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Which three things does oracle-edbms-server-11gR2-preinstall RPM package do to simplify the installation of Oracle Database on Oracle Linux 6 systems?
Correct Answer: A,C,D
Explanation/Reference: Explanation: In order to install the Oracle Database 11g R2 on Oracle Linux 6, your system needs to meet a few prerequisites, as outlined in the Linux Installation Guides. Using the Oracle RDBMS Server 11gR2 Pre- install RPM, you can complete most of the pre-installation configuration tasks. The package: * (A) Causes the download and installation of various software packages and specific versions needed for database installation, with package dependencies resolved via yum * (C) Creates the user oracle and the groups oinstall and dba, which are the defaults used during database installation * (D) Modifies kernel parameters in /etc/sysctl.conf to change settings for shared memory, semaphores, the maximum number of file descriptors, and so on * (D) Sets hard and soft shell resource limits in /etc/security/limits.conf, such as the number of open files, the number of processes, and stack size to the minimum required based on the Oracle Database 11g Release 2 Server installation requirements * Sets numa=off in the kernel boot parameters for x86_64 machines