Python?? Oracle ??????? ???? ??? ??????
installCX_ORACLEVIAPIPANDORACLEINSTANTCLIENT, ADDITITOPATH.2.USECX_ORACLE.CONNECT () withUserName, Password, ANDDSNCreatedViamakedSn () oreasyConnectSyntAxtOestAblishConnection.3.executeQueriesusingAcursor
Jul 28, 2025 am 03:44 AM
Oracle?? ???? ??? ??? ???? ??? ??????
DBA ????? ????? ??; 2. CreateUser ??? ???? ???? ???? ??? ?? ??? ??????. 3. ??, ?? ?? ?? ?? ??? ??? ????? ?? ? ?? ??? ?????. 4. ??? ?? CreateProcedure ?? UnlimitedTablespace? ?? ?? ??? ??????. 5. ????? ?? ??? ??? ?? ??? ?????. 6. ??? ???? ??????. ?? ????? ??? ?????? ???? ?? ??? ??? ?? ??? ?? ??? ???? ????? Oracle ??? ?? ? ?? ??? ???????.
Jul 28, 2025 am 03:43 AM
?????? Oracle Apex ????
OracleApex? Oracle ??????? ???? ? ? ?? ?? ?????, ??? ?????? ?? ? ?? ????? ???? ?? ? ? ????. 2. ???? ?? ???? ?? Apex.oracle.com? ???? ?? ????. ??? ??? ??? ?? ? ??? ? ? ????. 3. ? ?? ??????? ??? ? ??? (? : ??)? ???? ???? ?? ? ??? ???? ?????. 4. ApexBuilder? ?????, ??? ????, ?? ?? ?? ?? ?? ?????? ?????. 5. ?? ??, ?? ????, ???, ??, ??, ?? ? ??? ?? ??? ???????. 6. ??? ?? ???? SQL/PLSQL, ?? ??, ?? ?? ?? ? ?? ?? ??? ??????. 7. ??? ??? ???? ?? ????
Jul 28, 2025 am 03:26 AM
Oracle? ???? ???? ???? ??????
auserisanaccounsusedforlogginginandauthentication
Jul 28, 2025 am 02:19 AM
??? ??? ?? ???
runselectinstance_namefromv $ instance; ifyoucanConnectTothedAtabase, asitDirectlyReturnstheoraclesid.2.checktheoracle_sidenvironmentvariableonthedatabaseServaseRberbyRunningecho $ oracle_sidastheoracleUser.3.examineTheListener
Jul 27, 2025 am 02:06 AM
Oracle?? ??? ??? ??????
astoredprocedureinoracleisanamed, reusableblockofpl/sqlcodestoredinthedatabasetoperformspecifictasks.1. theyimproveperformanceBeingCompileDonceNecutedMultipletimes.2
Jul 27, 2025 am 01:43 AM
????? ?? ??? ?? ???
togetTheCurrentDateAndTimeInoracle, usetHesySdateFunction.1.SelectSysDateFromDualReTurnsTheCurrentDateNdateNtheFormatdd-mon -yyyyhhh24 : mi : ss.2.usetrunc (sysdate) togetonlythedatepart, rentingInmidwhurrentday.3.current_datediffersfromsSdateby
Jul 27, 2025 am 01:37 AM
Oracle Database ??? ???? ??? ??????
??*Fromv $ ??; ??????, PL/SQL, ?? ????? ?? ???? Oracle ??????? ?? ?? ??? ?? ? ????. ?? ?? ??? DBA? ?? ????? ???? ??? ??? ?????. 2. SelectbannerFromv $ versionwherebanner -like'oracle%'??; Oracle ??????? ?? ?? ?? ? ?? ? ? ????. 3. Product_component_version??? ????? ? Oracle ?? ??? ??? ?????. 4. SQLPLUS-V ??? ?? ??????? ????? ?? ????? ?? ?? ?? ??? ? ? ??? ?? ??? ???? ?? ? ????.
Jul 26, 2025 am 07:19 AM
Oracle? Listener.ora ??? ??????
thelistener.orafileissentialforconfiging theoraclenetlistenertoacceptandrouteclientconnectionrequests; itdefinesListeningAddressesandports, specifiesDatabaseServicesViasticaticregistration, andSetSlestenerParameterslikeloggingArgingArcing; $ oracl;
Jul 26, 2025 am 05:30 AM
Oracle ????? ?? ?? ?? ???? ??? ??????
tofindDuplicates, usegroupBywithHavingCount (*)> 1toIndifyDuplicateCombinationsOfSpecifiedColumns; 2.todeletEduplicatesshile -KeepingOneCopy, awedELETEWITHASUBQUERYTHITSMIN (rowid) foreachGroupOrUsow_number (partitionByColumn)
Jul 26, 2025 am 03:21 AM
Oracle?? ???? ??? ?? ??? ??????
Oracle ???? ??? ???? ?? ????? ??? ???????. ?? ??? ??? ????. 1. ???_segments ?? dba_segments ?? ???? ???? ??? ?? ??? ??, select ?? ???? ?? ???? ??? ??? ???? MB? ??? ????. 2. segment_type?? ??? ????? ?? ??? ???, ??? ? LOB ????? ??? ? ? ????. 3. ?? ?? ?? ?? (?? ? LOB ??)? ? ?? ??? ???? user_segments, user_indexes ? user_lobs?? ???? ??? ???? ???????. 4. ??? ??? ?? ? ??? ??? ?? ? ? ????.
Jul 26, 2025 am 02:45 AM
??? ??? ???? ?? Oracle Optimizer ??? ??? ??? ??????
OracleOptimizerRequiresAccuratestatisticStatisticStriceGectionExecutionExecutionPlansecutionBecustOutDatedOrIncorRectScanLeadToPoOrQueryPerformance.1. theOptimizerSSSSTATISTICSTOMATETBISKIZE, IndexTectivity ? rowcounts, ?? ?? ??? ???? ??? ?????
Jul 25, 2025 am 01:20 AM
PL/SQL ??? ?? ??? ?? ? ? ???? (??, ??, ??, ??)?
PL/SQL ??? ???? ?? ? ?? ??? ?????. ??, ??, ?? ? ?. 1. Declare? ??, ??, ?? ? ??? ?? ??? ???? ? ???? ??? ???? ?? ??? ?? ??? ??? ??????. 2. Begin? SQL ?, ?? ?? ? ?? ??? ?? ?? ??? ???? ?? ?????. 3. ??? ??? ??? ???? ? ???? ??? ?? ?? ????, ?? ?? (? : NO_DATA_FOUND) ? ?? ?? (WHEROSHESTHEN)? ?????. 4. ??? ??? ?? ???? ? PL/SQL ???
Jul 25, 2025 am 12:57 AM
Oracle Optimizer ? ???? SQL ???? ?? ??? ??? ??????
theoracleOptimizerDeteMinestErminesteMosteMosteFiciteWayexeCutesQlByAnalyzingExecutionPlansBasedOnStaticsandCostestimation.1.ITDECIDESHOWOACCESSDATA (indexusage, tableJoinOrder ? JoinMethods.2.ItestimatesCostusingTableAndsyStystemStatistics ? Proped
Jul 25, 2025 am 12:47 AM
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