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e.preventDefault()是什么

e.preventDefault()是一个JavaScript函数，它可以阻止浏览器的默认行为。例如，当你点击一个超链接时，浏览器会自动跳转到超链接指向的页面，这就是浏览器的默认行为。如果你希望在点击超链接时不跳转，可以在超链接的事件处理函数中使用e.preventDefault()来阻止浏览器的默认行为。 ...

开发笔记 ·2024-12-12

ORA-15158: rolling upgrade prevented by string

文档解释ORA-15158:rollingupgradepreventedbystringCause:Oneormoreinstanceswereblockingtherollingupgrade.Action:Terminateorwaituntilthereportedoperationiscompletebefo...

IT技术学习 ·2023-07-27

ORA-16196: database has been previously opened and closed

文档解释ORA-16196:databasehasbeenpreviouslyopenedandclosedCause:Theinstancehasalreadyopenedandclosedthedatabase,whichisallowedonlyonceinitslifetime.Action:Shutdownt...

IT技术学习 ·2023-07-26

ORA-16188: LOG_ARCHIVE_CONFIG settings inconsistent with previously started instance

文档解释ORA-16188:LOG_ARCHIVE_CONFIGsettingsinconsistentwithpreviouslystartedinstanceCause:ThesettingsfortheLOG_ARCHIVE_CONFIGparameterareinconsistentwiththesetting...

IT技术学习 ·2023-07-26

ORA-22162: element at index [string] has been previously deleted

文档解释ORA-22162:elementatindex[string]hasbeenpreviouslydeletedCause:Tryingtodeleteanon-existentcollectionelement.Action:Checkfortheexistenceoftheelementpriortocal...

IT技术学习 ·2023-07-23

ORA-14607: Tablespace was not specified for previous subpartitions in template but is specified for string

文档解释ORA-14607:TablespacewasnotspecifiedforprevioussubpartitionsintemplatebutisspecifiedforstringCause:Tablespacesmayeitherbespecifiedforallsubpartitionsormustno...

IT技术学习 ·2023-07-22

ORA-16109: failed to apply log data from previous primary

文档解释ORA-16109:failedtoapplylogdatafrompreviousprimaryCause:Logdatafrompreviousprimarycouldnotbecompletelyapplied.Action:.Then,reissuecommand.OracleORA-16109错误指示...

IT技术学习 ·2023-07-19

ORA-16098: Primary database has been shut down to prevent data loss.

文档解释ORA-16098:Primarydatabasehasbeenshutdowntopreventdataloss.Cause:Theprimarydatabasewasshutdownbecauseitwasoperatinginmaximumprotectionmodeandnosuitablestandb...

IT技术学习 ·2023-07-19

ORA-13918: Updating system alert with reason_id string failed; previous alert not found

文档解释ORA-13918:Updatingsystemalertwithreason_idstringfailed;previousalertnotfoundCause:SystemError:Anattempttoupdateasystemalertfailed.Thealertwasimproperlyclear...

IT技术学习 ·2023-07-19

ORA-14606: Tablespace was specified for previous subpartitions in template but is not specified for string

文档解释ORA-14606:TablespacewasspecifiedforprevioussubpartitionsintemplatebutisnotspecifiedforstringCause:Tablespacesmayeitherbespecifiedforallsubpartitionsormustno...

IT技术学习 ·2023-07-19

ORA-16535: Oracle Restart or Oracle Clusterware prevented completion of broker operation

文档解释ORA-16535:OracleRestartorOracleClusterwarepreventedcompletionofbrokeroperationCause:ThebrokercouldnotcompletetheoperationbecauseOracleRestart(forsingleinsta...

IT技术学习 ·2023-07-18

ORA-15604: Initialization parameters prevent client from being enabled.

文档解释ORA-15604:Initializationparameterspreventclientfrombeingenabled.Cause:Anattemptwasmadetoenableaclientthatwasdisabledforautomaticexecutionbyaninitializationp...

IT技术学习 ·2023-07-16

ORA-14609: Tablespace was not specified for the previous lob segments of column string in template but is specified for string

文档解释ORA-14609:TablespacewasnotspecifiedforthepreviouslobsegmentsofcolumnstringintemplatebutisspecifiedforstringCause:Tablespacesmayeitherbespecifiedforalllobseg...

IT技术学习 ·2023-07-16

ORA-16649: possible failover to another database prevents this database from being opened

文档解释ORA-16649:possiblefailovertoanotherdatabasepreventsthisdatabasefrombeingopenedCause:Anattempttoopentheprimarydatabasewasmadeeitherafterafailoveroccurred,orw...

IT技术学习 ·2023-07-16

ORA-14001: LOCAL clause contradicts previosly specified GLOBAL clause

文档解释ORA-14001:LOCALclausecontradictsprevioslyspecifiedGLOBALclauseCause:CREATEINDEXstatementcontainedaGLOBALclauseandaLOCALclauseAction:SpecifyLOCALorGLOBALclau...

IT技术学习 ·2023-07-16