Somo 1Vigezo vya muundo vilivyo: tofauti za spfile/pfile, kumbukumbu, CPU, mipangilio ya parallelChanganua vigezo vya kuanzisha sasa katika spfile na pfile, rekodi ugawaji wa kumbukumbu na CPU, na pima mipangilio ya parallel na optimizer ili kubainisha marekebisho hatari na mapungufu dhidi ya mazoea yanayopendekezwa ya Oracle 19c.
Locating and backing up spfile and pfileComparing spfile and pfile parameter valuesSGA, PGA, and memory_target configuration reviewCPU_COUNT, parallelism, and resource manager useOptimizer, statistics, and cursor-related parametersSomo 2Ulinganifu wa mzigo wa kazi: OLTP dhidi ya ripoti, madirisha ya kilele, viwango vya shughuli, kazi zinazoendesha muda mrefuTambua sifa za mzigo wa kazi unaoendesha kwenye Oracle 12c kwa kutofautisha mifumo ya OLTP na ripoti, kubainisha madirisha ya kilele, kiasi cha shughuli, na kazi zinazoendesha muda mrefu, ili kutoa taarifa za ukubwa, indexing, na matarajio ya utendaji katika 19c.
Classifying OLTP, batch, and reporting workloadsCapturing AWR and ASH workload baselinesIdentifying peak usage windows and patternsAnalyzing transaction rates and SQL hotspotsReviewing long-running jobs and resource usageSomo 3Mbinu za kuhifadhi na uhifadhi: katalogi za RMAN, skripiti, zana za msaidizi wa tatu, uthibitisho wa kuhifadhiPima mikakati ya kuhifadhi inayolinda Oracle 12c, ikijumuisha katalogi za RMAN, skripiti, na zana za msaidizi wa tatu, na uhakikishe uhifadhi, madirisha ya urejesho, na vipimo vya kurejesha ili kuhakikisha urejesho wa kuaminika wakati na baada ya uhamisho wa 19c.
RMAN catalog configuration and maintenanceBackup schedules, levels, and compression useIntegration with third-party backup solutionsRetention policies and recovery window reviewRegular restore and validation test proceduresSomo 4Muundo wa uhifadhi: ASM, SAN, NFS, maelezo ya mifumo ya faili na sifa za I/OTathmini muundo wa sasa wa uhifadhi wa Oracle 12c, ikijumuisha ASM, SAN, NFS, na mifumo ya faili ya ndani, na pima mifumo ya I/O na latency ili kubaini ikiwa jukwaa linaweza kudumisha mahitaji ya utendaji na upatikanaji wa Oracle 19c.
ASM disk groups, redundancy, and templatesSAN LUN layout, RAID levels, and cachingNFS configuration, mount options, and lockingLocal filesystem choices and block size alignmentI/O throughput, latency, and queue depth metricsSomo 5Mpangilio wa upatikanaji wa juu na DR: Data Guard, RAC, duplication ya RMAN, majukumu ya standbyAndika muundo uliopo wa upatikanaji wa juu na urejesho wa janga, ikijumuisha RAC, Data Guard, na duplication ya RMAN, na tathmini taratibu za failover, hali za ulinzi, na majukumu ya standby kwa uwiano na Oracle 19c.
Current RAC topology and node configurationPrimary and standby Data Guard relationshipsProtection modes, lag, and redo transport checksRMAN duplication and clone creation workflowsFailover, switchover, and DR test proceduresSomo 6Mipangilio ya mfumo wa uendeshaji na kernel inayohusiana na Oracle (maelezo maalum ya Linux/Unix/Windows)Pima jukwaa za OS zinazoandaa Oracle 12c, thibitisha vigezo vya kernel, vifurushi, na chaguo za mifumo ya faili, na linganisha maelezo maalum ya Linux, Unix, na Windows yanayoathiri utendaji, uthabiti, na uwezo wa kusaidia kwa njia ya sasisho ya Oracle 19c.
Supported OS versions and certification checksLinux kernel parameters and hugepages tuningUnix resource limits, semaphores, and IPC settingsWindows services, registry, and memory settingsFilesystem mount options and I/O scheduler choicesSomo 7Msingi wa usalama: watumiaji, majukumu, profile, upatikanaji wa mtandao, usifishaji, sera za ukaguziTathmini hali ya sasa ya usalama wa Oracle 12c kwa kupima watumiaji, majukumu, profile, udhibiti wa upatikanaji wa mtandao, usifishaji, na ukaguzi, kubainisha mapungufu dhidi ya mahitaji ya shirika na sheria kabla ya kuhamia Oracle 19c.
User, role, and privilege model assessmentPassword policies, profiles, and lockout rulesNetwork access controls and SQL*Net hardeningTDE, data-at-rest, and data-in-transit encryptionUnified auditing configuration and log reviewSomo 8Hifadhi ya instansi za hifadhi ya data, matoleo ya Oracle, na viwango vya patchKusanya orodha kamili ya hifadhi za hifadhi za data za Oracle 12c, ikijumuisha majina ya instansi, majukumu, matoleo, viwango vya patch, na chaguo zinazotumika, ili kuweka kipaumbele wagombea wa uhamisho na kuhakikisha kufuata leseni na msaada wa Oracle 19c.
Discovering all Oracle homes and instancesRecording database roles and environmentsDocumenting exact versions and PSU/BP levelsCataloging installed options and feature usagePrioritizing databases for migration wavesSomo 9Uchoraaji wa utegemezi: programu, middleware, wateja wa JDBC/ODBC, kazi zilizopangwa na michakato ya ETLBainisha utegemezi wote wa juu na chini kwenye Oracle 12c, ikijumuisha programu, middleware, dereva za JDBC/ODBC, na kazi zilizopangwa, ili kuepuka kuvunjika wakati wa uhamisho na kupanga shughuli za upimaji na cutover zilizoratibiwa.
Cataloging application schemas and ownersJDBC, ODBC, and Oracle client version reviewMiddleware connection pools and JNDI settingsBatch jobs, ETL tools, and data movement flowsDependency documentation and impact analysisSomo 10Usawa wa mazingira ya majaribio: njia za cloning, sehemu ndogo ya data, masking, kukamata mzigo wa kazi wa uwakilishiTathmini jinsi mazingira ya majaribio yanayofanana na mazalendo kwa kupima njia za cloning, sehemu ndogo za data, mikakati ya masking, na kukamata mzigo wa kazi, kuhakikisha utendaji halisi, uthibitisho wa utendakazi, na upimaji salama wa regression.
Physical and logical cloning options for 12cSubset strategies for large production datasetsData masking and anonymization requirementsCapturing and replaying representative workloadsValidating configuration parity across tiers