What is system change number in Oracle?

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Tags

1. #consistent
2. #increments
3. #database
4. #blocks
5. #cache
6. #oracle
7. #going
8. #modified
9. #buffer
10. #writing
11. #every
12. #checkpoint
13. #marks
14. #number
15. #transactions
16. #clock
17. #commit
18. #system
19. #change
20. #dirty
21. #point
22. #always