Oracle 10G Database hardware and software environment requirements

1. Check Hardware requirements

The system must meet the following minimum hardware requirements:

At least 1024MB of physical memory

The following table describes the configuration relationship between physical memory (RAM) and swap area (swap space) at installation time.

RAM Swap Space

1024 MB to 2048 MB 1.5 times times RAM

2049 MB to 8192 MB equals RAM

is greater than 8192 MB 0.75 times times RAM

At least MB of free disk space in/tmp directory

1.5 GB to 3.5 GB disk space is used to install Oracle database software, depending on the type of installation

1.2GB disk space for database pre-configuration file system storage (optional)

Description

Disk space requirements for using ASM (Automatic Storage Management) and RDS (raw device Storage) are described in the following sections.

If you select an automatic backup configuration, enabling Flash-back (Flash recovery area) requires additional disk space, or can be specified in either the file system or the ASM (Automatic Storage Management) disk group.

Ensure that the system meets these requirements:

Confirm the physical memory size, type the following command:

# grep Memtotal/proc/meminfo

If the physical memory size is less than the recommended memory requirement, you must increase the memory before installing.

Confirm the swap area (swap space) size, type the following command:

# grep Swaptotal/proc/meminfo

Example:

As3$grep Swaptotal/proc/meminfo

swaptotal:2048248 KB

If necessary, consult the operating system documentation for information about how to configure the additional swap area (swap space) to modify the swap area (swap space) configuration.

Confirm the available RAM and swap areas (swap space), type the following commands:

# free

Example:

As3$free

Total used free shared buffers Cached

mem:503084 490356 12728 0 2432 345224

-/+ buffers/cache:142700 360384

swap:2048248 72692 1975556

It is best to repeat the test multiple times after a few seconds of delay.

Description

The above command produces several different results. This is because the available RAM and swap areas (swap space) outside the freeze period change with the user's operation.

Confirm the disk space available in the/tmp directory, type the following command:

# DF-H/tmp

Example:

AS3$DF-H/tmp

File system capacity used available% mount point

/dev/hda3 16G 4.5G 11G 31%/

If you have less than 400MB of free disk space in the/tmp directory, complete one of the following steps:

Delete unnecessary files in the/tmp directory to meet disk space requirements.

Set the TEMP and TMPDIR environment variables when configuring the Oracle User Environment (described later).

Expand the file system's/tmp directory. If necessary, contact your system administrator for information about expanding the file system.

To confirm the free disk space for the operating system, type the following command:

# df-h