Dream Always Dream , if you don't work on it : Real-world Oracle DBA troubleshooting guides for RAC, Data Guard, RMAN, performance tuning, upgrades, backups, and cloud migration. Tested in production environments.
We can do Direct Upgrade to Oracle Database 19c
catcon.pl (Catalog Container Script) is an Oracle utility introduced with the Multitenant Architecture (CDB/PDB) to execute SQL scripts ...
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