Questions:
Is ASM is mandatory to configure RAC database?
How ASM and Database communication happens?
Can RDBMS and ASM instances run different versions? Can you explain more about it
What is the difference between hot backup & RMAN backup?

#DBAchallenge -1

--- For 4 node RAC database to run and operational then how many ASM Instances are needed?

--- In case if we have multiple RAC databases are running on ASM then how many ASMB background process are needed to support those RAC databases?

--- Can I have higher patch level on RDBMS and lower patch level on ASM?
Example: ASM 19c JAN2021 Patch – RDBSM 19c OCT2021 Patch

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Mallikarjun Ramadurg
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