#IS

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...

Credis和Phpredis的区别:适合多PHP环境的Redis客户端

实现方式Credis是纯PHP实现的Redis客户端,使用PHP的socket函数进行通信,不需要依赖任何扩展。由于是纯PHP实现,所以在性能上不如phpredis。phpredis则是使用C语言编写的Redis客户端扩展,使用了Redis的CAPI,因此在性能上比Credis更高。同时,phpredis支持Redis...

java中arraylist命名空间是什么

Java中没有命名空间的概念,ArrayList是java.util包中的一个类。Java中没有命名空间的概念,但是可以使用包名来进行区分。例如,如果你想使用ArrayList类,可以通过导入java.util包来实现:```importjava.util.ArrayList;```然后就可以在代码中直接使用Array...

升级Redisson版本兼容问题

升级版本:从3.10.6升级到3.18.0报错:java.io.IOException:Unsupportedprotocolversion252java.io.IOException:Unsupportedprotocolversion252atorg.jboss.marshalling.river.RiverUnm...

ChatGPT Signup is currently unavailable错误提示解决方法

问题介绍:1、账号注册阶段出现的提示:Signupiscurrentlyunavailable,pleasetryagainlater2、翻译过来错误原因是:注册当前不可用,请稍后再试,是一个比较常见的报错内容; 解决方法:使用QQ邮箱注册。1、出现这一问题最大的原因是因为邮箱导致的;2、网易以及163邮箱都...

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 IT技术学习·2023-07-28

ORA-55605: Incorrect Flashback Archive is specified

文档解释ORA-55605:IncorrectFlashbackArchiveisspecifiedCause:AnattemptwasmadetooperateonaFlashbackArchivethatdoesnotexist,ortocreateaFlashbackArchivethatalreadyexist...

ORA-64143: Can only share an existing XMLIndex table with an XMLTYPE column.

文档解释ORA-64143:CanonlyshareanexistingXMLIndextablewithanXMLTYPEcolumn.Cause:AnattemptwasmadetoshareatablewithoutanXMLTYPEcolumn.Action:DropthegroupcontainingtheX...
IT技术学习 IT技术学习·2023-07-28

ORA-39034: Table string does not exist.

文档解释ORA-39034:Tablestringdoesnotexist.Cause:TheuserreferencedatableinanAPIthatdidnotexist.Action:CorrecttablenameandretryAPI.ORA-39034:Tablestringdoesnotexist.这...

ORA-32039: recursive WITH clause must have column alias list

文档解释ORA-32039:recursiveWITHclausemusthavecolumnaliaslistCause:AWITHclausequeryreferredtoitself(recursive)butdidnothaveacolumnaliaslistspecifiedforit.Action:Adda...

ORA-54660: CLIP_TIN: invalid Point Cloud; extent is empty

文档解释ORA-54660:CLIP_TIN:invalidPointCloud;extentisemptyCause:TheinputTINfortheCLIP_TINoperationwasinvalid.Action:SpecifyaTINthatwascreatedusingtheCREATE_TINopera...

ORA-39754: FULL PARTITIONED OUTER JOIN is not supported

文档解释ORA-39754:FULLPARTITIONEDOUTERJOINisnotsupportedCause:AnattemptwasmadetouseFULLPARTITIONEDOUTERJOIN.Action:SpecifyFULLPARTITIONEDOUTERJOINthroughUNIONofLEFT...

ORA-32415: fast refreshable remote materialized view on a detail table with commit SCN-based materialized view log is not supported

文档解释ORA-32415:fastrefreshableremotematerializedviewonadetailtablewithcommitSCN-basedmaterializedviewlogisnotsupportedCause:Thematerializedviewcreationfailedbeca...

ORA-31181: PL/SQL DOM handle accesses node that is no longer available

文档解释ORA-31181:PL/SQLDOMhandleaccessesnodethatisnolongeravailableCause:Thespecifiedpl/sqlhandleisreferencinganodeinaDOMDocumentthatisnolongeravailable.Action:Ens...
IT技术学习 IT技术学习·2023-07-28
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