#Man

Web Performance Optimization

WebPerformanceOptimization 技术不断演进,包括: - LazyLoading:延迟加载非必要的资源,提升页面加载速度。- CodeSplitting:将代码拆分成更小的部分,按需加载。- HTTP/3:新一代HTTP协议,提升了网络传输性能和安...
开发笔记 ·2024-08-31

Postman使用技巧——请求参数上传文件

使用postman的时候,如果请求的参数需要从本地上传文件,可以使用下面的方式一、按照通常的使用方法,选择请求方式(post/get),添加请求地址二、按照下方图片,第一步选择body;第二步选择“form-data”;第三步选择key的类型为“File”;第四步添加请求...

城域网(MAN)与公网的区别

什么是城域网(MAN)城域网(MetropolitanAreaNetwork)是一种网络覆盖范围介于局域网(LAN)和广域网(WAN)之间的网络,它通常覆盖一个城市或大型校园的区域,其设计目的是为了满足这一区域内高速数据传输的需求,城域网可以由多个局域网通过高速连接组成,为这些局域网中的用户提供更高效的数据交换和资源共...
开发笔记 ·2024-06-21

com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Data source rejected establishment of connection, message from server: Too many connections

最简单的办法是因为你的my.ini中设定的并发连接数太少或者系统繁忙导致连接数被占满解决方式:打开MySQL安装目录打开MY.INI找到max_connections默认是100.--实例WINDOWS解决mysql Errno.:1040错误XXXXinfo:CannotconnecttoMySQLserv...

ORA-48502: Invalid Command Line – Missing Required Elements

文档解释ORA-48502:InvalidCommandLine–MissingRequiredElementsCause:Missingrequiredcommandlinearguments.Action:Reviewthehelpmessageandsupplytherequiredarguments...

ORA-47346: Rule set string is used by one or more command rules.

文档解释ORA-47346:Rulesetstringisusedbyoneormorecommandrules.Cause:Thespecifiedrulesetwasusedbyexistingcommandrule(s).Action:Removethedependentcommandrulesandretryt...
IT技术学习 ·2023-07-28

ORA-48192: OS command to move a file failed

文档解释ORA-48192:OScommandtomoveafilefailedCause:TheOScommandtomoveafilefailed.Action:Checktheerrornumberassociatedwiththemovefile.ORA-48192:OScommandtomoveafilefa...
IT技术学习 ·2023-07-28

ORA-28151: more than one user name specified for command

文档解释ORA-28151:morethanoneusernamespecifiedforcommandCause:MorethanoneusernamewasspecifiedforanALTERUSERcommand.Action:Trythecommandagainwithonlyoneusername.ORA-...
IT技术学习 ·2023-07-28

ORA-29543: Java command string not yet implemented

文档解释ORA-29543:JavacommandstringnotyetimplementedCause:AnattemptwasmadetouseaJavacommandthatisnotyetimplemented.Action:Donotusethecommand.ORA-29543是Oracle数据库中的错误...

ORA-38724: Invalid option to the FLASHBACK DATABASE command.

文档解释ORA-38724:InvalidoptiontotheFLASHBACKDATABASEcommand.Cause:AninvalidoptionwasspecifiedtotheFLASHBACKDATABASEcommand.Validoptionsare:SCNorTIMESTAMP.Action:Co...

ORA-25146: EXTENT MANAGEMENT option already specified

文档解释ORA-25146:EXTENTMANAGEMENToptionalreadyspecifiedCause:InCREATETABLESPACE,theEXTENTMANAGEMENToptionwasspecifiedmorethanonce.Action:RemoveallbutoneoftheEXTENT...

ORA-30678: too many open connections

文档解释ORA-30678:toomanyopenconnectionsCause:Anattempttoopenaconnectionfailedbecausetoomanyarealreadyopenbythissession.Thenumberofallowedconnectionsvariesassomemay...

ORA-29279: SMTP permanent error: string

文档解释ORA-29279:SMTPpermanenterror:stringCause:ASMTPpermanenterroroccurred.Action:CorrecttheerrorandretrytheSMTPoperation.ORA-29279:SMTP永久错误指的是发送邮件时发生的永久错误,即出现了一些...

ORA-48407: DESCRIBE and QUERY commands need at least relation name argument

文档解释ORA-48407:DESCRIBEandQUERYcommandsneedatleastrelationnameargumentCause:ThisisnorelationnameisinputasargumentAction:Needuserstoinputatleasttherelationname这是一...

ORA-25140: string space policy cannot be specified for the string extent management

文档解释ORA-25140:stringspacepolicycannotbespecifiedforthestringextentmanagementCause:Aninvalidoptionappears.Action:MakesurethatforLOCALextentmanagementUNIFORMorAUT...
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