Install PostgreSQL 13 using yum Repository on Linux.Add Targets Manually on EM Cloud Control 13c.Rolling Upgrade With an Existing Physical Standby Database.Upgrade Oracle Database Manually from 12.2.0.1 to 19c.Upgrade Oracle Database from 12.2.0.1 to 19c using DBUA.
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How to Recover Loss of DATA – (Without a Backup!).
How to change SQL prompt to show connected user and database name.Deinstall Oracle 11gR2 Database binaries.Install Oracle Software in silent mode 11gR2.