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【数据源】连接Oracle失败 Listener refused the connection with the following error: ORA-12505

连接Oracle失败Listenerrefusedtheconnectionwiththefollowingerror:ORA-12505使用场景解决方案使用场景数据源平台配置了Oracle,在其它工具测试能够正常连接,但数据源平台在确认配置无误情况下点击测试连接提示失败,报错信息提示:Listenerrefusedtheconnectionwiththefollowingerror:ORA-12505,TNS:listenerdoesnotcurrentlyknowofSIDgiveninconnectdescriptor解决方案原因是Oracle有两种连接类型,1.使用服务名配置方式:jd

【git】git报错:git checkout xxx error: The following untracked working tree files would be overwritten b

git报错:gitcheckoutxxxerror:Thefollowinguntrackedworkingtreefileswouldbeoverwrittenbycheckout:README.mdPleasemoveorremovethembeforeyouswitchbranches.Aborting这个错误是因为在切换分支时,有一个未跟踪的文件(README.md)会被覆盖。解决方法有两种:移动或删除未跟踪的文件:你可以将README.md文件移动到其他位置或者直接删除它。然后再次尝试切换分支。使用强制切换:如果你确定不需要保留README.md文件的内容,可以使用强制切换命令来覆盖

iphone - 为什么此代码会导致 "EXC_BAD_INSTRUCTION"?

dispatch_semaphore_taSemaphore=dispatch_semaphore_create(1);dispatch_semaphore_wait(aSemaphore,DISPATCH_TIME_FOREVER);dispatch_release(aSemaphore);当程序运行到dispatch_release(aSemaphore)时,会导致“EXC_BAD_INSTRUCTION”,然后崩溃。为什么? 最佳答案 我试过这段代码,它确实死于非法指令。所以我做了一些挖掘,发现它在_dispatch_sema

iphone - 为什么此代码会导致 "EXC_BAD_INSTRUCTION"?

dispatch_semaphore_taSemaphore=dispatch_semaphore_create(1);dispatch_semaphore_wait(aSemaphore,DISPATCH_TIME_FOREVER);dispatch_release(aSemaphore);当程序运行到dispatch_release(aSemaphore)时,会导致“EXC_BAD_INSTRUCTION”,然后崩溃。为什么? 最佳答案 我试过这段代码,它确实死于非法指令。所以我做了一些挖掘,发现它在_dispatch_sema

Flutter升级报错: Your local changes to the following files would be overwritten

升级FlutterSDK和包My-Mac:~admin$flutterupgradeUpgradingFlutterfrom/Users/admin/Desktop/SDK/flutter...error:Yourlocalchangestothefollowingfileswouldbeoverwrittenbymerge:packages/flutter/lib/src/services/message_codecs.dartPleasecommityourchangesorstashthembeforeyoumerge.AbortingUpdating2eeeXXXe9..7XX

Flutter升级报错: Your local changes to the following files would be overwritten

升级FlutterSDK和包My-Mac:~admin$flutterupgradeUpgradingFlutterfrom/Users/admin/Desktop/SDK/flutter...error:Yourlocalchangestothefollowingfileswouldbeoverwrittenbymerge:packages/flutter/lib/src/services/message_codecs.dartPleasecommityourchangesorstashthembeforeyoumerge.AbortingUpdating2eeeXXXe9..7XX

.net - Following Redis Config 条目有什么用

我没有使用以下Redis配置条目。key="RedisPoolSize"value="5"key="RedisPoolTimeoutSeconds"value="1" 最佳答案 我想这与ServiceStack.Redis有关,即使它没有指定。由于ServiceStack.Redis不提供任何自定义配置部分,如果没有一小段代码,它什么也做不了。此外,ServiceStack.Redis提供了一个PooledRedisClientManager,一个利用redis客户端连接池的管理器。这是典型的连接池模式,例如Sql连接。连接池就像维

.net - Following Redis Config 条目有什么用

我没有使用以下Redis配置条目。key="RedisPoolSize"value="5"key="RedisPoolTimeoutSeconds"value="1" 最佳答案 我想这与ServiceStack.Redis有关,即使它没有指定。由于ServiceStack.Redis不提供任何自定义配置部分,如果没有一小段代码,它什么也做不了。此外,ServiceStack.Redis提供了一个PooledRedisClientManager,一个利用redis客户端连接池的管理器。这是典型的连接池模式,例如Sql连接。连接池就像维

报错:The following signatures couldn‘t be verified because the public key is not available: NO_PUBKEY

aptupdate最后报错$sudoaptupdate报错......91packagescanbeupgraded.Run'aptlist--upgradable'toseethem.W:Anerroroccurredduringthesignatureverification.Therepositoryisnotupdatedandthepreviousindexfileswillbeused.GPGerror:http://repo.mysql.com/apt/ubuntufocalInRelease:Thefollowingsignaturescouldn'tbeverifiedbec

报错:The following signatures couldn‘t be verified because the public key is not available: NO_PUBKEY

aptupdate最后报错$sudoaptupdate报错......91packagescanbeupgraded.Run'aptlist--upgradable'toseethem.W:Anerroroccurredduringthesignatureverification.Therepositoryisnotupdatedandthepreviousindexfileswillbeused.GPGerror:http://repo.mysql.com/apt/ubuntufocalInRelease:Thefollowingsignaturescouldn'tbeverifiedbec