Oracle Patching Processes 

Hi Ankush can upload videos on backup ,security control ,recovery, optimization, migration patches with practical examples

Can u upload below topics with the practical examples. As we can not find that on Google so it will so help to us for become DBA. Percona MySQL Cluster Setup. ProxySQL setup. database backup and maintenance. Query optimization. Data migration experience into enterprise work environment. database procedures, such as upgrade, backup, recovery, migration, etc.

What happenes if we delete patch file which is older than 7 months please can you answer

Is it simple to get a job as Oracle dba job?

You have to be all kinds of brave (stupid) to just apply a patch to production without having tested it in lower environments.