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#NEC
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...
开发笔记
·
2024-04-29
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException
Data
source
rejected
establishment
ORA-24404: connection pool does not exist
文档解释ORA-24404:connectionpooldoesnotexistCause:Anattemptwasmadetousetheconnectionpoolbeforecreatingit.Action:Createtheconnectionpool.ORA-24404:连接池不存在官方解释ORA-2440...
IT技术学习
·
2023-07-28
ORA-24404
connection
pool
does
not
ORA-24392: no connection pool to associate server handle
文档解释ORA-24392:noconnectionpooltoassociateserverhandleCause:OCIServerAttachcalledinOCI_POOLmodebutnoconnectionpoolfoundtoassociatetheserverhandle.Action:1)Verify...
IT技术学习
·
2023-07-28
ORA-24392
no
connection
pool
to
ORA-30678: too many open connections
文档解释ORA-30678:toomanyopenconnectionsCause:Anattempttoopenaconnectionfailedbecausetoomanyarealreadyopenbythissession.Thenumberofallowedconnectionsvariesassomemay...
IT技术学习
·
2023-07-28
ORA-30678
too
many
open
connections
ORA-28509: unable to establish a connection to non-Oracle system
文档解释ORA-28509:unabletoestablishaconnectiontonon-OraclesystemCause:Initializationofadatabaselinktoanon-OraclesystemfailedtoconnecttotheHeterogeneousServicesagent...
IT技术学习
·
2023-07-28
to
ORA-28509
unable
establish
connection
ORA-42297: cannot drop a schema synonym for a schema of a user who is currently connected
文档解释ORA-42297:cannotdropaschemasynonymforaschemaofauserwhoiscurrentlyconnectedCause:Anattemptwasmadetodropaschemasynonymforaschemaofauserwhowasloggedon.Action:M...
IT技术学习
·
2023-07-28
schema
ORA-42297
cannot
drop
synonym
ORA-24401: cannot open further connections
文档解释ORA-24401:cannotopenfurtherconnectionsCause:Sufficientnumberofconnectionsarenotpresentinthepooltoexecutethecall.NonewconnectionscanbeopenedastheconnMaxparam...
IT技术学习
·
2023-07-28
ORA-24401
cannot
open
further
connections
ORA-24851: failed to connect to shared subsystem
文档解释ORA-24851:failedtoconnecttosharedsubsystemCause:WhileattemptingtoinitializeOCIinsharedmode,aproblemwasencounteredinconnectingtheprocesstothesharedsubsystem....
IT技术学习
·
2023-07-28
to
ORA-24851
failed
connect
shared
ORA-56867: Cannot connect to Master Diskmon on pipe “string”
文档解释ORA-56867:CannotconnecttoMasterDiskmononpipe“string”Cause:MasterDiskmonwasnotrunningorthelisteningpipewasdeleted.Action:Lookatthe$ORA_CRS_HOME/l...
IT技术学习
·
2023-07-28
ORA-56867
Cannot
connect
to
Master
ORA-32591: connect string too long
文档解释ORA-32591:connectstringtoolongCause:Theconnectstringspecifiedforthedatabaselinkwasmorethan2000characters.Action:Specifyaconnectstringlessthan2000chracters.O...
IT技术学习
·
2023-07-28
ORA-32591
connect
string
too
long
ORA-12166: TNS:Client can not connect to HO agent.
文档解释ORA-12166:TNS:ClientcannotconnecttoHOagent.Cause:NVstringcontainedDESCRIPTION/HO.Action:CallHOagentfromintegratingserver.。ORA-12166错误:TNS:客户端无法连接到HO代理官方解释OR...
IT技术学习
·
2023-07-27
ORA-12166
TNS
Client
can
not
ORA-06905: CMX: connect error
文档解释ORA-06905:CMX:connecterrorCause:remotepartnernotlisteningAction:makesureremotenodehasCMXinstalledandrunningmakesureoracmxisrunningonremotehostORA-06905,又称为C...
IT技术学习
·
2023-07-27
ORA-06905
CMX
connect
error
ORA-24400: error occured while creating connections in the pool
文档解释ORA-24400:erroroccuredwhilecreatingconnectionsinthepoolCause:ThedatabaselinkspecifiedinOCIConnectionPoolCreatemightbeaninvalidone.Action:Specifyavaliddataba...
IT技术学习
·
2023-07-27
ORA-24400
error
occured
while
creating
ORA-21522: attempted to use an invalid connection in OCI (object mode only)
文档解释ORA-21522:attemptedtouseaninvalidconnectioninOCI(objectmodeonly)Cause:UserattemptedtouseaninvalidconnectionoraconnectionthathasbeenterminatedinanOCIenvironm...
IT技术学习
·
2023-07-27
ORA-21522
attempted
to
use
an
ORA-06763: TLI Driver: error sending disconnect
文档解释ORA-06763:TLIDriver:errorsendingdisconnectCause:TLIencounteredanerrorsendingadisconnectmessageclosingthecommunicationchannel.Action:Contactyourcustomersuppo...
IT技术学习
·
2023-07-26
ORA-06763
TLI
Driver
error
sending
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