Good day all,
In my case I cannot make database as readonly, and I should migrate 12c to 23c.
How can I copy all of my data from production 12c db to oracle database 23c?
I found this instruction:
https://www.oracle.com/hk/a/ocom/docs/upgrade-migrate-tech-brief.pdf but I didn't know which way I should use.
I hope you can give me some suggestion, thanks guys