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#Map
spring中mapper层是什么意思?
mapper层的作用是对数据库进行数据持久化操作,他的方法语句是直接针对数据库操作的现在用mybatis逆向工程生成的。mapper层,其实就是dao层,主要是做数据持久层的工作,负责与数据库进行联络的一些任务都封装在此。...
开发笔记
·
2024-05-06
spring
mapper
是什么
意思
ORA-39172: Cannot remap transportable tablespace names with compatibility of string.
文档解释ORA-39172:Cannotremaptransportabletablespacenameswithcompatibilityofstring.Cause:Theuserattemptedtoremapatablespacenameinatransportabletablespacejobwhenthec...
IT技术学习
·
2023-07-28
ORA-39172
Cannot
remap
transportable
tablespace
ORA-25110: NOSORT may not be used with a bitmap index
文档解释ORA-25110:NOSORTmaynotbeusedwithabitmapindexCause:AnattemptwasmadetocreateabitmapindexusingtheNOSORToption.Action:RemoveNOSORTfromtheCREATEBITMAPINDEXstatem...
IT技术学习
·
2023-07-28
ORA-25110
NOSORT
may
not
be
ORA-39045: invalid metadata remap name string
文档解释ORA-39045:invalidmetadataremapnamestringCause:AninvalidmetadataremapnamewasspecifiedonaDBMS_DATAPUMP.METADATA_REMAPAPIcall.Action:Correctthemetadataremapnam...
IT技术学习
·
2023-07-28
ORA-39045
invalid
metadata
remap
name
ORA-39234: Data cannot be remapped under the direct path access method.
文档解释ORA-39234:Datacannotberemappedunderthedirectpathaccessmethod.Cause:Dataremappingwasrequestedonajobthatrequiresthedirectpathaccessmethod.Dataremappingcanonly...
IT技术学习
·
2023-07-28
ORA-39234
Data
cannot
be
remapped
ORA-39232: invalid remap function: string
文档解释ORA-39232:invalidremapfunction:stringCause:Thespecifiedpackagefunctionforperformingdataremappingwasnotfound.Action:Eithercreatethespecifiedpackagefunctionor...
IT技术学习
·
2023-07-28
ORA-39232
invalid
remap
function
string
ORA-14300: partitioning key maps to a partition outside maximum permitted number of partitions
文档解释ORA-14300:partitioningkeymapstoapartitionoutsidemaximumpermittednumberofpartitionsCause:Therowinsertedhadapartitioningkeythatmapstoapartitionnumbergreaterth...
IT技术学习
·
2023-07-28
ORA-14300
partitioning
key
maps
to
ORA-47033: Factor link for string and string is referred by one or more identity maps.
文档解释ORA-47033:Factorlinkforstringandstringisreferredbyoneormoreidentitymaps.Cause:Thespecifiedfactorlinkwasreferredbyexistingidentitymaps.Action:Removethedepend...
IT技术学习
·
2023-07-28
string
ORA-47033
Factor
link
for
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-32052
failed
to
start
mapping
ORA-07339: spcre: maximum number of semaphore sets exceeded.
文档解释ORA-07339:spcre:maximumnumberofsemaphoresetsexceeded.Cause:Theinternalbufferisnotbigenoughtoholdthenumberofsemaphoresetidentifiersrequested.Action:Reconfigu...
IT技术学习
·
2023-07-27
ORA-07339
spcre
maximum
number
of
ORA-07253: spdes: semctl error, unable to destroy semaphore set.
文档解释ORA-07253:spdes:semctlerror,unabletodestroysemaphoreset.Cause:Semctlsystemcallreturnedanerror.Action:Checksemaphoresets.Mayrequiremanualcleanup.Checkadditio...
IT技术学习
·
2023-07-27
ORA-07253
spdes
semctl
error
unable
ORA-47045: Identity string for Factor string is used by one or more identity maps.
文档解释ORA-47045:IdentitystringforFactorstringisusedbyoneormoreidentitymaps.Cause:Thespecifiedidentitywasusedbyexitingidentitymap(s).Action:Removethedependentident...
IT技术学习
·
2023-07-26
string
ORA-47045
Identity
for
Factor
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-27139
unable
to
reserve
Oracle
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-28670
mapping
table
cannot
be
ORA-27235: unable to map file region into memory
文档解释ORA-27235:unabletomapfileregionintomemoryCause:Afileregioncouldnotbemappedintomemory.Action:Seeaccompanyingerrors.。ORA-27235错误消息表明,在映射文件到内存时发生了错误。在系统报告此消息时,...
IT技术学习
·
2023-07-26
ORA-27235
unable
to
map
file
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