What is an OLR, and how is it used in the Oracle RAC environment?

As a qualified Oracle RAC administrator, you should know most of the acronyms used in this profession. Acronyms allow you to communicate with other professionals more efficiently. Reviewing these before the interview will help you remember them and keep them fresh in your mind. However, you should never use an acronym in one of your answers unless the interviewer has already used it or you define it before continuing with your answer. One of the key skills you need to demonstrate during the interview is your ability to communicate complex topics to individuals who may not have a technical background. Using acronyms will make this more difficult.

"OLR, which stands for Oracle Local Repository, contains information that allows the cluster processes to be started with the OCR being in the Oracle Automatic Storage System, or ASM. Since the ASM file system is unavailable until the Grid processes are started up, a local copy of the contents of the OCR is required. This local copy is stored in the OLR."