If you want to learn about security as beginners or professional it’s very nice to add this book to your Library.
I was one of the technical reviewer for this book and the topics and table of contents covered everything you will need as DBA or as someone who wants to learn something.
The Book is available online via publisher website, or via amazon
Thanks
Osama
Published by Osama Mustafa
Osama considered as one of the leaders in Cloud technology, DevOps and database in the Middle-East. I have more than ten years of experience within the industry. moreover, certfied 4x AWS , 4x Azure and 6x OCI, have also obtained database certifications for multiple providers.
In addition to having experience with Oracle database and Oracle products, such as middle-ware, OID, OAM and OIM, I have gained substantial knowledge with different databases.
Currently, I am architecting and implementing Cloud and DevOps. On top of that, I'm providing solutions for companies that allow them to implement the solutions and to follow the best practices.
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Technology Geek 
Valuable information thanks for sharing Oracle DBA Online Training
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