Patching!!!
1. What is the difference between opatch apply Vs opatchauto?
2. What is the difference between opatch apply Vs opatch napply?
3. Can we patch standby DB first or primary DB first? Or patch both together? Which best practice?
4. Can we patch GI home first or DB home first? Or patch both together? Which best practice?
5. What happens to standby if we patch Primary and don't patch standby?
6. What is Rolling, Non-Rolling and Hybrid Patching RAC?
7. What is conflict check in patching?
8. What is central Inventory and Local Inventory?
9. How to find locations of central Inventory and Local Inventory?
10. If we loose or deleted these Central and Local Inventory then what is the impact?
11. What is .patch_storage under $ORACLE_HOME? And Why we need this?
12. If we delete this .patch_storage what is the impact on my database?
13. If .patch_stirage got deleted the how to restore the same.
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