How to install Oracle in Linux and related knowledge points-Series 2

Preparations before installation:

1. Download the oracle Installation Package

Http://www.oracle.com/technetwork/database/enterprise-edition/downloads/index.html

It must be noted that the current official website only provides installation files after Oracle 11g R2. If you need the previous version, you can use MOS to submit the SR to provide a download link for Oracle.

2. Deploy the installation package

The download of 11g R2 for x86_64 contains two packages:

Linux. x64_11gR2_database_1of2

Linux. x64_11gr2_database204 F2

You can use:

Unzip linux. x64_11gR2_database_1of2

Unzip linux. x64_11gr2_database204 F2

After decompression, you can obtain a/database path, which can be moved to/u01/home.

3. Check System memory space

11g R2 requires at least 1g ram. 2g or more is recommended.

You can run the grep MemTotal/proc/meminfo command to view the memory size of the current system.

You can run the grep Swap/proc/meminfo command to view the swap space of the current system.

Recommended swap space allocation in the official documentation:

RAM Swap space

1 GB to 2 GB 1.5 times RAM

2 GB-16 GB is the same as RAM

Larger than 16 GB 16 GB

IOS chip access speed is low (compared with RAM) and can be rewritten because it can rewrite information and upgrade is now rarely used.

ROM and RAM memory two types of ROM indicate read-only memory: only read information can be written into information. computer power off. The information in the computer is still saved. Use the storage system software, font library, and other RAM to indicate read/write to any storage unit of the memory for read or write operations. computer power off the information in the memory. reload is required to save and reboot. Generally, it is used to store various operating software, input and output data of the operating system, and to exchange information with external storage. We often say that memory mainly refers to RAM.