Ping主题的文章列表，还有Ping的技术要点_第1页

Ping命令的原理

ING的实现过程很简单，命令将引发IP层发送一个简单的IP包，而目的方收到这个包之后，将源和目的地址做一下交换，重新发出这个包即可，当然还要加一些超时的机制。　　假定主机A的IP地址是192.168.1.1，主机B的IP地址是192.168.1.2，都在同一子网内，则当你在主机A上运行“Ping...

开发笔记 ·2024-08-03

关闭 WordPress 的 Pingback 功能

首先，在后台管理页面关闭Pingback功能，这样之后写文章时就不会自动加上Pingback了。然后，在数据库中执行以下SQL语句，将之前文章的Pingback设为关闭。UPDATEwp_postsSETping_status="closed";最后，在functions.php中添加如下代码。(此...

开发笔记 ·2024-07-04

ORA-32052: failed to start mapping service

文档解释ORA-32052:failedtostartmappingserviceCause:Themappingservicefailedtostartproperly.Action:CheckFMONtracefilesforerrors.ORA-32052表明应用程序无法启动映射服务。它是一个致命错误，必须修复才...

IT技术学习 ·2023-07-28

ORA-16112: log mining and apply stopping

文档解释ORA-16112:logminingandapplystoppingCause:ThislogicalstandbyprocessiscleaningupandstoppingLogicalStandbyapply.Action:Noactionnecessary,thisinformationalstate...

IT技术学习 ·2023-07-27

ORA-06580: Hash Join ran out of memory while keeping large rows in memory

文档解释ORA-06580:HashJoinranoutofmemorywhilekeepinglargerowsinmemoryCause:HashJoinreserves3slots(eachslotsize=DB_BLOCK_SIZE*HASH_JOIN_MULTIBLOCK_IO_COUNT)forarow.I...

IT技术学习 ·2023-07-26

ORA-27139: unable to reserve Oracle VM mapping in process address space

文档解释ORA-27139:unabletoreserveOracleVMmappinginprocessaddressspaceCause:Theaddressspaceregionwasalreadymapped.Action:ContactOracleSupportServices.官方解释常见案例一般处理方法及...

IT技术学习 ·2023-07-26

ORA-28670: mapping table cannot be dropped due to an existing bitmap index

文档解释ORA-28670:mappingtablecannotbedroppedduetoanexistingbitmapindexCause:UserattemptedtodropthemappingtablewithNOMAPPINGoptionwhentheIOThasoneormorebitmapindexe...

IT技术学习 ·2023-07-26

ORA-53250: Mapping document does not exist.

文档解释ORA-53250:Mappingdocumentdoesnotexist.Cause:Thespecifiedmappingdocumentdidnotexist.Action:Checktheinstalledmappingdocuments,andcorrectthestatementtopassthen...

IT技术学习 ·2023-07-26

ORA-29378: invalid consumer group mapping priorities

文档解释ORA-29378:invalidconsumergroupmappingprioritiesCause:Themappingprioritieswerenotuniqueintegerswithinthevalidrange.Action:Setthemappingprioritiestouniqueinte...

IT技术学习 ·2023-07-26

ORA-24941: invalid combination of notification grouping attributes

文档解释ORA-24941:invalidcombinationofnotificationgroupingattributesCause:Aninvalidcombinationofnotificationgroupingattributeswasspecified.Currently,onlyTIMEnotific...

IT技术学习 ·2023-07-26

ORA-64130: XMLIndex: invalid namespace mapping “string”

文档解释ORA-64130:XMLIndex:invalidnamespacemapping“string”Cause:Namespacemappingwasinvalid.ThesyntaxisXMLNS=”string”.Action:Checkthenamespac...

IT技术学习 ·2023-07-26

ORA-06521: PL/SQL: Error mapping function

文档解释ORA-06521:PL/SQL:ErrormappingfunctionCause:AnerrorwasdetectedbyPL/SQLtryingtomapthementionedfunctiondynamically.Action:Checkthestackederror(ifany)formoredet...

IT技术学习 ·2023-07-26

ORA-39013: Remapping the SYSTEM schema is not supported.

文档解释ORA-39013:RemappingtheSYSTEMschemaisnotsupported.Cause:Aremap_schematransformwiththeSYSTEMschemawasspecified.Action:Retrytheimportcommandwithoutremappingthe...

IT技术学习 ·2023-07-26

ORA-42000: invalid online redefinition column mapping for table “string”.”string”

文档解释ORA-42000:invalidonlineredefinitioncolumnmappingfortable“string”.”string”Cause:Anattemptwasmadetochangethelogicalstructureofamateria...

IT技术学习 ·2023-07-26

ORA-46252: Cannot complete the operation, overlapping job already exists

文档解释ORA-46252:Cannotcompletetheoperation,overlappingjobalreadyexistsCause:Cleanupjobalreadyexistedwhichspannedthegivenaudittrailtype.Action:Droptheexistingjob.O...

IT技术学习 ·2023-07-26