lock and lock

Hi all

Hope, all do well.i need your valuable help, what is the difference between the lock and the latch, and when they occur in oracle db?

Thanks in advance.

Thank you and best regards.

https://asktom.Oracle.com/pls/Apex/f?p=100:11:0:P11_QUESTION_ID:10899066672589

http://docs.Oracle.com/CD/E11882_01/server.112/e40540/consist.htm#CNCPT1358

latch

Control of low-level serialization mechanism used to protect data structures shared in the SGA of simultaneous access.

lock

A database mechanism that prevents the destructive interaction between transactions accessing a shared resource such as a table object, line or invisible system for users. The main categories of locks are DML, DDL locks and locks and internal lock locks.

Tags: Database

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