8 Pre-installation

This chapter explains the pre-installation configuration requirements of the application.

ACS Client Specifications

This topic provides the specifications of Advanced Control Services (ACS).

Network

The minimum requirements of network bandwidth for acceptable normal response times are as follows:

Table 8-1 Network Requirements

Number of Users Minimum Requirements

1-5

512 KB

6-15

1 MB

16+

LAN connection (at least 25% available resource of 10 MB)

Memory

This table shows the minimum client resources required.

Table 8-2 Minimum Client Resources

RAM CPU
256 MB 80 MHz

This table shows the recommended client resources required.

Table 8-3 Recommended Client Resources

RAM CPU
256 MB 80 MHz

Response Times

This table shows typical response time.

Table 8-4 Response Times

GUI Action Response Time
Startup to Login dialog 30 seconds maximum
Login to SMS main screen 20 seconds maximum
SMS main screen to ACS 5 seconds maximum
ACS main screen to CPE 15 seconds maximum

Screen

Here is the required screen specification.

Table 8-5 Screen Specification

Pixel

800 x 600 pixel resolution

Preparing the System

It is recommended that you check the kernel parameters on the system to ensure the system is optimally configured.

The following parameters are described in their respective technical guides. However, they are collated here for reference.

Note:

Actual kernel parameters may be greater than those listed here.

Checking Kernel Parameters

Follow these steps to check the Kernel parameters.

  1. Log in as root.

  2. Enter cat /etc/system

  3. Check the parameters are set to at least the minimum values.

  4. Change the parameters as required using the following command from /etc/system.

Kernel Parameters

For Oracle 19c database the minimum values are the same except for project.max-shm-memory, which depends on the amount of physical RAM in the system. If RAM is in the range 1 GB to 16 GB, you should set the minimum value for project.max-shm-memory to half the size of the physical memory. If RAM is greater than 16 GB, you should set project.max-shm-memory to a value of at least 8 GB.

For Linux:

  1. Determine the sum of process parameters for all database instances on the system, the overhead for Oracle background processes, the system and other application requirements.

  2. Set semmns (total semaphores system-wide) to the larger of the value in 1 or 32000.

  3. Set semmsl (semaphores per set) to 250.

  4. Set semmni (total semaphore sets) to semmns/semmsl rounded up to the nearest multiple of 1024.

  5. For Linux and Oracle 19c, set the maximum number of asynchronous I/O requests allowed in /etc/sysctl.conf as follows:
    fs.aio-max-nr = 3145728
    After changing the /etc/sysctl.conf, run the following command as root to set the values in the system:
    # /sbin/sysctl -p /etc/sysctl.conf