Lock and key

Hello

We have heard that there are many types of locks in oracle, this lock, this lock and their nature. But where is the key? In general the life we used to say "lock and key"... Oracle gives lock, but I forgot to give the key? Or keys are in bed with Oracle?

Thank you.

You do not get the point. The word lock in Oracle db does not literally lock, just as, as Hemant gave the example, the window is not windows. I gave a reply to you already, the key (if you are so seized in) is at the end the transaction because locks are acquired and released when the transaction begins and ends. That's about it, there's nothing to put in the view or any where else because that's the idea. And it's not clear to you, I think just because you jump towards things much more complex in part very early the learning curve of your. I don't know why you've started reading CBO Fundamentals when you are always clear concepts?

Around the point that what happens if someone would ask about the types of locks or their account in an X version or there, I think that's not the right question to ask. Most would not have seen all the conflicts of locking and no I guess bothers to remember the County since whenever a need, it can look in the docs (that's what they are intended, refer). I'll echo the same advice as Peter and Mark gave to you, read the Concepts guide without reference to external links with a blanket. Once you understand what it says, go to the Administrator's guide, backup and Recovery Guide, and Performance Tuning guide. Once you'd everything, start to read external references.

Aman...

Tags: Database

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