000

文档解释Errornumber:MY-010257;Symbol:ER_CONN_TCP_IS_THERE_ANOTHER_USING_PORT;SQLSTATE:HY000Message:Doyoualreadyhaveanothermysqldserverrunningonport:%d?错误说明MY-010257...

struts2报错:There is no Action mapped for namespace [/] and action name [userAction!add]

使用struts2.3进行动态方法调用时出现:ThereisnoActionmappedfornamespace[/user]andactionname[user!add]associatedwithcontextpath错误,原因是  (1)DMI可能导致安全问题  (2)DM...
代码星球 ·2021-02-15

There is not enough memory to perform the requested operation

/今日在写bug时ide突发脑溢血,崩溃了一、修改用户目录下的.vmoptions找到C:用户用户名.WebStorm2018.1configwebstorm64.exe.vmoptions使用notepad++打开将其改为光改这个还不行,依然会提示二、修改WebStorm安装目录下的.vmoptions还需要修改We...
代码星球 ·2021-02-10

There was a conflict between

解读,首先搜索到第一个5>的开头的那一行,确认是在编译哪一个项目。那么后面的冲突,就是在和这个项目冲突。 Therewasaconflictbetween"log4net,Version=1.2.15.0,Culture=neutral,PublicKeyToken=669e0ddf0bb1aa2a"a...
代码星球 ·2021-02-08

“There's no Qt version assigned to this project for platform ”

1.findmenu"QtVSTools",selectQtOptions 2.addanewQtversion  3.rightclickthetargetproject,andselect"Qtprojectsettings"  4.settheQtVersion&...
代码星球 ·2021-02-08

linq to xml There are multiple root elements.

vartemp2=temp1.Element("staticContent");if(temp2!=null){stringstr="<removefileExtension=".svg"/><mimeMapfileExtension=".svg"mimeType="image/svg+xml"/&g...
代码星球 ·2021-02-08

Why there is two completely different version of Reverse for List and IEnumerable?

https://stackoverflow.com/questions/12390971/why-there-is-two-completely-different-version-of-reverse-for-list-and-ienumerablItisworthnotingthatthelistmethodisa...
代码星球 ·2021-02-08

Springboot+mybatis事务回滚时报错处理。Cannot change the ExecutorType when there is an existing transaction

org.springframework.dao.TransientDataAccessResourceException:CannotchangetheExecutorTypewhenthereisanexistingtransactionatorg.mybatis.spring.SqlSessionUtils.ses...

ERROR: but there is no HDFS_NAMENODE_USER defined. Aborting operation.

执行hadoop的start-all.sh命令式启动报如下的错误[root@iZbp13pwlxqwiu1xxb6szsZhadoop-3.2.1]#start-all.shStartingnamenodeson[iZbp13pwlxqwiu1xxb6szsZ]ERROR:Attemptingtooperateonhd...
代码星球 ·2021-01-30

There is no normal TM

错误关键信息:ThereisnonormalTM只需在配置文件添加如下代码即可(application.properties):tx-lcn.manager.host=0.0.0.0错误原因:与redis没有开放远程连接问题性质一样。参考资料:记录一次Tx_LCN连接失败的问题(ThereisnonormalTM)...
代码星球 ·2020-12-27

Struts2中关于"There is no Action mapped for namespace / and action name"的总结

来源于:http://www.cnblogs.com/gulvzhe/archive/2011/11/21/2256632.html今天在调试一个基础的Struts2框架小程序。总是提示"ThereisnoActionmappedfornamespace/andactionname"的错误。上网查询后发现这是一个初学者...

区块链入门到实战(27)之以太坊(Ethereum) – 智能合约开发

与传统合同相比,智能合约有一些显著优点:不需要中间人费用低代码就是规则区块链网络中有多个备份,不用担心丢失避免人工错误无需信任,就可履行协议匿名履行协议虽然以太坊(Ethereum)是最流行支持智能合约的区块链平台,但它并不是唯一支持智能合约的平台。超级账本(Hyperledger) 是Linux基金会于20...

区块链入门到实战(26)之以太坊(Ethereum) – 挖矿

以太坊(Ethereum)与其他公共区块链一样,使用工作量证明机制确保区块链网络正常运行。矿工进行工作量证明计算,即挖矿,来选择区块,写入区块链,确认交易。交易过程如下图所示:从技术角度来看,以太坊使用的工作量证明算法称为Ethash,这是一种哈希算法,灵感来自Dagger-Hashimoto算法。...
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